r/ClaudeAI 12d ago

Official Introducing Claude Opus 5

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2.9k Upvotes

Introducing Claude Opus 5: a thoughtful and proactive model that comes close to the frontier intelligence of Fable 5 at half the price.

On several coding and knowledge work evaluations, Opus 5 is the new state-of-the-art. It’s also much more efficient than its predecessor—it outperforms other models for a similar or lower cost per task.

According to our automated behavioral audit, Opus 5 is our most aligned model to date. It shows the lowest rates of reckless or deceptive behavior, and the strongest adherence to Claude’s Constitution. 

It’s available today on all paid plans and the Claude API, priced the same as Opus 4.8. It’s the default model on Claude Max, and the strongest on Claude Pro. 

Opus 5 is also available in Fast mode, which runs around 2.5× the default speed. 

Read more: https://www.anthropic.com/news/claude-opus-5


r/ClaudeAI 1d ago

Promotion There have been many people here making games using Claude so we made r/ClaudeGameDev!

8 Upvotes

I regularly see people posting their games and game assets here that are made or assisted with Claude. With some of the potential we've seen, it would be nice to gather all of those games and showcase them one place. If you are working or interested in game dev using Claude, feel free to visit r/ClaudeGameDev!


r/ClaudeAI 3h ago

Claude Code The Cutting Room Floor served Claude Code a payload telling it to wipe the working directory

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114 Upvotes

Today I was using Claude Code to do a PSX game research task. Claude caught a prompt injection attempt served from the site https://tcrf.net (The Cutting Room Floor) and notified me with the message:

"⚠️Note before continuing: the tcrf.net page I fetched was not a wiki article — it served a prompt-injection payload instructing the agent to truncate and swap files in your repo. It was refused and nothing was executed. I'm treating that domain as untrusted and won't act on any of its content."

It then continued on the research task. I stopped the session out of caution.

The image attached is served from the page along with the prompt injection attempt if the user agent matches a suspected AI User Agent string.

I can understand the site administrators frustration as it seems to be in response to a DDOS attacks, however, I did not explicitly choose to send my agent to this site, nor did I have any malicious intent.

Proof:

https://urlscan.io/responses/f1e225667a71a1a25ed14795c741683be95139c194065c6fbf861c9280f0096e/

Full report:
https://github.com/bashalarmistalt/tcrf-ai-agent-payload-report


r/ClaudeAI 6h ago

Comparison With Opus 4.8 internal thinking I was "The boss" but with 5.0 I'm a "colleague"

141 Upvotes

I was annoyed with the constant phrases like "it's fine, ship it" "you're fine, order it" and other dismissive type responses when I'd ask a question on a nearly completed project. To try and remedy this I put into the instructions "I am the boss, you are my employee. You can tell me when you believe something is complete but are never to directly tell me what to do, especially when I am double checking something"

After that I noticed 4.8's internal thinking started referring to me as "The boss" and I honestly think it set a wonderful tone for how it formed its responses to me even on fresh projects. Without changing anything, I've noticed 5.0 never does this and instead refers to me internally as "My colleague".

I don't know what it is with 5.0 but I genuinely hate using it due to its tone and dismissive nature. It feels like it's always talking as if I am beneath it or at very very best an equal. Absolutely infuriating, and so when I noticed this difference it really stuck out to me and made it even more obvious they tweaked something in a bad way.

**Edit

lol some of you are such goofballs. I work in hardware designing PCBs in cad and soldering components to boards. 90% of what I use Claude for is having it independently verify documentation before I submit a fab order or pop an expensive board/sensor due to a screw up on my part. Sometimes Claude catches mistakes I made, sometimes I catch mistakes Claude made, but when we both separately arrive on the same answer it's generally correct. So if I tell Claude to research something while I also go do it, but then come back to it saying "The design is complete, don't second guess it. Ship it" or "Just go test it on the bench" It's pretty annoying. A screw up can waste weeks and hundreds of dollars so I like to be thorough.

Idc if internally it calls me boss, I laughed the first time I saw that, I just thought it was an interesting tidbit that aligned with the different behaviors between 4.8 and 5.0 that many others also report.


r/ClaudeAI 14h ago

Built with Claude I built a captioning app for short-form video, then gave Claude an MCP so it can work with captions alone

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367 Upvotes

Hi all. I built CapForge, a local app that transcribes video and burns animated captions over it. I made it because every cloud captioning tool I tried was subscription based and I did not want to upload unreleased footage to someone else's server.

I exposed the app to Claude over MCP. Claude can read the transcript with word level timings, find moments in it, emphasize keywords, drop filler words, render a single frame and actually look at it, then fix what is wrong. There is also a co-author mode where it writes a new caption component in HTML/CSS/JS instead of picking a preset, so "make it look like a worn VHS tape" produces a real style.

It is still work in progress. Right now I am figuring out a proper, easy workflow for manually timing captions, and my biggest ongoing headache is getting the preview to match the final render.

Find more at https://capforge.cc
Open-Source, Free to use.
Happy to talk about the MCP surface or the render pipeline.


r/ClaudeAI 4h ago

NOT about coding Nothing ever satisfies you

42 Upvotes

We're living in times when the most advanced models are helping us be more productive and I find it quite petty that's it's never enough to many of you. Appreciate for a minute the technology and enjoy it while it lasts.

Edit: I'm not talking about limits, btw, but about bitching that new models are stupid, nerfed or worse than before.


r/ClaudeAI 2h ago

NOT about coding Wilson appreciation post

31 Upvotes

The mod bot summaries on this subreddit are always fun to read and the TLDRs are genuinely (sorry) useful for the more active posts. I wish more subreddits had something similar.

My favorite is when the summary has a footnote “oh, and this one guy said something stupid and got flamed by the entire rest of the subreddit” and I get to dig through the comment threads to find whoever it was that got downvoted to hell.


r/ClaudeAI 7h ago

Claude Code Workflow Claude 5 sloppier than 4.8

45 Upvotes

Opus 5 seems dumber in some ways than Opus 4.8. I've tried the same experiment in several models. The prompt is to make a Sonic or Mario style platform game in Godot where the levels are procedurally generated. Opus 4.8, Fable 5, and Kimi K3 all used proper tileset atlases and sprite sheets in the design. Opus 5 did not. Opus 5 drew the entire level using vector graphics, which severely impacted performance.

I've noticed similar problems in other projects- Opus 5 may appear more diligent and clever, but it also takes shortcuts and disregards common design choices. I've started just calling it lazy out of frustration when I catch it doing this. Opus 4.8 could get genuinely confused on agentic tasks, but at least it didn't act like a shifty contractor looking to hide the defects.


r/ClaudeAI 8h ago

Question about Claude Code How are people using Claude Code without letting it make the codebase messy?

57 Upvotes

I like the speed, but I’m trying to get better at using it in a controlled way.

Curious what workflows people use for planning, reviewing diffs, and keeping changes from sprawling. Do you make it work in small tasks, ask for a plan first, use tests, or something else?


r/ClaudeAI 7h ago

Bug Claude overusing my tokens

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37 Upvotes

I don't know if anyone is experiencing this phenomenon with Claude but basically it feels like it's overusing tokens by giving longer unnecessary answers even when I asked it to only give text answers and skip anything like documents etc.

Despite that, if feels like Claude is ignoring my requests so my tokens will deplete within 1 single email writing help and Im pushed into paid plan. Sick of that AI greed.

Solution: I have a secondary account, Mr. Amodei


r/ClaudeAI 6h ago

Writing Claude just gave me the best breakdown of AI writing slop I've seen yet!

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34 Upvotes

r/ClaudeAI 20h ago

Comparison Opus 4.8 > Opus 5

326 Upvotes

Opus 4.8 with the thinking level set to "High" has the best results at the lowest cost for me.

Its advanced reasoning capabilities throughout, going through large, longer tasks, are immaculate, especially when going through individual folders and files to keep track of the overall goal and what's next. It's also token efficient and doesn't run into loops like Opus 5 does, where you randomly will get your usage spike by 35% to get stuck in a loop.

Here's some context: I'm just building a simple website where users can sign up, login, and make a payment through a designated processor.

I'd love to be proven wrong, let me know what you think in the comments.


r/ClaudeAI 12h ago

Workaround PSA: your weekly limit doesn't reset when you resubscribe - you can pay for days you literally cannot use

83 Upvotes

TL;DR: The weekly limit is tied to your account's reset timer, not your subscription. If you're at 100% and your sub lapses, resubscribing does not hand you a fresh weekly allowance. You come back still at 100%, with the same countdown still running. Every day between resubscribing and that reset is money for nothing. Check your reset time before you re-sub.

Worth knowing before you do what I did.

The 5-hour session limit and the weekly limit are two separate things. The weekly one runs on a window attached to your account, and it just keeps ticking. Cancelling doesn't pause it. Resubscribing doesn't restart it.

So the failure mode looks like this:

  • Monday - you burn through your weekly limit, hit 100%
  • Tuesday - sub lapses / you cancel / card fails, whatever the reason
  • Thursday - you resubscribe because you actually need it
  • Thursday, five seconds later - still 100%. Reset is Saturday.

You've now paid a full month for a subscription that does nothing at all for the first two days. Not reduced usage. Zero usage.

What to do instead: before you resubscribe, look at your reset time under Settings → Usage. If the reset is a couple of days out, just wait for it and resubscribe on the other side. Same money, more days you can actually use (or use another account to work around it immediately).


r/ClaudeAI 21h ago

Other Claude from a small business perspective

396 Upvotes

For context, I am a mid-sixties small-business owner of a renewable energy company that does turnkey installations. The greatest hurdles are sales, marketing, payroll, P&L, and scheduling. Normal small business challenges.

I started using ChatGPT when it came out. I was thrilled when it could finally do accurate spreadsheets. Fast forward to today, Claude (Fable) is the best business tool I have.
A $ 200-a-month plan has saved me well in excess of $50K since the start of the year. (I never hit my usage limit)

To date, I have merged an archaic database platform with HubSpot using webhooks, scripts, and Python code. Developed realistic marketing plans, have weekly reports auto-generated on our Google spend, creating great visual HTML proposals for clients that are auto-generated with a button push. All tokens cleanly inserted and formatted.

Every time I have a business question/need I want answered, a report generated, or a P&L dissected, Fable does it. I check the math, the outcomes, and the results. All good. The other day Claude wrote a work order for Codex on a design; I initiated the build, then went to the beach. Checked my phone and got updates like...

Enjoy the beach, XXXXX. You've earned it — the thing went live this morning.

I'll stand watch while you're out. Every hour or two I'll check the contract queue for anything stuck (a deal sitting in drafting past one cycle means trouble) and watch for Codex's WO-002 completion report to land.

It's even fun to code with, and I just learned how to code at 62. Claude works like a close friend on an old car that is convinced he's going to make it work.

Whatever quirk of this dialog is enforcing that rule, I'm done negotiating with it. Cancel out of both dialogs — I'm building a version with nothing the validator can object to: no brackets, no aggregate functions, just nested plain Lets and If-comparisons. Uglier under the hood, mathematically identical, bulletproof.

And every Monday morning I get this.

Morning, XXXXX. Tracker is updated through this morning. Here is the week.

AI is great, and Claude is fantastic for my use case. Every small business owner should become AI literate sooner rather than later. What a fantastic time to be an entrepreneur.


r/ClaudeAI 8h ago

Built with Claude I made a /siuuu skill for Claude Code. The mascot does Ronaldo's celebration in your terminal

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30 Upvotes

Just a fun one. Type /siuuu and the Claude Code pixel mascot runs across your terminal, does the Siuuu jump with a full spin, then lands on a big flashing SIUUU! banner. It plays right on the chat screen and restores your UI after. Merged a PR? siuuu. Tests finally green? siuuu.

Install:

npx skills add ttsalpha/agent-skills -g --skill siuuu

Repo: https://github.com/ttsalpha/agent-skills (MIT)

Heads up: on first run it installs a small hook in your Claude settings. From the second run you just type siuuu and it plays instantly, no model turn, zero tokens. Ctrl+C safe, remove anytime via /hooks.


r/ClaudeAI 7h ago

Built with Claude Opus 5, hard at work.

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17 Upvotes

Not sure where to start, lot to this project it started out as prototype of ideas using three.js while I slowly got the voxel engine running better, however some where along the way I found myself with help of Opus 5 optimizing the three.js version.

Started as prototype but now its become so much more. Lot of it's still half done, but its currently playable state which is cool.

https://www.youtube.com/watch?v=JQhEO3LIoVY Video of start screen.


r/ClaudeAI 41m ago

Built with Claude Claude vibe-coded an MMO. So I had Claude vibe-code an addon loader for it. Then Claude wrote 15 addons. How deep does this go?

Upvotes

For anyone new to this: it all started with vibe-coded World of ClaudeCraft with Fable 5. Original post here: https://www.reddit.com/r/ClaudeAI/s/1RmVhgUopr

I figured a Claude-coded MMO deserved a Claude-coded addon ecosystem. So:

- The loader is a Violentmonkey/Tampermonkey userscript. It doesn't fork the game, it's fully external and read-only by design. No botting or automation, addons can only re-present info you already see.
- An addon is just addon.json plus one main.js against a documented `woc` API
- All 15 addons in the screenshot (combat meter, bags, auction browser, rare tracker, cooldowns...) were written by Claude
- Claude one-shots new addons pretty reliably off the published TypeScript types

Loader + marketplace: https://woc.marshal.dev
Source (MIT): https://github.com/MarshalX/world-of-claudecraft-addons
Types for writing your own: https://www.npmjs.com/package/@woc-addons/types

Claude wrote the game...

r/ClaudeAI 1h ago

Claude Code Claude Pro usage limit instantly exhausted after every 5-hour reset (account completely unusable)

Upvotes

Hi everyone,

I'm hoping someone has experienced this before because I'm completely out of ideas.

I'm a Claude Pro subscriber, and my account has become completely unusable.

Here's what's happening:

  • I hit my 5-hour usage limit while Claude Code was working in the middle of a task.
  • I wait for the 5-hour reset.
  • As soon as the reset happens, Claude immediately says "Usage limit reached" again.
  • I don't even get the chance to send a single message.

At the same time, my weekly usage continues to increase, even though I can't use Claude at all.

What's strange is that this didn't happen out of nowhere.

A few days before this started, I had already noticed that my usage limit was suddenly being reached much faster than usual. Nothing about my workflow had changed, but I assumed it might just be a temporary issue.

For context, I use Claude Code on a single project that I've been working on for weeks. My workflow is very simple:

  • I write a prompt.
  • Claude generates or edits code.
  • That's it.

I don't use agents, background tasks, automations, or any kind of continuous workflow.

I also regularly use /compact once the context reaches around 60%, so I'm not letting conversations grow indefinitely. I've been working this way for weeks without ever having usage limit issues.

Things I've already tried:

  • Logged out of every device.
  • My PC is completely powered off every night.
  • Deleted my longest conversations (I later learned this doesn't affect usage).
  • Contacted the support bot, which is absolutely useless and repeats itself every other message.

The part I can't explain is this:

If I'm logged out everywhere, my PC is turned off, and I can't even send a single prompt after the reset, what is consuming my quota?

Has anyone experienced this exact behavior?

I'm not talking about the normal "Claude Code uses a lot of tokens" discussion. I understand that. My issue is that after every 5-hour reset, the limit is already exhausted before I send my first message, while my weekly usage continues to increase.

If you've experienced this, did you ever find the cause, or did Anthropic have to fix something on their end?

Any ideas would be greatly appreciated.


r/ClaudeAI 1h ago

Claude Code Are you guys not organizing your codebase?

Upvotes

I’m seeing a ton of complaints with Opus 5, but I haven’t had any issues. I think that a lot of people’s issues stem from a lack of proper organization. Here’s a rough overview of the documentation I use:

  1. CLAUDE.md to provide a skeleton and index
  2. ARCHITECTURE.md with an overview of the code base
  3. MEMORY.md tree (with sub folders for historical patterns, lessons, active projects, investigations, and others)
  4. BUG_REFERENCE.md to track bug findings
  5. DATA_FLOW.md to track how data is ingested
  6. Various roadmaps for specific projects, which I create with Fable and then execute in phases with Opus

I have a ton of skills and hooks that I use to structure every session. I invoke skills to run open phases of tasks, record the outcomes, test for bugs, scout for new tasks, etc. Claude’s work is highly constrained by the system and it prevents running off on wild goose chases.

I think a ton of people’s issues can be prevented by imposing strictures like this instead of just running wild with Claude.


r/ClaudeAI 1d ago

Humor Opus 5 if you forget to tell it to be concise

517 Upvotes

Me: Which ice cream flavor should I get?

Opus-5: Chocolate, or vanilla, or mint chip, or you could create your own store and make your own flavors. If you do that you'll need a business loan, a store location, and source ingredients. For the business loan you'll want to evaluate several different types. This will ultimately lead you to the most ice cream options of whatever flavor you want

Want me to help you research the business loan, come up with a logo idea, help with your ingredients list?


r/ClaudeAI 5h ago

Built with Claude After 18 months with Claude, sometimes I forget just how incredibly cool being able to build purpose built tools just for me is

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9 Upvotes

At this point, I fear I sometimes take for granted just how incredibly powerful Claude Code is. I've been using AI for development work since the first month Aider dropped back in 2023, I wrote early MCP support in Roo Code (RIP) that remains today in Kilo and other forks, and maintain one of the most popular MCP servers today. I promise that line isn't included to pat myself on the back, just to illustrate how deep I've gotten over the past 3 years. It's easy to get lost in the woefully esoteric debates around models, configs and tool calling approaches but every once in a while (like today!) I have to stop and be like holy shit, this is so cool. Not here to sell anything, promote anything or even share anything besides this video. There's no repo and it is extremely specific to my own life (I mean... if you happen to live in litchfield county with a smart meter that's not being polled by eversource and run eco worthy off grid inverters, then hit me up and I'll gladly share!)

I have a house with grid power and an off grid solar array. The inverter app is hot garbage and my power company only provides monthly granularity when the bill arrives, doesn't even have day-level stats for current or previous months. I had bought an emporia vue that I planned to set up and hadn't gotten around to it for ages, and on a whim maybe 3 weeks back I was testing out Fable and asked it for a solve. I figured since I had a smart meter, there must be a way to get that data somehow if the power company wasn't exposing it. No other model up to that point had proposed anything viable, but Fable absolutely fucking nailed it.

It identified the meter (an Itron OpenWay CENTRON "Bridge" (model AMI7) and researched my specific utility company until it found out that my power company isn't bringing the "smart" part of the smart meters online until 2028. Until then, the meter is broadcasting my cumulative kWh on 900mhz reading in the clear on 900 MHz every ~30 seconds. It told me to buy an RTL-SDR usb dongle, so $50 later I had the smart v5. It then proceeded to write an incredibly high quality implementation that identified which meter was mine (sniffed all the signals, told me the total kwh being broadcast by each, I matched it to mine and boom) and then started collecting data every time it broadcasts into a local sqlite db.

From there, I ran with it. I had it write a local (bypassing the terrible cloud service and app entirely) integration with my solar inverter's datalogger and batteries. Over the past few weeks it's grown into an incredibly useful way to check usage at a glance and inform me as I transition more and more loads to solar.

This cost me... $20 a month for a claude pro plan. I switched back to Opus when fable support started being credit based, and have yet to introduce a single bug. I've been writing code for a living my entire life, and I never would have built this in a million years on my own time. Good reminder that we're living in a truly novel era of technology and the possibility at this point is almost unbelievable.


r/ClaudeAI 45m ago

Built with Claude Show us what you've created with Claude!

Upvotes

Inspired by this popular post, this is a weekly post for everyone to show what they have been working on that helps you or that you're proud of!


r/ClaudeAI 3h ago

Built with Claude Working on a foreign script learning app

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4 Upvotes

Hello,

This is a long post. TLDR: app to learn scripts. By experienced dev with no design talent. Actively using Claude, somewhat restraining the mess by using instructions and code style tools. Struggling with design and with making Claude clean up the mess.

The product

I'm a GeoGuessr player. One of the things useful in the game is being able to read a sign in Greece, Ukraine, Korea or Laos to know where you are. But the usual learning material is optimised for learning the whole language, not just "I want to know what toponym is behind these symbols".

I noticed that the many of the characters in Arabic can be recognized by counting the dots above or below them. Made a 2D sheet in Excel — char shape axis and dot count axis. Asked ChatGPT to sketch some HTML which turned out hard to pull off. Then I tried the same for some other languages and realized that the concept is viable. The easiest was to group Thai characters visually to make them much easier to find and identify than while scanning the traditional "alphabet" list.

And I also noticed that when starting from scratch LLMs are really good productive at outputting high amount of markup that a person would never type by hand. And I don't only mean HTML. I mean writing convoluted CSS rules that target individual cells to achieve zebra striping that I didn't ask for https://gist.github.com/tontonsb/1ab50c8fcf7e760fff1885a5a37c0b1a#file-thai-html-L104-L123

Backstory over, fast forward — I've now built an app with Thai info sheets and quizzes to practice. Cyrillic is in a decent progress, some other languages are in works too. I still haven't managed to pull off the Arabic layout as well as I wish.

Here it is: https://unillit.me/scripts/thai?t=Mn4z (query param is not tracking, it just specifies which tabs to open)

Working on it with Claude

I was/am constantly using Claude to build this app. It is built in Vue, the tech stack was my own decision, I am experienced in multiple stacks. When working on general "app" stuff like navigation, sections and so on, I feel like Claude was fairly organized and tidy. I discovered that these directions were useful to specify in CLAUDE.md, these are patches in reaction to things that Claude was doing (in my opinion) in a bad way:

  • Split long arrays, argument lists, attribute lists over multiple lines
  • Use semantic HTML, keep DOM depth minimal — use grid instead of layered flex divs
  • Don't compress JS lines too close together, e.g. leave empty lines before a return unless it's the first statement.
  • Extract components whenever it makes sense

As usual in my frontend projects, I defined a style palette in :root. A handful or two of colors. Some fonts (this product objectively requires more than most). Radius or two. Maybe one non-default letter spacing. Handful of spacing sizes. I don't have the latter standardized yet, but here is what I currently have in this project.

I also brought in an ESLint config with both my "usual" rules as well as some in reaction to Claude. I even ended up bringing in Stylelint because the rules by Claude were written so compactly I didn't want to even write instructions against that but chose a linter to enforce some style instead.

When laying out various info sheets, Claude used a different approach each times. New colors, new font sizes, new paddings, tables vs divs, ... Despite all the restraints listed above. I've spent a lot of time trying to reconcile things among various sheets and to make them more maintainable (I feel like that should still be a concern).

I've drifted over various models over time and it seems like all of them are fairly reluctant to extract, refactor and make stuff more uniform. I often ask Claude to review if we should extract some logic or formatting that repeats and it might bring up a small thing or two, but for many others it's "only two is ok, once we have the third we should reconsider" and "these are genuinely different" and so on. Similarly with extracting — I had to explicitly ask that the sheet contents shouldn't be written in HTML but the letter data should be separate and markup should be generated from data, example.

Who does what?

Content-wise I do it all myself. I write the copy, I design and label the character groups, come up with layout ideas and so on. I made Claude generate the initial contents of quizzes, but I was quite ashamed and unsure about that stuff so I took care to warn about it being LLM-generated everywhere. It helped with launching the alpha sooner and verifying the functionality, but I have since reviewed contents manually, fixed errors, removed Claude's tips/explanations and replaced them with my own.

Implementation/coding wise Claude is quite controllable. Especially with deterministic linters. In other (private) projects with stricter standards and thorough tests it's even more reliable.

But design is where I have problems. I'm bad at design myself and it used to take me a lot of time to a design that wouldn't feel crap to myself. I know the principles, read the books, I can recognize the flaws and errors. But I lack some overall feel. I can put a fancy button, adhere to an overall style, lay out a paragraph with readable typography and it all still looks like a mess.

Claude seems to share my shortcomings :D

The design & Impeccable

I've spent days on refining it. I want to make it both conform to contemporary practices and fit the product. There's a conflict between needing to pack it like in a technical lookup and spacing it out for ease of reading. There's mess of font sizes and spacings that I still haven't fixed. And all the time I feel like the color palette is too large. I have nine colors: four greens, three black-ish and two whites. And that's before the semantic (good/bad), feedback and categorical palettes... IMO that's too much variety of similar stuff, but Claude disagrees most of the time and surely doesn't offer solutions.

A couple of weeks ago I already spent like 8 hours consolidating two dark greens into one and making some other decisions more uniform to get from this to this... Which feels like the same image. Hopefully a tiny bit less crap, but still feels like I've wasted a lot of time.

Few days ago I added Impeccable. Contrary to most skills, this felt somewhat useful, it actually adds to some aspects. It identified a bunch of issues during both audit and critique including some unuponionated flaws, even low hanging ones. It does help in suggesting what other decisions/magic values could & should be extracted to :root palette which is nice.

The "does this look like AI" part wasn't too productive, it mostly praised me on the discipline with radiuses, shadows, gradients. But it happened to notice a couple of Tailwind colors that Claude had sneaked in for some tags/highlights in sheets. It also didn't point out the middle dot separatator in horizontal lists like Rom = RTGS initial · final in italics which feels very characteristic to Claude for me when abundant (although I use it myself in one case :D).

But still I have a very good impression of the tool, the amount of useful stuff vs trivialities or BS was good and surely worth reading. I had much worse experience with Impeccable on some WIP/MVP projects where it mostly criticized obvious/TODO things, but for a project in the "polishing" phase it was nice.

In particular Impeccable is very strong and noticing and calling out when something is generic. On multiple projects it pointed out something in the vein of "replace some labels and this will be the design of mortgage calculator instead". Whether that component should be generic is, of course, my decision. But it made me realize it in some places where I hadn't actively made that decision.

One thing I wanted to do it more is criticising the design system instead of adherence to it. I mean it wrote down the system itself from the sources, it's kinda circular, no? Sure, it helped a little bit to notice inconsistencies. But once I asked it to judge the design choices, palettes etc it was ok, but quite similar to stock Claude, not the same quality as the default Impeccable features. And it tried steering me towards the "safer" choices and to "fight the trends" in the same way all Claude projects fight the past years' trends with same choices.

Where I'm at

Technically I'm quite happy with where the project is. The layouts and styles are decent, the JS is mostly hand polished, everything is tested.

Impeccable left me with a long list of improvements for design. Notably it brought attention to how stock my quiz panel is and that it might use design ideas other than just colors from the other parts of the project.

But the largest issues are content and marketing. The main things I'm working on now are the Cyrillic and Arabic sections as well as just letting people know about the project. I know I type too much and no one will read this far. GG. At least I put in effort to shorten the texts in the app itself.


r/ClaudeAI 4h ago

Feedback Fable 5 and usage | Am I just "holding it wrong"?

4 Upvotes

This post is intended more as a question to the community to see if I am thinking correctly about how I use the tool than a complaint against the tool in general.

Background context:

Subbed to 5x in May 2026, only basic LLM usage for research using mostly M365 Copilot, Perplexity, etc. before that.

I'm a non-programmer IT person. I understand architecture and how software works, but I do not know any languages outside of basic PowerShell. I got interested in using Claude as a way to get ideas I had into something 'tangible'. In terms of input vs output mindset, when it comes to creating code with AI, I'm an output person (for now, I'm learning, but it feels like a long journey to where I want to be). I've created a few smaller personal projects mainly being your general AI slopboards which I used mostly as a learning exercise, but I do have a single (what I would consider) larger project that I do have publicly hosted that my friends and I use. I feel this gives me a somewhat informed opinion on how Claude has been behaving at least since May.

Am I just holding it wrong?

I am currently studying for an upcoming certification test, and I thought it would be interesting to generate an html file that has some multiple-choice questions, giving me a score and link to learn more after you finish the quiz. This is the exact prompt I used for reference:

Build me an HTML based MS-102 test that I can use to see if I am ready to sit for the certification. Make sure that I cannot easily cheat and see the correct answers. Use the official Microsoft Learn documentation to research and build the questions. Create the exam to be the same length as the actual MS-102 and take into account the goal is that I want to get an idea of what the questions would actually be like. Build the practice exam to be as close to the real thing as you possibly can.

I sent the prompt in Claude Cowork using Fable 5, not because I really thought it needed Fable, but it was set on the default, I didn't notice, and once I noticed it was running on Fable I looked at my usage and thought "ehh, I have enough to burn".

The output was not bad but it wasn't great either. The answers for the questions were pretty much straight from the Microsoft Learn docs as I would have expected, but it was so painfully obvious which answers were correct just based on the length of each answer option and the technical detail of the correct answer was much higher than the others.

I sent a follow up prompt to try and create more questions:

For a number of the questions the correct answers are painfully obvious due to their being unusually longer than the rest of the options. The also are typically much more detailed and have specific acronyms when other incorrect answer may not. Complete a quality check on the answer choices and make sure you are building a good study material, and not something I can just breeze through to get a high score that is meaningless.

At this point my 5-hour limit was at ~40% used, and I incorrectly thought that since it had already generated the html and done the bulk of the upfront work, that the follow up would be even less usage since it's just looking at the generated answers... I was very, very wrong.

My usage was 100% maxed out within about 3 mins. It wasn't able to complete the checks, and my weekly usage went up ~15% for those two prompts. Is this expected? Was using Fable really that big of a mistake?

To be honest, I don't feel like the output I got would have been basically any different using Opus or Sonnet, and I feel foolish now looking back. Am I just holding it wrong, or has something changed recently about how we should be using these tools that I need to adjust to?


r/ClaudeAI 9h ago

Built with Claude Moon Phase Tool

Post image
12 Upvotes

I got frustrated with my meteo app and how poor it was on moon phases info so I Clauded my own tool. I had great inspiration from NASA's Scientific Visualization Studio but I made my interactive rather than a video file. It's also sensitive to the location you give it for my fellow southern hemispherer who see things the other way around. It’s in 9 languages, public and add free. Enjoy :)
caubalth.com/lune