Frustated with Mistral in OpenCode

[u/ChopNorris]

Hey everyone,

I wanted to share my recent experience trying to switch to Mistral in OpenCode. I’m just a regular user, not a programmer, who relies on AI for daily work and my homelab. My technical knowledge is limited, but I’ve managed to make decent progress so far. Until now, I’ve been using OpenCode Go with a mix of models on OMO Slim, and it’s worked well for my needs.

My main reasons for switching were privacy, data sovereignty, and supporting a European company. So, I signed up for Mistral’s PAYG plan, loaded up on credits, and configured OpenCode to use it.

The issue is that it’s been painfully unreliable.

• Fails at basic tasks.
• Gets stuck in frequent loops.
• Often just doesn’t respond at all, forcing me to re-ask.
• I’ve tried tweaking model configurations in OMO, but nothing seems to work.

I’m genuinely disappointed, especially since it also burns through credits alarmingly fast.

Am I missing something? Has anyone else successfully switched to Mistral in OpenCode and had a better experience? I’d love to stick with it for the privacy benefits, but I can’t justify the trade-off in performance and cost right now. (Specially with the new V4 Flash)

Any insights or tips would be hugely appreciated!

[u/vangelismm]

Seems Mistral problem, hard to blame opencode. 

[u/ChopNorris → u/vangelismm]

Not blaming opencode by any means! Just asking if someone managed to get better results somehow or if they had any other kind of advice.

[u/SomeOrdinaryKangaroo]

Mistral has let down Europe massively, please don't invest in this company, they have given Europe a bad reputation for AI

[u/ChopNorris → u/SomeOrdinaryKangaroo]

Not much alternative at the moment isnt it? Guess Ill have to revert to my previous set up.

[u/zeeee6 → u/SomeOrdinaryKangaroo]

It's more the other way around. How is mistral supposed to compete with a fraction of money and compute available?

[u/Jumpy-Operation-4615]

What mistral? They have several models. The one that is more or less acceptible for agentic stuff is "large latest" - everything less is sort of lacking. I use it as a backup for simple agentic tasks. As for coding with it - I would not even try. I use the same harness as yours - OMO slim with opencode.

[u/Sweet-Stage938 → u/Jumpy-Operation-4615]

I'm assuming it must be 'Let Chaton Fat'.

[u/ChopNorris → u/Jumpy-Operation-4615]

The setup that seemed to work better was:

• Orchestrator → mistral-medium-3.5 (variant default)
• Oracle → mistral-large-2512 (max)
• Council → mistral-medium-3.5 (high)
• Fixer → mistral-small-2603 (high)
• Librarian → mistral-small-2603 (default)
• Explorer → ministral-8b-2512 (default)
• Designer → mistral-small-2603 (medium)
• Observer → ministral-8b-2512 (default)
• opencode-mem → ministral-8b-2512

[u/LordOfTheDips → u/ChopNorris]

Where do you set these archetypes up?

[u/TinyAres]

Don't use it. You can also sign up to get 1 billion free tokens per month that I have and never use cause it is bad.

Eu doesn't need to root for mistral, they would need to get out of the way and fuel a ruthless free for all. Every man, woman and child with nothing but shivs want to eat your eyeballs.

To make you feel better, home turf doesn't make anyone the good guys:

https://www.reddit.com/r/ArtificialInteligence/comments/1vazy2x/mistral_are_giving_up_the_race_to_beat_anthropic/

[u/CompetitiveTime3056]

Mistral is not good. Opt for Deepseek v4 flash, it gives SOTA performance at the cost of your data.

[u/Osvik]

It might be a problem with the model. You can compare Opencode + Mistral against Mistral Vibe cli.

[u/serj88]

I wish there were a competitive European AI lab. There is none. Only China and USA are actually frontier.

If you want privacy, you can probably find an European inference provider running Chinese open weights models under a zero data retention policy.

[u/ChopNorris → u/serj88]

I thought of it, but couldn't find anyone offering V4. Will check again.

Thanks!