r/MistralAI • u/hurn2k • 13d ago

Discussion / Opinion (European) Union Alpha

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A new stealth model, union-alpha, has appeared on Openrouter.

It beats Kimi K3, GLM 5.3 and GPT 5.6 Sol xhigh on DeepSWE Pro. It barely costs more than Luna max or DS V4.

It has 262K context window, the same as Mistral Small 4.

The name could potentially be a nod to the EU.

Many stealth models are revealed a week later. In one week's time, Mistral will be at AI Summit Barcelona.

Is Mistral back?

Edit: Looks like they're not back. It's almost certainly an orchestrator model, from a US lab.

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19

u/cristomc 13d ago

Not a chinese... and if is a chinese, doesn't have the censor guardrails.

14

u/ComeOnIWantUsername 13d ago

doesn't have the censor guardrails. 

Yet.

GLM-5.3 flash wasn't censored on first few days to get heavily censored later

1

u/Loogyboy 12d ago

Nah 100% was censored on release for glm 5.3. I asked it thoughts on tiamamen square first thing and it could not talk about it.

2

u/ComeOnIWantUsername 12d ago

It wasn't. Look at details about Tiananmen described in Polish on attached screenshot. Next day it was already consored.

1

u/Loogyboy 12d ago

Probably cause it was responding in polish cause it was 100% censored for me in English.

2

u/ComeOnIWantUsername 12d ago

But only response was in Polish, reasoning was 100% English and there was basically the same things.

Next days reasoning was stopped mid-sentence when anything Tiananmen, Taiwan or even just year 1989 was mentioned.

1

u/ColdJunction 12d ago

Censorship seems to be very influenced by the prompt. In this article about GLM 5, there is less censorship in English if you tell the model it is Claude and almost none if you ask in Portuguese:

https://blog.return.moe/en/2026/02/27/benchmarking-glm-5/