TLDRocket
6 October 2026
Open-weight AI is back in the spotlight, and not just for performance charts. Mistral released Mistral Large 4 (ML4), a 1 trillion-parameter natively multimodal model with 49 billion active parameters, pitching it as Europe’s answer to the closed-heavy frontier stack. In a preview, Mistral priced access at $1.36 per million input tokens and $4.18 per million output tokens, with weights still scheduled for late October. That timing matters for the bigger argument in today’s discourse: the U.S. and Western debate over open-weight cyber risk is drifting, critics say, toward categorical bans instead of ecosystem trade-offs—like whether limiting open weights also implies constraining frontier closed-model API access.
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