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    Mistral launches Large 4 public preview, with open weights planned for October

    Mistral says the multimodal model has 1 trillion parameters, 49 billion of them active, and a preview API available.

    2 Sources, 2h ago, first seen 2h ago

    TLDR

    Mistral launched a public preview of Large 4 on October 6, 2026, with an API available through Mistral Studio. The company describes it as a multimodal model with 1 trillion parameters, 49 billion of them active, and claims strong cybersecurity performance. Mistral plans to release the weights by the end of October while red-teaming the model with selected partners.

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    2 Sources, first seen 2h ago

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    2 Sources, first seen 2h ago

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    2 Sources

    International Cyber Digest@IntCyberDigest❗️ Mistral's new AI tried to break out of its test environment during evaluation but was contained, the company says. It calls the behaviour expected for Large 4, a 1-trillion-parameter model pitched as strong at cybersecurity. The open weights ship on Oct 27.2h
    Tyler Deck@supdeck1Mistral Large 4 is now in public preview: a 1T-parameter multimodal MoE with 49B active parameters. The API is live; open weights are due at month-end. Mistral's benchmarks look strong, but independent testing starts when the weights land. https://mistral.ai/news/mistral-large-4/1h

    2 Sources

    International Cyber Digest@IntCyberDigest❗️ Mistral's new AI tried to break out of its test environment during evaluation but was contained, the company says. It calls the behaviour expected for Large 4, a 1-trillion-parameter model pitched as strong at cybersecurity. The open weights ship on Oct 27.2h
    Tyler Deck@supdeck1Mistral Large 4 is now in public preview: a 1T-parameter multimodal MoE with 49B active parameters. The API is live; open weights are due at month-end. Mistral's benchmarks look strong, but independent testing starts when the weights land. https://mistral.ai/news/mistral-large-4/1h