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Hermes (NousResearch)

OpenChat / NousResearch / communityInternationalOpen sourceOpen weightsapache-2.0text

Community fine-tunes on top of open base models.

Release history (3)

  1. Hermes 4 (405B)
    Current stableCutting edgestableAug 26, 2025
    NousResearch/Hermes-4-405B405B params

    Reasoning-capable.

  2. Hermes 3 (405B)
    stableAug 15, 2024
    NousResearch/Hermes-3-Llama-3.1-405B405B params

    Hermes 3 on 405B.

  3. Hermes 2 Pro
    deprecatedMar 13, 2024
    NousResearch/Hermes-2-Pro-Llama-3-70B70B params

    Hermes 2.

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