Moonshotai
Kimi K2 0905 is the September update of Kimi K2 0711. It is a large-scale Mixture-of-Experts (MoE) language model developed by Moonshot AI, featuring 1 trillion total parameters with 32 billion active per forward pass. It supports long-context inference up to 256k tokens, extended from the previous 128k.
25.3
Quality Score
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Arena ELO
256.0K
Parameters
262K
Context
Use this section to answer one simple question first: how much outside evidence do we have that this model performs well? Structured benchmark scores appear first, then official provider evidence, then live arena signal.
This model has normalized benchmark rows, so scores here are directly comparable across benchmark sources.
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Sep 2025
Released
These are recent benchmark or leaderboard claims from official provider sources. They are useful for freshness and context, but they are not treated the same as normalized independent benchmark rows.
kimi-k2-0905-preview - SWE-Bench Verified
SWE-Bench Verified resolved rate 71.2
View sourcekimi-k2-0905-preview - SWE-Bench Verified
SWE-Bench Verified resolved rate 71.2
View source