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Kimi K3.1 Pro Highspeed

Moonshot AI · 2026-10-24

Kimi K3.1 Pro Highspeed is the high-speed variant of Kimi K3.1 Pro that Moonshot AI released alongside it on October 24, 2026, served through Kimi.com, Kimi Work, Kimi Code and the Kimi API as kimi-k3.1-pro-highspeed. Moonshot says it delivers 2-3x the speed of K3.1 Pro and lists it with its own model ID and price, but doesn't say whether it is the same served model, so Atlas keeps it apart rather than assume a faster tier is the base model. Its context window, modalities and reasoning controls follow Moonshot's K3.1 Pro documentation, which doesn't state them separately for this variant.

Launch post · Model card

Benchmark scores

BenchmarkScoreSource
FrontierPhysics v0.16.5FrontierPhysics v0.1 leaderboard: Kimi K3.1 Pro (Claude Code, max) · BenchFlow
FrontierPhysics v0.1 Pass@312.5FrontierPhysics v0.1 leaderboard: Kimi K3.1 Pro (Claude Code, max) · BenchFlow
FrontierPhysics v0.1 Score6.1FrontierPhysics v0.1 leaderboard: Kimi K3.1 Pro (Claude Code, max) · BenchFlow
FrontierPhysics v0.1 Verifier Pass16.1FrontierPhysics v0.1 leaderboard: Kimi K3.1 Pro (Claude Code, max) · BenchFlow
TaxCalcBench TY2526.0TaxCalcBench official leaderboard · Column Tax
TaxCalcBench TY25 (web search)66.0TaxCalcBench official leaderboard · Column Tax
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