Moonshot AI· 2 days agoKimi K3.1 ProMoonshot releases a 1M-token open-weight model with a faster versionStory of the week · 19–25 OctMost coveredNew modelYour browser cannot play this video.Nathan Lambert: “Podcast: Kimi K3.1 Pro, the new cyber reality, and Muse musings”+18 more →Ask your AIReporting · 19 outletsMoonshot AI· 24 OctKimi K3.1 Pro
ArenaEvaluationKimi K3.1 Pro (Max) lands at #11 in Arena's Agent ArenaKimi K3.1 Pro (Max) by @Kimi_Moonshot just landed in the Agent Arena at #11 with +7.6% net improvement across +4K real-world agentic sessions from our global community of users.Kimi K3.1 Pro (Max) would be the new #1 open model in the Agent Arena overtaking DeepSeek-v4.1-Flash! Open weights coming soon, stay tuned.Kimi K3.1 Pro (Max) is a +6 percentage pt improvement over Kimi K3 (Max) at +1.6% (#25 -> #11). And with a $1.03 median cost per task in Agent Arena, Kimi K3.1 Pro is 13% less than its previous variant. See its placement just off the Pareto frontier in thread.Across Agent Arena categories, Kimi K3.1 Pro (Max) ranks #8 in Work, #9 in Code, and #10 in Chat.By signal, it’s the strongest in Praise vs. Complaint (implicit sentiment in user reactions) with +19% at #8. Across other signals it landed: - #11 in Steerability (+8.3%) - #15 in Bash Reliability (+8.3%) - #26 in Confirmed Success (+2%)Huge congrats to the @Kimi_Moonshot team on this release!
Kimi K3.1 Pro
