Moonshot launches Kimi K3.1 Pro and deliberately weakens its hacking ability
Moonshot AI released Kimi K3.1 Pro, a post-trained K3 with a 1M-token context, on Kimi.ai, Kimi Work, Kimi Code and the API, with open weights promised by Nov. 4. It reports 65.7% on Terminal-Bench 4.0 and an internal hallucination rate cut from 23.4% to 8.3%. It removed offensive-security training data: on xdev-bench-hard the release scores 81.0% versus 90.5% unfiltered.
Why it matters
Moonshot is openly trading away some capability to reduce offensive cyber skills, addressing a core worry about releasing open weights. All benchmark numbers are self-reported and not yet independently verified.
Sources5
Moonshot AIOfficial · BlogIntroducing Kimi K3.1 ProView original · The Next WebMediaMoonshot releases Kimi K3.1 Pro and says it cut its hacking skillsView original ·
ReutersMediaMoonshot curbs hacking ability in new Kimi model as fears grow over AI-powered cyberattacksView original · via Investing.com ·
- @TypingMindAppXKimi K3.1 Pro is available on TypingMind pricing is affordable too at $2 in / $10 out per 1M tokens (plus $0.2 for cached)View original ·
- @arenaXKimi 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! https://twitter.com/arena/status/2113687344532320326View original ·
Written by dalao.ai: the title, summary and why it matters are our own words. The original reports are the record; their publishers keep authorship.