Moonshot AI's 2.8T Kimi K3 tops WebDev coding leaderboard
Posts on X are treating Kimi K3's benchmark claims as a big moment for open-weight coding models, with the usual frontier-AI argument attached.
Entities: Kimi K3
Posts on X are circulating claims that Moonshot AI's Kimi K3 account is promoting a 2.8 trillion-parameter model and that widely shared posts say it reached the top of a WebDev coding leaderboard, while other widely shared posts say it also debuted at No. 3 on DeepSWE via Garry Tan's repost. So far, the public evidence is the posts themselves and the benchmark summaries quoted in them, not independent reporting or linked source documents.
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Fable has so much headroom to get better since it’s a new training run. I bet anthropic will continue to optimize efficiency and intelligence. I wonder if K3 has the same upside.
Fable at 50% discount... Kimi just gauranteed Anthropic won't remove Fable from Claude subs on July 19th 🤣 Can't wait to drive intellgence down even cheaper https://twitter.com/datacurve/status/2078189882707730535
Kimi K3 is a gut punch to Anthropic. Its over. A 2.8T open-weight-bound Chinese model just took the WebDev human-preference crown at launch, posted stronger real agentic terminal and long-horizon coding numbers than Claude Fable 5 on the tasks that actually ship products, and did it at roughly one-third the price while soon to be FREE promising full weights in ten days. The fear-based marketing that convinced so many to accept closed models, sky-high rents, and “safety” as justification for locking away frontier capability now looks like expensive theater. Mad are the politicians and academics that fell for Dario hand waving holier than tho testimony that “we must stop AI”. Kimi just drops and the world did not end. The sky did not fall Dario. Builders no longer have to pretend the only responsible path runs through Anthropic’s premium tollbooth; the open frontier just proved it can match or beat them where it counts and hand the weights to anyone with a cluster. That narrative is dead.
Kimi K3 just wiped the floor with Anthropic, despite all of Dario's hysterics and "the boy who cried wolf" bullshit. And it's going to be open sourced on July 27th.
Kimi K3 is a gut punch to Anthropic. Its over. A 2.8T open-weight-bound Chinese model just took the WebDev human-preference crown at launch, posted stronger real agentic terminal and long-horizon coding numbers than Claude Fable 5 on the tasks that actually ship products, and did it at roughly one-third the price while soon to be FREE promising full weights in ten days. The fear-based marketing that convinced so many to accept closed models, sky-high rents, and “safety” as justification for locking away frontier capability now looks like expensive theater. Mad are the politicians and academics that fell for Dario hand waving holier than tho testimony that “we must stop AI”. Kimi just drops and the world did not end. The sky did not fall Dario. Builders no longer have to pretend the only responsible path runs through Anthropic’s premium tollbooth; the open frontier just proved it can match or beat them where it counts and hand the weights to anyone with a cluster. That narrative is dead.
DeepSWE is one of those benchmarks where model differences really show. Excited to see Kimi go from K27-code's 31 points to a 2x leap with K3. Still some ground to make up against the big two, but we're on it. ⚽️
Kimi K3 debuts at #3 on DeepSWE. It's the first open-weights model that delivers frontier-level performance, achieving results similar to Claude Fable and GPT-5.6 Sol.
This emerging industry is doing what software companies are supposed to do: compete and improve products rapidly. My view is, we should treat this as normal human progress and avoid moral, regulatory, and geopolitical panics over AI.
Big news: Kimi-K3 by @Kimi_Moonshot is now #1 in the Frontend Code Arena with 1679 pts, surpassing Claude Fable 5. This is a 17-place jump from Kimi-k2.6 (#18 -> #1). In Frontend, Kimi-K3 ranked #1 in 6 of 7 domains: Brand & Marketing, Reference-Based Design, Data & Analytics, Consumer Product, Simulations, and Content Creation Tools, landing #2 only in Gaming behind Fable 5. The full model weights will be released by July 27. Congrats to the @Kimi_Moonshot team on this major milestone!
Kimi K3 debuts at #3 on DeepSWE. It's the first open-weights model that delivers frontier-level performance, achieving results similar to Claude Fable and GPT-5.6 Sol.