Kimi K3.1 Pro jumps to #8 on WebDev Arena, matching Claude Opus 5 at 70% lower cost
testingcatalog · x · 2026-10-24
LMArena announced that Kimi K3.1 Pro debuted at #8 on Code Arena: WebDev with 1692 points, a 9-place jump from Kimi K3 (#17, 1655), pushing Moonshot's Kimi back into the top-4 labs. Key facts:
- Matches Claude Opus-5 (Max) while costing 30% as much: $2/$10 per million input/output tokens
- Improved across all categories: #7 in Brand & Marketing (up from #9), #9 in Simulations (up from #20)
- Median cost per task of $1.23, 29% cheaper than Kimi K3
- Open weights release confirmed; leaderboard shows it ahead of Claude Opus 5 and GPT-6 Sol
Related event: Kimi K3.1 Pro cracks Code Arena top 10 at a fraction of Claude's cost(4 posts)→
More from Models
- Community claims Kimi k3.1 is the most 'benchmaxxed' model ever, alleging distillation — imjustnewatai · 2026-10-24
- Leaker: Grok 4.8 arriving next week — mark_k · 2026-10-24
- Kimi K3.1 Costs ~3x DeepSeek Flash Per Task but Nearly Doubles Terminal-Bench 4 Score — bookwormengr · 2026-10-24
- Labs are far ahead of what they release — and the gap may be widening, speculates X user — MoonL88537 · 2026-10-24
- API Pricing Cut from $15 to $10 per Million Tokens — cedric_chee · 2026-10-24
- MiniMax's 430B model beats 3T-scale rivals on AA knowledge benchmark — teortaxesTex · 2026-10-24