Introducing Kimi K3.1 Pro

Moonshot released Kimi K3.1 Pro on the Kimi API on 23rd October 2026, with full model weights promised by Nov 4, 2026, plus a "Highspeed" version that is 2-3x faster at twice the price (input token cache hits priced the same). USD pricing is $2.00/million input tokens and $10/million output tokens, the same as GPT-6.1 Sol and half the price of Claude Opus 5.5, and Artificial Analysis scored Kimi at 55, ahead of Claude Fable 5.1, GPT-6 Astra and Gemini 4 Argon (all 53) and behind only Claude Opus 5.5 (58). The author tested it via the Moonshot API using the llm openai endpoint command added to LLM 0.32, generating pelican SVGs at low, medium and max reasoning levels and comparing them against Kimi K3.