Kimi K2.6: Open-Source Agent for 13-Hour Coding Sessions Your coding agent halts after 20 minutes, burns through context, and leaves you with a half-finished PR. You switch to a closed frontier model — it lasts longer but costs 5× more per run. Kimi K2.6, Moonshot AI's newly open-sourced model, is built specifically to break that trade-off. Across 4,000+ tool calls and 13-hour autonomous sessions, it delivered 58.6% on SWE-Bench Pro — edging out GPT-5.4 (57.7%) and outperforming Claude Opus 4.6 (53.4%) — at a fraction of the closed-model price. (Benchmarks sourced from kimi.com/blog/kimi-k2-6 .) TL;DR : Kimi K2.6 is now on Novita AI. 1T MoE open-source model, 256K context, 58.6% SWE-Bench Pro — built for long-horizon agentic coding. Try free via OpenAI-compatible API. Kimi K2.6 is now available on Novita AI via OpenAI-compatible API.…