Kimi K2 Instruct 0905

Kimi K2 Instruct 0905 is the September 2025 iteration of Kimi K2 Instruct, carrying the latest capability improvements in Moonshot's instruction-tuned agentic model. It extends the context window from 128K to 256K tokens, supporting longer-horizon tasks, documents, and conversations. The update improves coding performance on public benchmarks and real-world agentic programming. It reports 69.2% on SWE-Bench Verified and 66.6% on SWE-Dev, and refines front-end programming to produce more useful and polished code outputs. It keeps the 1 trillion parameter MoE architecture with 32 billion active parameters and strong tool calling for autonomous agent orchestration. It supports structured output and suits development tasks that need extended context, precise instruction following, and tool coordination across longer workflows.