Kimi K2 Thinking is an AI model released by Moonshot AI on Nov 6 2025, 36 days after Kimi Linear. It is the 8th tracked release from Moonshot AI out of 10 total. It is an open-source / open-weight model.
It has 1T parameters. Its context window is 256k.
On published benchmarks, 71.3% on SWE-Bench Verified (real-world software engineering).
About Moonshot AI: Chinese AI company building the Kimi family of models. Founded in 2023, known for long-context and efficient MoE architectures.