Kimi K2.5 is an AI model released by Moonshot AI on Jan 27 2026, 82 days after Kimi K2 Thinking. It is an open-source / open-weight model. Benchmark results (shown above) cover SWE-Bench Verified, and GPQA Diamond.
About Moonshot AI: Chinese AI company building the Kimi family of models. Founded in 2023, known for long-context and efficient MoE architectures.