moonshotai/kimi-k2-thinkingKimi K2 Thinking is Moonshot’s open-weights AI model, released Nov 6, 2025. It costs $0.60/M input and $2.50/M output tokens, and handles a 262K-token context window.
Kimi K2 Thinking is Moonshot AI’s most advanced open reasoning model to date, extending the K2 series into agentic, long-horizon reasoning.
Scores on standardized evaluations. Higher is better — and rank shows where Kimi K2 Thinking lands among all models tracked on Model Beat.
Graduate-level scientific reasoning
Frontier of human expert knowledge
Broad expert knowledge
Factual accuracy & hallucination
Novel ML problem-solving
Contamination-free coding
Scientific research coding
Human-rated web development
Olympiad-qualifier math
Research-level math problems
Hardest research math
Multi-step agentic tasks
Autonomous task length
Command-line agentic tasks
Tool-agent-user reliability
Kimi K2 Thinking is Moonshot AI’s most advanced open reasoning model to date, extending the K2 series into agentic, long-horizon reasoning.
Kimi K2 Thinking is an AI model developed by Moonshot, part of the Kimi family, released Nov 6, 2025.
Kimi K2 Thinking is served from $0.60 per million input tokens and $2.50 per million output tokens (cheapest credible provider on OpenRouter: Novita).
Kimi K2 Thinking supports a context window of up to 262K tokens.
On standardized evaluations tracked by Epoch AI, Kimi K2 Thinking scores 85.3% on LiveCodeBench, 93.0% on τ²-bench, 84.8% on MMLU-Pro.
Kimi K2 Thinking is released with open weights (Open weights (restricted use)), so the model can be downloaded and self-hosted.
Benchmark data from Epoch AI (CC BY) and Artificial Analysis; pricing, specs & descriptions from OpenRouter. Data updated Jul 30, 2026.