Moonshot AI Kimi K2 Thinking

Kimi K2 Thinking by Moonshot AI excels in the Coding category, where it ranks #138 with a composite score of 73/100. Kimi K2 Thinking is Moonshot AI’s most advanced open reasoning model to date, extending the K2 series into agentic, long-horizon reasoning. Built on the trillion-parameter Mixture-of-Experts (MoE) architecture introduced in Kimi K2, it activates 32 billion parameters per forward pass and supports 256 k-token context windows. The model is optimized for persistent step-by-step thought, dynamic tool invocation, and complex reasoning workflows that span hundreds of turns. It interleaves step-by-step reasoning with tool use, enabling autonomous research, coding, and writing that can persist for hundreds of sequential actions without drift. It sets new open-source benchmarks on HLE, BrowseComp, SWE-Multilingual, and LiveCodeBench, while maintaining stable multi-agent behavior through 200–300 tool calls. Built on a large-scale MoE architecture with MuonClip optimization, it combines strong reasoning depth with high inference efficiency for demanding agentic and analytical tasks. It is particularly strong in areas highlighted by its top benchmark performance and adoption metrics, making it suitable for both individual developers and enterprise teams looking for a reliable coding solution.

Kimi K2 Thinking is priced at $0.47 per million input tokens and $2.00 per million output tokens (USD). Contact the provider for volume discounts and enterprise pricing. Pricing is competitive within the coding category and reflects the model's quality-to-cost ratio.

In the Coding category, Kimi K2 Thinking holds rank #138 out of 6 models tracked. Its quality rank is #138 and adoption rank is #138. You can use our comparison tool at /compare to see detailed side-by-side metrics with specific alternatives. Key differentiators include its composite scoring across benchmarks, community sentiment, and real-world adoption rates.

Kimi K2 Thinking has been evaluated across 5 different signals. Its strongest areas include Capabilities (67/100), Pricing (2/100), Context Window (81/100). These scores are derived from industry-standard benchmarks, community ratings, and real-world performance metrics. The composite score of 73/100 reflects a weighted combination of all tracked signals.

Kimi K2 Thinking is a paid model, though some providers may offer trial credits or limited free tiers for evaluation. Check Moonshot AI's website for current free tier availability and promotional offers.