Moonshot AI Kimi K2 0905

Kimi K2 0905 by Moonshot AI excels in the Coding category, where it ranks #181 with a composite score of 66/100. Kimi K2 0905 is the September update of [Kimi K2 0711](moonshotai/kimi-k2). It is a large-scale Mixture-of-Experts (MoE) language model developed by Moonshot AI, featuring 1 trillion total parameters with 32 billion active per forward pass. It supports long-context inference up to 256k tokens, extended from the previous 128k. This update improves agentic coding with higher accuracy and better generalization across scaffolds, and enhances frontend coding with more aesthetic and functional outputs for web, 3D, and related tasks. Kimi K2 is optimized for agentic capabilities, including advanced tool use, reasoning, and code synthesis. It excels across coding (LiveCodeBench, SWE-bench), reasoning (ZebraLogic, GPQA), and tool-use (Tau2, AceBench) benchmarks. The model is trained with a novel stack incorporating the MuonClip optimizer for stable large-scale MoE training. 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 0905 is priced at $0.40 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 0905 holds rank #181 out of 6 models tracked. Its quality rank is #181 and adoption rank is #181. 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 0905 has been evaluated across 5 different signals. Its strongest areas include Capabilities (50/100), 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 66/100 reflects a weighted combination of all tracked signals.

Kimi K2 0905 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.