Kimi K2-Instruct-0905

Overview

Overview

Kimi K2-Instruct-0905 is the latest, most capable version of Kimi K2, achieving state-of-the-art performance in frontier knowledge, math, and coding among non-thinking models. This Mixture-of-Experts model features 32 billion activated parameters and 1 trillion total parameters, meticulously optimized for agentic tasks. Key features include enhanced agentic coding intelligence, extended context length to 256K tokens, and a hybrid architecture trained with MuonClip optimizer on 15.5T tokens. The model achieves 65.8% on SWE-bench Verified (single attempt), 47.3% on SWE-bench Multilingual, and excels at tool use with 70.6% on Tau2-retail. It is a reflex-grade model without long thinking, designed to act and execute complex tasks seamlessly.

Kimi K2-Instruct-0905 was released on September 5, 2025.

Benchmarks

Benchmarks

Kimi K2-Instruct-0905 Performance Across Datasets

Scores sourced from the model's scorecard, paper, or official blog posts

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llm-stats.com - Sat Feb 21 2026

Pricing

Pricing

Pricing, performance, and capabilities for Kimi K2-Instruct-0905 across different providers:

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