Kimi K2
by Moonshot AI
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About
Kimi K2, released by Moonshot AI on July 11, 2025, is an open-weight Mixture-of-Experts large language model with 1 trillion total parameters and 32 billion active parameters per inference. It features a 256K token context window (expanded from 128K in an September 2025 update) and demonstrated strong performance on agentic coding benchmarks. Kimi K2 targets software engineering agents, tool-use workflows, and open-source deployments under a modified MIT license.
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Pricing Range
Input (per 1M)$0.60 -$0.60
Output (per 1M)$2.50 -$2.50
Providers1
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Timeline
ReleasedJul 11, 2025
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License & Family
License
Modified MIT
Performance Overview
Performance metrics and category breakdown
Overall Performance
2 benchmarks
Average Score
44.1%
Best Score
64.3%
High Performers (80%+)
0Performance Metrics
Max Context Window
264.2KTop Categories
Agents
64.3%
Tool Use
23.9%
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All Benchmark Results for Kimi K2
Complete list of benchmark scores with detailed information
| τ-bench | Agents | 64.30 | 64.3% | Unverified | |
| MCP-Atlas | Tool Use | 23.90 | 23.9% | Unverified |