Claude 2 vs Kimi K2 Thinking
Anthropic Claude 2 | Moonshot AI Kimi K2 Thinking | |
|---|---|---|
| Overview | ||
| Company | Anthropic | Moonshot AI |
| Release date | Jul 11 2023 | Nov 6 2025 |
| Access | Proprietary | Open Weight |
| Specifications | ||
Parameters | — | 1T |
Context window | — | 256k |
| Benchmarks | ||
Coding SWE-Bench VerifiedReal coding tasks pulled from open-source projects — the AI has to find and fix actual bugs. A human-checked version of the original SWE-Bench. Higher is better. | — | 71.3% |
| Timeline | ||
| Release gap | Claude 2 shipped 849 days before Kimi K2 Thinking | |
Which is better: Claude 2 or Kimi K2 Thinking?
Claude 2 and Kimi K2 Thinking don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Claude 2 shipped 849 days before Kimi K2 Thinking, so benchmark comparisons should account for the intervening progress.
Claude 2 is proprietary, while Kimi K2 Thinking is open weight.
Direct benchmark comparisons are unavailable — Claude 2 and Kimi K2 Thinking don't publish scores on any of the same benchmarks.
Frequently asked questions
Claude 2 was released by Anthropic on Jul 11 2023.
Kimi K2 Thinking was released by Moonshot AI on Nov 6 2025.
Claude 2 is a proprietary model released by Anthropic. Kimi K2 Thinking is an open weight model released by Moonshot AI.
Other comparisons
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