Claude 2.1 vs Kimi Linear
Anthropic Claude 2.1 | Moonshot AI Kimi Linear | |
|---|---|---|
| Overview | ||
| Company | Anthropic | Moonshot AI |
| Release date | Nov 21 2023 | Oct 2025 |
| Access | Proprietary | Open Weight |
| Specifications | ||
Parameters | — | 48B |
| Timeline | ||
| Release gap | Claude 2.1 shipped 680 days before Kimi Linear | |
Which is better: Claude 2.1 or Kimi Linear?
Claude 2.1 and Kimi Linear don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Claude 2.1 shipped 680 days before Kimi Linear, so benchmark comparisons should account for the intervening progress.
Claude 2.1 is proprietary, while Kimi Linear is open weight.
Direct benchmark comparisons are unavailable — Claude 2.1 and Kimi Linear don't publish scores on any of the same benchmarks.
Frequently asked questions
Claude 2.1 was released by Anthropic on Nov 21 2023.
Kimi Linear was released by Moonshot AI on Oct 2025.
Claude 2.1 is a proprietary model released by Anthropic. Kimi Linear is an open weight model released by Moonshot AI.
Other comparisons
Claude 2.1 vs GPT-5.6 SolKimi Linear vs GPT-5.6 SolClaude 2.1 vs Gemini OmniKimi Linear vs Gemini OmniClaude 2.1 vs Muse Spark 1.1Kimi Linear vs Muse Spark 1.1Claude 2.1 vs Grok 4.5Kimi Linear vs Grok 4.5Claude 2.1 vs DeepSeek-V4-ProKimi Linear vs DeepSeek-V4-ProClaude 2.1 vs Mistral Medium 3.5Kimi Linear vs Mistral Medium 3.5