Claude 3.5 Sonnet (upgraded) vs Kimi Linear
Anthropic Claude 3.5 Sonnet (upgraded) | Moonshot AI Kimi Linear | |
|---|---|---|
| Overview | ||
| Company | Anthropic | Moonshot AI |
| Release date | Oct 22 2024 | Oct 2025 |
| Access | Proprietary | Open Weight |
| Specifications | ||
Parameters | — | 48B |
| 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. | 49% | — |
| Timeline | ||
| Release gap | Claude 3.5 Sonnet (upgraded) shipped 344 days before Kimi Linear | |
Which is better: Claude 3.5 Sonnet (upgraded) or Kimi Linear?
Claude 3.5 Sonnet (upgraded) and Kimi Linear don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Claude 3.5 Sonnet (upgraded) shipped 344 days before Kimi Linear, so benchmark comparisons should account for the intervening progress.
Claude 3.5 Sonnet (upgraded) is proprietary, while Kimi Linear is open weight.
Direct benchmark comparisons are unavailable — Claude 3.5 Sonnet (upgraded) and Kimi Linear don't publish scores on any of the same benchmarks.
Frequently asked questions
Claude 3.5 Sonnet (upgraded) was released by Anthropic on Oct 22 2024.
Kimi Linear was released by Moonshot AI on Oct 2025.
Claude 3.5 Sonnet (upgraded) is a proprietary model released by Anthropic. Kimi Linear is an open weight model released by Moonshot AI.