Claude Haiku 4.5 vs Kimi Linear
Anthropic Claude Haiku 4.5 | Moonshot AI Kimi Linear | |
|---|---|---|
| Overview | ||
| Company | Anthropic | Moonshot AI |
| Release date | Oct 15 2025 | Oct 2025 |
| Access | Proprietary | Open Weight |
| Specifications | ||
Parameters | — | 48B |
| Benchmarks | ||
Nonsense detection BullshitBench v2Given a confidently-worded but nonsensical prompt, does the AI spot that it makes no sense and push back — instead of playing along and inventing an answer? The score is how often it clearly called out the nonsense. Higher is better. | 77% | — |
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. | 73.3% | — |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 73% | — |
| Timeline | ||
| Release gap | Kimi Linear shipped 14 days before Claude Haiku 4.5 | |
Which is better: Claude Haiku 4.5 or Kimi Linear?
Claude Haiku 4.5 and Kimi Linear don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Kimi Linear shipped 14 days before Claude Haiku 4.5, so benchmark comparisons should account for the intervening progress.
Claude Haiku 4.5 is proprietary, while Kimi Linear is open weight.
Direct benchmark comparisons are unavailable — Claude Haiku 4.5 and Kimi Linear don't publish scores on any of the same benchmarks.
Frequently asked questions
Claude Haiku 4.5 was released by Anthropic on Oct 15 2025.
Kimi Linear was released by Moonshot AI on Oct 2025.
Claude Haiku 4.5 is a proprietary model released by Anthropic. Kimi Linear is an open weight model released by Moonshot AI.
Other comparisons
Claude Haiku 4.5 vs GPT-5.6 SolKimi Linear vs GPT-5.6 SolClaude Haiku 4.5 vs Gemini OmniKimi Linear vs Gemini OmniClaude Haiku 4.5 vs Muse Spark 1.1Kimi Linear vs Muse Spark 1.1Claude Haiku 4.5 vs Grok 4.5Kimi Linear vs Grok 4.5Claude Haiku 4.5 vs DeepSeek-V4-ProKimi Linear vs DeepSeek-V4-ProClaude Haiku 4.5 vs Mistral Medium 3.5Kimi Linear vs Mistral Medium 3.5