Claude Haiku 4.5 vs DeepSeek Coder
Anthropic Claude Haiku 4.5 | DeepSeek DeepSeek Coder | |
|---|---|---|
| Overview | ||
| Company | Anthropic | DeepSeek |
| Release date | Oct 15 2025 | Nov 2 2023 |
| Access | Proprietary | Open Weight |
| 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 | DeepSeek Coder shipped 713 days before Claude Haiku 4.5 | |
Which is better: Claude Haiku 4.5 or DeepSeek Coder?
Claude Haiku 4.5 and DeepSeek Coder don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. DeepSeek Coder shipped 713 days before Claude Haiku 4.5, so benchmark comparisons should account for the intervening progress.
Claude Haiku 4.5 is proprietary, while DeepSeek Coder is open weight.
Direct benchmark comparisons are unavailable — Claude Haiku 4.5 and DeepSeek Coder 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.
DeepSeek Coder was released by DeepSeek on Nov 2 2023.
Claude Haiku 4.5 is a proprietary model released by Anthropic. DeepSeek Coder is an open weight model released by DeepSeek.
Other comparisons
Claude Haiku 4.5 vs GPT-5.6 SolDeepSeek Coder vs GPT-5.6 SolClaude Haiku 4.5 vs Gemini OmniDeepSeek Coder vs Gemini OmniClaude Haiku 4.5 vs Muse Spark 1.1DeepSeek Coder vs Muse Spark 1.1Claude Haiku 4.5 vs Grok 4.5DeepSeek Coder vs Grok 4.5Claude Haiku 4.5 vs Mistral Medium 3.5DeepSeek Coder vs Mistral Medium 3.5Claude Haiku 4.5 vs Kimi K2.7 CodeDeepSeek Coder vs Kimi K2.7 Code