Claude 3.5 Haiku vs Claude 3.5 Sonnet (upgraded)
Anthropic Claude 3.5 Haiku | Anthropic Claude 3.5 Sonnet (upgraded) | |
|---|---|---|
| Overview | ||
| Company | Anthropic | Anthropic |
| Release date | Oct 22 2024 | Oct 22 2024 |
| Access | Proprietary | Proprietary |
| 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. | 50% | — |
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. | 40.6% | 49%Best |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 41.6% | — |
| Timeline | ||
| Release gap | Released on the same day | |
Which is better: Claude 3.5 Haiku or Claude 3.5 Sonnet (upgraded)?
Claude 3.5 Sonnet (upgraded) leads Claude 3.5 Haiku on 1 of the 1 benchmark they both report (SWE-Bench Verified). Both models were released on the same day — Oct 22 2024.
Published specifications for these two models are limited — see each model page for the latest details.
On SWE-Bench Verified, Claude 3.5 Sonnet (upgraded) leads at 49% vs Claude 3.5 Haiku at 40.6%.
Frequently asked questions
Claude 3.5 Haiku was released by Anthropic on Oct 22 2024.
Claude 3.5 Sonnet (upgraded) was released by Anthropic on Oct 22 2024.
Claude 3.5 Sonnet (upgraded) leads on SWE-Bench Verified — Claude 3.5 Haiku 40.6% vs Claude 3.5 Sonnet (upgraded) 49%.
Other comparisons
Claude 3.5 Haiku vs GPT-5.6 SolClaude 3.5 Sonnet (upgraded) vs GPT-5.6 SolClaude 3.5 Haiku vs Gemini OmniClaude 3.5 Sonnet (upgraded) vs Gemini OmniClaude 3.5 Haiku vs Muse Spark 1.1Claude 3.5 Sonnet (upgraded) vs Muse Spark 1.1Claude 3.5 Haiku vs Grok 4.5Claude 3.5 Sonnet (upgraded) vs Grok 4.5Claude 3.5 Haiku vs DeepSeek-V4-ProClaude 3.5 Sonnet (upgraded) vs DeepSeek-V4-ProClaude 3.5 Haiku vs Mistral Medium 3.5Claude 3.5 Sonnet (upgraded) vs Mistral Medium 3.5