Claude Haiku 5.5: benchmarks, price and rank
Claude Haiku 5.5 from Anthropic is 43rd of 123 rated AI models on Spezia's leaderboard, strongest on HealthBench. It costs $0.10 in, $0.50 out per million tokens.
- 43rd of 123 rated models
- Rating 1,386
- Rated on 15 benchmarks
- Closed
- Released Oct 7, 2026
- 1 million tokens of context
- Knows the world to June 2026
Where it is strongest
- 2nd of 16 on HealthBench
Where it falls behind
- 5th of 5 on GDPval-AA
- 68th of 78 on SimpleQA Verified
- 83rd of 107 on LMArena text
Price: $0.10 in, $0.50 out per million tokens.
Its headline results
The benchmarks that count most in the rating, with its place among the models measured the same way, and where each number came from.
- APEX-Agents56.1%
Long tasks written by investment banking analysts, management consultants and corporate lawyers from their own work, done across files and apps in a realistic work setup.
24th of 56. Independent result from Epoch AI.
- Terminal-Bench 4.039.2%
Hard jobs done in a real computer terminal: building and fixing software, setting up systems, and science and engineering problems.
13th of 17. The maker's own number, from Anthropic, via LLM Stats.
- OSWorld 2.137.1%
The newer version of OSWorld, with longer desktop tasks that are graded at several checkpoints along the way.
4th of 6. The maker's own number, from Anthropic, via LLM Stats.
- SWE-Bench Pro64.8%
Long changes to real codebases in several languages, often across many files, including code from private and copyleft projects that models are unlikely to have seen.
7th of 50. The maker's own number, from Anthropic, via LLM Stats.
- FrontierSWE43.8%
Open-ended technical projects that take hours to tens of hours, from making systems faster to building large programs and applied machine learning research. Each run gets a 20-hour budget.
10th of 21. Independent result from Epoch AI.
- Humanity's Last Exam30.1%
About 2,500 questions written by experts in more than a hundred fields to be as hard as they could make them, many needing a diagram or image.
Independent result from Epoch AI.
- Vending-Bench 2$3,602
The model runs a simulated vending machine business for a year on its own: finding suppliers, ordering stock, setting prices and paying the daily fees.
45th of 60. Independent result from Epoch AI.
- GDPval-AA1,620
Work products from dozens of occupations, the kind of documents, spreadsheets and plans professionals hand in, made by the model and compared head to head with other models' work.
5th of 5. The maker's own number, from Anthropic, via LLM Stats.
- CursorBench48.4%
Ambiguous coding tasks that span many files, taken from real sessions in the Cursor code editor.
8th of 20. Independent result from Epoch AI.
- SimpleQA Verified23.8%
Short factual questions with one checked answer, asked without web search.
68th of 78. Independent result from Epoch AI.
10 more results in its full profile.
Every result with its source, what it costs per task, what jumped with its release, side by side with any other model, and answers to your questions about when to use it.
Models ranked near it
How the rating works, and every benchmark it uses: the model leaderboard.