Claude Haiku 4.5
- Made by
- Anthropic
- Released
- Announced in
- Introducing Claude Haiku 4.5anthropic.com
- Event
- Claude Haiku 4.5
- API record
- /api/v1/models/claude-haiku-4-5
Benchmark results
| Benchmark | Score | Source check |
|---|---|---|
| Humanity's Last ExamNo tools · reported later, in Introducing Claude Haiku 5.5 | 10.2% | CheckedA person checked this number against its source on 16 Oct 2026. This confirms the number matches what the lab published, not that the score was reproduced.CorroboratedThe same number is printed in 1 other lab document: 1 |
| Humanity's Last ExamWith tools · reported later, in Introducing Claude Haiku 5.5 | 18.7% | CheckedA person checked this number against its source on 19 Oct 2026. This confirms the number matches what the lab published, not that the score was reproduced.CorroboratedThe same number is printed in 1 other lab document: 1 |
| GPQA Diamond128K thinking budget; averaged over 10 runs | 73.0% | CheckedA person checked this number against its source on 19 Oct 2026. This confirms the number matches what the lab published, not that the score was reproduced. |
| OSWorld 2.1Offline set, partial score · 82-task offline subset, no internet access; fixed thinking budget, no server-side context compaction; mean of 5 attempts · reported later, in Introducing Claude Haiku 5.5 | 15.7% | CorroboratedThe same number is printed in 1 other lab document: 1 |
Sources
Reported by Anthropic
- Introducing Claude Haiku 4.5anthropic.com · 15 Oct 2025
Original image - Introducing Claude Haiku 5.5anthropic.com · 7 Oct 2026
Our capture of the source
