Claude Opus 4.8
Current · Released: May 28, 2026
- Context window
- 1.000.000 tokens
- Max output
- 128.000 tokens
- Price input / 1M tokens
- $5.00
- Price output / 1M tokens
- $25.00
- Price cache-read / 1M
- $0.50
Benchmark scores
- GDPval
- 1,890.0
- GPQA Diamond
- 93.6
- SWE-bench Pro
- 69.2
- OSWorld-Verified
- 83.4
- SWE-bench Verified
- 88.6
- Terminal-Bench 2.1
- 74.6
- Humanity's Last Exam
- 57.9
Notes
Successor to Opus 4.7. Four times less likely to miss code bugs. Adaptive thinking automatically adjusts reasoning depth. Fast mode (research preview): 2.5x higher output speed. Mid-conversation system messages and lower prompt cache threshold (1,024 tokens). Dynamic workflows for hundreds of parallel subagents.