Anthropic
Claude Opus 4.5
Previous Anthropic flagship — still strong at coding, superseded by 4.6.
Context
200K
Max output
64K
Input /1M
$5.00
Output /1M
$25.00
Live pricing via OpenRouter
Best for
- Coding (80.9% SWE-bench Verified)
- Workloads not yet migrated to 4.6
Benchmarks
| swe bench verified | 80.9 |
| terminal bench 2 | 59.8 |
| arc agi 2 | 37.6 |
| osworld | 66.3 |