waypoints.si The sky Every system The lead Countries Forecast revisions
Claude Opus 4.5
Anthropic, 24 Nov 2025.
- Lab
- Anthropic
- Released
- 24 Nov 2025
- Kind
- Language, Code generation
- Training compute
- Not disclosed
- Parameters
- Not disclosed
- Capability index
- 150.1 (Epoch)
- Task length at 50% success
- 4.9 h (METR)
- Organisations
- Anthropic
- Country
- United States
See it in the 3D sky Paper or announcement
Data: Epoch AI (Creative Commons Attribution), releases too new for it from OpenRouter, and METR. Updated 25 Sep 2026.