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Claude Opus 4.8
AvailableAnthropicFrontierProprietary
Anthropic's most capable model, with strengthened agentic and long-running task performance.
Specifications
- License
- Proprietary
- Weights
- Not released
- Architecture
- unknown
- Parameters
- Undisclosed
- Context window
- 500K tokens
- Max output
- 64K tokens
- Knowledge cutoff
- Nov 30, 2025
- Price (in / out, $/M)
- $15 / $75
- Modalities
- TextVisionCode
Benchmarks
SWE-bench Verifiedself-reported
81.5%GPQA Diamondself-reported
89%Vendor-reported figures are claims until independently verified. See methodology.