LLMAPI only
Claude Opus 4.6
Anthropic
Updated May 21, 2026 · Benchmarks via Artificial Analysis, specs & pricing via OpenRouter · Methodology · Report an error
Superseded by Claude Opus 4.7
Specifications
- Type
- LLM
- Access
- API only
- Released
- February 5, 2026
- License
- Proprietary
- Context window
- 1,000,000 tokens
- Output speed
- 48 tok/s
- Latency (TTFT)
- 1.65s
- Input
- Text, Image
- Output
- Text
- API pricing
- $5.00 in · $25.00 out / 1M tokens
Capabilities
Function callingStructured outputWeb search
Benchmarks
Reasoning
| GPQA Diamond | 91.3 |
| ARC-AGI-2 | 68.8 |
Coding
Multimodal
| MMMU-Pro | 77.3 |
General
| Terminal-Bench 2.0 | 65.4 |
| Humanity’s Last Exam | 36.7 |
Other
| Terminal-Bench 2.0 | 65.4 |
Our take
Brought Opus to a 1M-token context with large reasoning gains, and introduced Anthropic’s dateless pinned-snapshot model IDs.