# Claude Opus 4.6: AI model fact sheet

- **Provider:** anthropic
- **Released:** 2026-02-04
- **Context window:** 1,000,000 tokens
- **API pricing:** $5.00 / 1M input, $25.00 / 1M output
- **OpenRouter ID:** anthropic/claude-opus-4.6
- **Capabilities:** conversation, reasoning, code-generation, analysis, tool-use

Anthropic's strongest model for coding and long-running professional tasks. Built for agents that operate across entire workflows rather than single prompts, excelling at large codebases, complex refactors, and multi-step debugging. Shows deeper contextual understanding, stronger problem decomposition, and greater reliability on hard engineering tasks. Also excels at sustained knowledge work, producing near-production-ready documents, plans, and analyses in a single pass.

## Benchmarks

| Benchmark | Score |
| --- | --- |
| SWE-bench Verified | 80.8% |
| Terminal-Bench 2.0 | 65.4% |
| OSWorld | 72.7% |

Source: real side-by-side outputs, pricing and specs at https://rival.tips/models/claude-opus-4.6