claude-opus-5
A Anthropic model. Every figure below was read off Anthropic's own pricing page and stamped with the date it was read — last pass 2026-08-04. Nothing here is estimated.
| Input / 1M tokens | $5 |
| Output / 1M tokens | $25 |
| Context window | 1M |
| Max output | 128k |
| Knowledge cutoff | May 2026 |
Price is only one decision input. Runtime performance requires reproducible measurement; the benchmark protocol explains what is measured and clearly marks results that are still pending. See every Anthropic model on its provider page.