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 the easy half. What it costs you also depends on how fast the first token arrives and what survives concurrency — that part is measured. See every Anthropic model on its provider page.