Claude Opus 5 costs $16.08 per million words.
Anthropic lists it at $5 per million input tokens and $25 per million output tokens on Anthropic’s pricing page, read 4:40 PM Eastern, Oct 7, 2026. It bills about 1,608 tokens for a thousand English words, so a million words, three in for every one out, costs $16.08.
- Maker
- Anthropic
- Input
- $5 per million tokens
- Output
- $25 per million tokens
- Cached input
- $0.50 per million tokens
- Tokens for 1,000 words
- 1,608, measured by Brass on Oct 7, 2026
- Source
- Anthropic’s pricing page
Brass does not offer Claude Opus 5 in its chat. The nearest model it offers from Anthropic is Claude Opus 5.5: $12.87 per million words at Anthropic’s price, $16.08 in the Brass chat.
To use the models Brass offers, buy a pack.
Price history
| From | Per million words | Per million tokens, in / out |
|---|---|---|
| Oct 7, 2026 | $16.08 | $5 / $25 |
We began tracking Claude Opus 5 on Oct 7, 2026.