Claude Sonnet 5 vs Claude Sonnet 5.5
Claude Sonnet 5 is the cheaper option on input; Claude Sonnet 5 is cheaper on output. Figures below are per million tokens, from vendor pricing cited in our reporting.
| Claude Sonnet 5 | Claude Sonnet 5.5 | |
|---|---|---|
| Input per 1M tokens | $2 | $2 |
| Output per 1M tokens | $10 | $10 |
| Cached input per 1M | — | $0.10 |
| Context window | — | 1M tokens |
| Parameters | — | — |
| Licence | proprietary | |
| Benchmark | — | — |
| Vendor | Anthropic | Anthropic |
| Released | 11 Aug 2026 | — |
What the numbers say
- Input price gap: 0% ($2 vs $2).
- Blended three-to-one input/output rate: $16.00 for Claude Sonnet 5, $16.00 for Claude Sonnet 5.5.
- Context: — against 1M tokens.
- Licence: Claude Sonnet 5 is proprietary; Claude Sonnet 5.5 is .
Sources
Claude Sonnet 5 specs · Claude Sonnet 5.5 specs · Full price index