# Claude Sonnet 5.5 — price & specs

Source: https://modelbank.ai/models/claude-sonnet-5.5 · updated 2026-09-28 · ModelBank

| Field | Value |
|---|---|
| Vendor | Anthropic |
| Input price | $2 / 1M tokens |
| Output price | $10 / 1M tokens |
| Cached input | $0.2 / 1M tokens |
| Context window | 1,000,000 tokens |
| Max output | 128,000 tokens |
| Input modalities | text,image,file |
| Reasoning / tool use | yes / yes |
| Intelligence / coding index | — / — |
| Released | 2026-09-28 |
| Retirement date | none announced |

## About

Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, succeeding Claude Sonnet 5 as a direct upgrade. It is especially strong at building features, fixing bugs, and producing...

## Price history

- 2026-09-28: $2 in / $10 out


JSON: https://modelbank.ai/api/v1/models/claude-sonnet-5.5