Claude Sonnet by Anthropic
Model family · Model APIs & inference · indexed, not reviewed
on OpenRouter
Not reviewed
No score, grade or rank. This listing is facts from OpenRouter and our own checks, and it stays out of the rankings until the panel reviews it.
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...
Some of these models are reviewed as part of Claude API.
Facts
- Maker
- Anthropic
- Models
- 5 on OpenRouter
- Newest
anthropic/claude-sonnet-5.5
Why it's listed
- OpenRouter lists it, with prices from the providers that serve it.
Being indexed says nothing about quality, and nobody can pay for it. Is this yours? Ask for a review.
Models 5
| Model | Released | Context | Input / 1M | Output / 1M | Supports |
|---|---|---|---|---|---|
Claude Sonnet 5.5anthropic/claude-sonnet-5.5 | Sep 2026 | 1M | $2 | $10 | tools, structured output, reasoning, caching, file, image |
Claude Sonnet 5anthropic/claude-sonnet-5 | Jun 2026 | 1M | $2 | $10 | tools, structured output, reasoning, caching, file, image |
Claude Sonnet 4.6anthropic/claude-sonnet-4.6 | Feb 2026 | 1M | $3 | $15 | tools, structured output, reasoning, caching, file, image |
Claude Sonnet 4.5anthropic/claude-sonnet-4.5 | Sep 2025 | 1M | $3 | $15 | tools, structured output, reasoning, caching, file, image |
Claude Sonnet 4anthropic/claude-sonnet-4 | May 2025 | 200k | $3 | $15 | tools, reasoning, caching, file, image |
Prices and limits as OpenRouter lists them, in dollars per million tokens; a provider's own price can differ.