Claude Sonnet 4
Sonnet 4.6 brings much-improved coding skills to more of Anthropic’s users. Improvements in consistency, instruction following, and more have made developers with early access prefer Sonnet 4.6 to its predecessor by a wide margin. They often even prefer it to Anthropic’s smartest model from November 2025, Claude Opus 4.5.
3 subscribers
9.1/10 popularity
49798 ms avg latency
95% success rate
1 endpoints
The in-depth APIMemo review for this API hasn't been published yet —
the data below comes straight from the public marketplace listing.
Claude Sonnet 4 endpoints
| Method | Endpoint | Description |
|---|---|---|
| POST |
Chat Completion /chat/completions |
Creates a model response for the given chat conversation. |
Claude Sonnet 4 pricing
| Plan | Price | Rate limit | Quotas |
|---|---|---|---|
| BASIC | $1 / month | — |
|
| PRO | $5 / month | — |
|
| ULTRA | $25 / month | — |
|
| MEGA Recommended | $75 / month | — |
|
