GPT-5.1
GPT-5.1 is an advanced AI model from OpenAI that improves on GPT-5 with better reasoning, faster responses on easy tasks, deeper thinking on hard tasks, and more natural conversation. It follows instructions more accurately, adapts to your tone, and handles complex problems, coding, and long conversations more reliably.
3 subscribers
9.4/10 popularity
5518 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.
GPT-5.1 endpoints
| Method | Endpoint | Description |
|---|---|---|
| POST |
Chat Completion /chat/completions |
Creates a model response for the given chat conversation. |
GPT-5.1 pricing
| Plan | Price | Rate limit | Quotas |
|---|---|---|---|
| BASIC | $1 / month | — |
|
| PRO | $5 / month | — |
|
| ULTRA | $25 / month | — |
|
| MEGA Recommended | $75 / month | — |
|
