GPT-5.5 Pro is an AI model by OpenAI. View detailed benchmark scores, pricing data, and performance metrics on Serenities AI Models.
Specifications last checked against the provider on . Benchmark scores carry their own source, linked beside each number.
Cost Benchmarks
Context Benchmarks
Available from 19 providers
The same model costs different amounts depending on who serves it. You can bring your own key for 3 of these — connect it here.
| Provider | Input / 1M | Output / 1M | Cached in | Context | Your key |
|---|---|---|---|---|---|
| Poe | $27.2727 | $163.6364 | — | 400K | — |
| Cloudflare AI Gateway | $30 | $180 | — | 1.0M | — |
| CrossModel | $30 | $180 | — | 1.1M | — |
| DevPass (LLM Gateway) | $30 | $180 | — | 1.1M | — |
| Eden AI | $30 | $180 | — | 1.1M | — |
| FastRouter | $30 | $180 | — | 1.1M | — |
| Impossibl | $30 | $180 | $3 | 1.1M | — |
| Kilo Gateway | $30 | $180 | — | 1.1M | — |
| LLM Gateway | $30 | $180 | — | 1.1M | — |
| Neon | $30 | $180 | — | 1.1M | — |
| OpenAI | $30 | $180 | — | 1.1M | Supported |
| OpenCode Zen | $30 | $180 | $30 | 1.1M | — |
| OpenRouter | $30 | $180 | — | 1.1M | Supported |
| Opper | $30 | $180 | — | 1.1M | — |
| OrcaRouter | $30 | $180 | — | 1.1M | — |
| Requesty | $30 | $180 | — | 1.1M | — |
| Vercel AI Gateway | $30 | $180 | — | 1.0M | Supported |
| ZenMux | $30 | $180 | — | 1.1M | — |
| Venice AI | $37.5 | $225 | — | 1.0M | — |
GPT-5.5 Pro — Frequently Asked Questions
How much does GPT-5.5 Pro cost?
GPT-5.5 Pro costs $30.0 per 1M input tokens and $180.0 per 1M output tokens. This places it in the premium pricing tier.
What is the context window of GPT-5.5 Pro?
GPT-5.5 Pro has a context window of 1.1M tokens. This determines how much text, conversation history, and code the model can process in a single request.
Who created GPT-5.5 Pro?
GPT-5.5 Pro was created by OpenAI. It is classified as a flagship model in our catalogue.
Is GPT-5.5 Pro open source?
No, GPT-5.5 Pro is a proprietary model. It is available through OpenAI's API and compatible providers.