GPT-5.5 Pro
by OpenAI · openai/gpt-5.5-pro
GPT-5.5 Pro is OpenAI’s high-capability model optimized for deep reasoning and accuracy on complex, high-stakes workloads. It features a 1M+ token context window (922K input, 128K output) with support for...
- Input / 1M tokens
- $30.00
- Output / 1M tokens
- $180.00
- Context
- 1.05M
Specs
| Input price | $30.00 / 1M tokens |
|---|---|
| Output price | $180.00 / 1M tokens |
| Context window | 1.05M tokens |
| Max output | 128K tokens |
| Reads | file, image, text |
| Writes | text |
| Tool calling | Yes |
| Reasoning | Yes |
| Listed | Apr 24, 2026 |
List prices in USD, updated Oct 30, 2026. Providers may charge differently.
Providers
2 providers serve this model, as of Oct 30, 2026, 18:12 UTC.
| Provider | Context | Max output | Input / 1M | Output / 1M | Latency (median) | Throughput (median) | Supports | Status |
|---|---|---|---|---|---|---|---|---|
| OpenAI | 1.05M | 128K | $15.00 | $90.00 | — | — | Normal | |
| OpenAI | 1.05M | 128K | $30.00 | $180.00 | 5.82 s | 18 tok/s | Normal |
"Cheapest" is the lowest input plus output price; "Fastest" the highest median throughput. Columns empty for every provider are not shown.
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