GPT-5.5 Pro
OpenAIGPT-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...
In
$30.00
Out
$180.00
Blended
$67.50
Where to buy this model
1 access routes| Route | In | Out | Blended | vs |
|---|---|---|---|---|
| $15.00 | $90.00 | $33.75 | - |
● official API · ● cloud platform · ● inference host · USD per 1M tokens. Same model, different providers - price and quantization vary.
- Ctx
- 1.05M
- max output
- 128K
- Family
- gpt
- Modalities
- file · image · text
- Features
- json · reasoning · tools
Live pricing, updated 2026-11-03.
OpenAI models at a similar price
| Model | In | Out | Ctx |
|---|---|---|---|
| o3 Pro | $20 | $80 | 200K |
| GPT-4 | $30 | $60 | 8K |
| GPT-5 Pro | $15 | $120 | 400K |
| GPT-5.2 Pro | $21 | $168 | 400K |
| GPT-5.4 Pro | $30 | $180 | 1.05M |
| GPT-5.5 Pro · this model | $30 | $180 | 1.05M |