Available now
OpenAI
gpt-5.5
GPT-5.5 is OpenAI’s frontier model designed for complex professional workloads, building on GPT-5.4 with stronger reasoning, higher reliability, and improved token efficiency on hard tasks. It features a 1M+ token...
TextReasoningToolsFilesVision1.1MCacheWebSearch
Input$0.21/ 1M
Output$1.28/ 1M
Endpointsopenai
Performance
Loading performance data...
§ 01
Pricing
| Input price | $0.21 · 1M tokens |
| Output price | $1.28 · 1M tokens |
| Compatible endpoints | openai |
| Vendor | OpenAI |
§ 02
Call gpt-5.5 from your code
Point any OpenAI-compatible SDK at UnoRouter and request the model by name. Replace YOUR_API_KEY with a real key from your dashboard.
bash
curl https://api.unorouter.ai/v1/chat/completions \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "gpt-5.5",
"messages": [{"role": "user", "content": "Hello!"}]
}'§ 03
Frequently asked questions
How much does gpt-5.5 cost per 1M tokens?
Input is priced at $0.21 per 1M tokens, output at $1.28 per 1M tokens. Billing is per token, no rounding to batch sizes.
How do I access gpt-5.5 via API?
Send requests to the UnoRouter /v1/chat/completions endpoint with model=gpt-5.5. Any OpenAI-compatible client library works. Authentication uses a standard Bearer token.
§ 04