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GPT-5.5

OpenAIModel IDgpt-5.5
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GPT-5.5

OpenAIModel IDgpt-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 context window (922K input, 128K output) with support for text and image inputs, enabling large-scale reasoning, coding, and multimodal workflows within a single system.

ModeText / Image / File / Audio / Video → Text / Image / Audio / Video
Input price$5 / 1M tokens
Output price$30 / 1M tokens
Context length922K tokens

Capabilities & limits

Use cases
Not available
Model capabilities
Not available
Model Brand
OpenAI
Input modality
Text / Image / File / Audio / Video
Output modality
Text / Image / Audio / Video
Max output
128K tokens

Pricing

ProviderBilling typePrice summary
O
OpenAI-Balanced
Per token
Input price$5per 1M tokens
Completion price$30per 1M tokens
Cache read price$0.5per 1M tokens
Cache write price—
O
OpenAI-Custom
Per token
Input price$5per 1M tokens
Completion price$30per 1M tokens
Cache read price$0.5per 1M tokens
Cache write price—

Integration

Code Example

curl http://127.0.0.1:4179/v1/chat/completions \
  -H "Authorization: Bearer <YOUR_API_KEY>" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-5.5",
    "messages": [
      {
        "role": "user",
        "content": "Hello"
      }
    ]
  }'

Replace <YOUR_API_KEY> with the API key generated on your token management page.

Authentication

All requests must include the Authorization: Bearer <TOKEN> header.

Endpoint Path

POST
openai

Supported Parameters

ParameterTypeDefaultDescription
string-
string-
string-
string-
string-
string-
string-
string-
string-

Rate Limits

RPM

No rate limits configured

RPM = requests per minute.