GPT-5.1 (2025-11-13)

openai/gpt-5.1-2025-11-13

Version-pinned snapshot of GPT-5.1 from the November 13, 2025 release. Use this when audits or regulated workflows require deterministic behavior.

Reasoning
Tool calling
Structured output

Chat with this model Create an API key

Pricing

Includes our margin. Charged per request from your balance.

Input: $1.38 per 1M tokens
Output: $11 per 1M tokens
Cache read: $0.138 per 1M tokens
Typical message: $0.0066

Details

Provider: OpenAI
Context: 400K tokens
Max output: 128K tokens
Added: Jan 1, 2024
Reasoning effort: none, low, medium, high

Use it from the API

Replace $HIDE_API_KEY with a key from the Developers page. Base URL https://hide.st/api/v1.

curl https://hide.st/api/v1/chat/completions \
  -H "Authorization: Bearer $HIDE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/gpt-5.1-2025-11-13",
    "messages": [
      {"role": "user", "content": "Hello!"}
    ]
  }'