CAPI
Models/GPT
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GPT

by OpenAI

OpenAI's flagship reasoning and chat models through the OpenAI-compatible chat completions endpoint.

Get API KeyRead the docs

Capabilities

  • Chat
  • Responses API
  • Tool use
  • Vision

Available models

Pass any of these IDs in the model field.

Model IDDetailPrice
gpt-5.6-sol400K context$6.00 / 1M input tokens
gpt-5.6400K context$2.50 / 1M input tokens
gpt-5-mini200K context$0.50 / 1M input tokens

Pricing starts at

$0.0005 / 1K tokens

Pay only for what you use. Each response returns the exact amount settled against your balance — no subscriptions, no minimums.

Quickstart

GPT · gpt-5.6-sol

cURL
curl https://capi.ai/api/v1/chat/completions \
  -H "Authorization: Bearer YOUR_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-5.6-sol",
    "messages": [{"role": "user", "content": "Hello"}]
  }'

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