Skip to content
OpenAIgpt-5.6-sol

GPT-5.6 Sol

Frontier GPT-5.6 reasoning for complex professional work.

GPT-5.6 Sol is the highest-reasoning model in the 5.6 family — the one to pick when a professional task is complex enough to want the best answer the family can give.

  • Complex reasoning
  • Professional work
  • Coding

Model details

Context window
1.1M tokens
Max output
128K tokens
Input
Text, images
Output
Text
Capabilities
Reasoning, Vision, Tool calling, Streaming, JSON output
Interfaces
OpenAI-style Chat Completions, Anthropic-style Messages, OpenAI-style Responses

Pricing

Per 1M tokens. The Inferray price is what you are charged — no gateway fee is added on top of it.

GPT-5.6 Sol pricing: the provider's list price and the Inferray price for each.
MetricList priceYou pay
Input$4$3.20
Cached input$0.40$0.32
Output$20$16.00

Why teams pick it

  • Highest reasoning capability in the GPT-5.6 family
  • Vision and tool calling included
  • Over 1M tokens of context

Call GPT-5.6 Sol

GPT-5.6 Sol answers on any of the APIs below — pick the one your code already speaks and just swap in your Inferray key.

/v1/chat/completionsOpenAI-style Chat Completions · openai SDK or plain HTTP
curl https://api.inferray.com/v1/chat/completions \
  -H "Authorization: Bearer inferray_..." \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-5.6-sol",
    "messages": [{"role": "user", "content": "ship it"}]
  }'
/v1/messagesAnthropic-style Messages · @anthropic-ai/sdk SDK or plain HTTP
curl https://api.inferray.com/v1/messages \
  -H "Authorization: Bearer inferray_..." \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-5.6-sol",
    "max_tokens": 1024,
    "messages": [{"role": "user", "content": "ship it"}]
  }'
/v1/responsesOpenAI-style Responses · openai SDK or plain HTTP
curl https://api.inferray.com/v1/responses \
  -H "Authorization: Bearer inferray_..." \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-5.6-sol",
    "input": "ship it"
  }'

More from OpenAI