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GPT-5.6 Sol

by OpenAI · Language Models

Context 1050K tokensVisionReasoning / thinkingFunction calling

Overview

Flagship model for complex professional work. GPT-5.6 Sol is the top tier of the GPT-5.6 family—strongest at complex reasoning, coding, and agentic workflows. 1.05M context window; reasoning effort from none to max.

Context window1050K tokens
Max output128K tokens
Input → Outputtext, images → text
CapabilitiesVision, Reasoning / thinking, Function calling

Pricing

from $25.9 / 1M tokens

UsageRate (USD)Unit
Input tokens$5.18per 1M tokens
Cached input (cache hit)$0.52per 1M tokens
Output tokens$25.9per 1M tokens

TuneRouter live platform pricing · currency: USD · pre-deduction settled by actual usage

Call it in 30 seconds

OpenAI-compatible · base URL https://api.tunerouter.com/v1/

POST/chat/completions
curl https://api.tunerouter.com/v1/chat/completions \
  -H "Authorization: Bearer $TUNEROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "gpt-5.6-sol", "messages": [{"role": "user", "content": "Hello!"}]}'

Model ID: gpt-5.6-sol · works with OpenAI SDKs — just point base_url at api.tunerouter.com

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