GPT-5.6 Sol Pro

OPENAI Developer Architecture Profile

Intelligence (ELO)1503Chatbot Arena Verified

Max Context1,050,000Tokens

API Cost / 1M$35.00Blended Prompt + Completion

Model Capabilities

Coding & Logic
Fictional

GPT-5.6 Sol Pro is the same underlying model as [GPT-5.6 Sol](https://openrouter.ai/openai/gpt-5.6-sol), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. Learn more in OpenAI's docs: https://developers.openai.com/api/docs/guides/reasoning#reasoning-mode

Granular Pricing Matrix

Input Tokens (Prompt)$5.00 / 1M

Output Tokens (Completion)$30.00 / 1M

Pricing data via OpenRouter. Sync: 7/9/2026

Evaluate Competitors

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