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GPT-5.6 Sol API pricing

Compare the published GPT-5.6 Sol (gpt-5.6-sol) list rate with corouter's outlet rate, and estimate a monthly token bill. GPT-5.6 Sol remains the high GPT-5.6 ID, with a list rate above GPT-6 Sol and below GPT-6 Astra. Send gpt-5.6-sol when an existing client already pins that ID.

OpenAI
GPT-5.6 Sol
OpenAI
−90%
Model ID
gpt-5.6-sol
Context window
1.1M
Vendor
OpenAI
Modalities
ChatReasoningCodeVision
List pricecorouter
Input / Mtok$5.00$0.500
Output / Mtok$30.00$3.00
Cache write / Mtok$6.25$0.625
Cached input / Mtok$0.500$0.050

Prices in USD per million tokens, verified against billing on 2026-10-08.

Where this model fits

  • Existing gpt-5.6-sol clients you do not want to retarget
  • Long mixed-document reviews already pinned to this ID
  • Orchestration steps where this ID was the qualified choice

Estimates only. Actual billing depends on your real token counts, cache hit rate, and the prices in effect at request time.

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