GPT-5.6 Sol
Last verified: July 20, 2026$5.00/1M input · $30.00/1M output · 1.1M context · OpenAI
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Alternatives to GPT-5.6 Sol
Pricing Details
OpenAIFlagship tier of the GPT-5.6 family, previewed June 26, 2026 to ~20 partner orgs (gated under a June 2 US frontier-model executive order). Prices identical to GPT-5.5 ($5/$30). Only tier with the max and ultra reasoning modes; ultra runs parallel subagents at the same per-token rate but spends more tokens per task. Cached input $0.50 (90% off). Terminal-Bench 2.1: 88.8% base, 91.9% ultra. Sol on Cerebras at up to 750 tok/s from July. Preview rates from third-party trackers; context window, max output, and long-context surcharge not officially published.
Input / 1M tokens
$5
Output / 1M tokens
$30
Context Window
1.1M
Max Output
128K
Price History
Launched at current price on 2026-06-26. No price changes recorded.
Frequently Asked Questions
Common questions about GPT-5.6 Sol pricing and usage
Read More About GPT-5.6 Sol
Every major LLM API now knocks about 90% off the tokens you cache. The bill you don't see coming is the fee some providers charge just to put them there.
July 19, 2026 · 8 min read
Grok 4.5 sells the cheapest token, Fable 5 sells the smartest one, and neither is the cheapest way to finish the actual job. You only see that once you stop pricing tokens and start pricing benchmark points.
July 13, 2026 · 9 min read
Grok 4.5 undercuts Opus 4.8 by two-thirds and burns fewer tokens getting there. The catches are a context window that shrank to 500K and a surcharge xAI won't put a number on.
July 10, 2026 · 8 min read