GPT-5.6 Sol pricing drops on AI Gateway, and 50% discount still applies
OpenAI cuts GPT-5.6 Sol pricing 20-33% on AI Gateway; 50% discount extends through September.
Why it matters
Pricing reduction on a frontier reasoning model makes it more accessible for production workloads via Vercel's AI Gateway, with no code changes required. Relevant for practitioners evaluating cost-per-inference on reasoning tasks.
The key facts
12 to knowGPT-5.6 Sol input pricing drops from $2.50 to $2.00 per million tokens (20% reduction) on Default tier
Output pricing drops from $15.00 to $10.00 per million tokens (33% reduction) on Default tier
50% AI Gateway discount continues through September 18, 2026, applies to new list price
Model supports up to max reasoning effort, text/image/PDF input, long context window
Pricing changes automatic; no code changes required for existing requests via model ID openai/gpt-5.6-sol
Pricing applies to requests up to 272K tokens; cached tokens, cache writes, and long-context (>272K) on same terms
GPT-5.6 Sol input pricing down 20%, output down 33% on new list price
50% AI Gateway discount applies to new lower list prices through September 18, 2026
Pricing tiers affected: Default ($2/$10 with discount from $4/$20 list), Flex ($1/$5 from $2/$10), Priority/fast mode ($4/$20 from $8/$40)
No model ID change required; existing requests auto-bill at new rate
Supports text, image, PDF input; reasoning effort up to max; 272K token tier
Available through Vercel AI Gateway and direct OpenAI account
Go to the source
Vercel Blogvercel.com
Publisher excerpt: OpenAI just lowered list pricing for . The 50% AI Gateway discount continues and applies to the new list price now through September 18th.GPT-5.6 Sol The 50% discount applies on every tier on the OpenAI provider, against the new list price. Rates are per million tokens, for requests up to 272K…