GPT-5.6 Sol is 50% off on AI Gateway for the next month

OpenAI's GPT-5.6 Sol is 50% off on Vercel's AI Gateway through September 18, reducing input prices from $5.00 to $2.50 per million tokens and output from $30.00 to $15.00 per million tokens on the Default tier. The discount applies to all token types, tiers, regions, and modes for requests billed through AI Gateway on the OpenAI provider, with no code change required.

GPT-5.6 Sol https://vercel.com/ai-gateway/models/gpt-5.6-sol , the flagship of OpenAI's GPT-5.6 series, is 50% off on AI Gateway through September 18. The discount applies on the OpenAI provider to all token types, tiers, regions, and modes, and it is available only on requests running directly through AI Gateway not BYOK . Service tier | New price per M tokens input / output | Original price per M tokens input / output | |---|---|---| Default | $2.50 / $15.00 | $5.00 / $30.00 | Flex | $1.25 / $7.50 | $2.50 / $15.00 | Priority fast mode | $5.00 / $30.00 | $10.00 / $60.00 | The discount applies on the same terms everywhere else the model is priced: across every service tier, including fast mode, and to cached tokens, cache writes, long-context requests, and different regions. It covers requests billed through AI Gateway on the OpenAI provider. BYOK https://vercel.com/docs/ai-gateway/authentication-and-byok/byok requests run on your own provider accounts and bill at whatever rate you have with them. The model ID is unchanged, so requests you already send pick up the discounted rate with no code change: Sol takes a reasoning effort up to max for the hardest problems, accepts text, image, and PDF input, and carries a long context window. To use it in a coding agent https://vercel.com/docs/ai-gateway/coding-agents , run vercel ai-gateway coding-agents setup to connect Claude Code, Codex, OpenCode, or Pi, then select openai/gpt-5.6-sol inside the agent. The 50% discount will apply there. Create an API key https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai-gateway&title=AI+Gateway in the AI Gateway section of your dashboard, or try the model in the browser first from its playground page https://vercel.com/ai-gateway/models/gpt-5.6-sol .