GPT-5.6 Sol pricing drops on AI Gateway, and 50% discount still applies
OpenAI reduced GPT-5.6 Sol pricing by 20% for input tokens and 33% for output tokens, effective immediately. Vercel’s AI Gateway continues offering a 50% discount on the new list price through September 18, 2025.
OpenAI announced a reduction in the list pricing for its GPT-5.6 Sol model, lowering input token costs by 20% and output token costs by one-third. The changes apply uniformly across all pricing tiers for requests up to 272,000 tokens, including cached tokens and long-context requests exceeding this threshold. The updated rates are now available on OpenAI’s pricing page, with no adjustments required for existing billing integrations.
Vercel’s AI Gateway will automatically apply a 50% discount to the new list price for GPT-5.6 Sol through September 18, 2025. This discount applies to all tiers and is calculated against the reduced pricing structure. Users billed through AI Gateway will see the adjusted rates reflected without additional configuration, while BYOK (Bring Your Own Key) requests will continue billing at the provider’s standard rates.
The model ID for GPT-5.6 Sol remains unchanged as openai/gpt-5.6-sol, ensuring existing requests transition seamlessly to the new pricing without code modifications. The model supports text, image, and PDF inputs, features a long context window, and dynamically adjusts reasoning effort based on problem complexity. Vercel provides guidance for integrating Sol into coding agents, including setup instructions for tools like Claude Code, Codex, and Cursor.
Developers can test GPT-5.6 Sol in Vercel’s AI Gateway playground or explore other language models through the platform’s interface. The updated pricing and discount apply immediately, with no changes required to existing API calls or agent configurations. The announcement follows OpenAI’s recent adjustments to model pricing and aligns with Vercel’s ongoing efforts to streamline AI model access for developers.