GPT 5.6 now available on AI Gateway with Sol, Terra, and Luna models
GPT 5.6 from OpenAI is now available on Vercel's AI Gateway in limited preview with three models: Sol (most capable), Terra (balanced, half the cost), and Luna (fastest, most affordable). All three are stronger at agentic work and more token-efficient than the previous generation.
GPT 5.6 is now available on in three models: Sol, Terra, and Luna.AI Gateway
GPT 5.6 from OpenAI is now available on AI Gateway in a limited preview, across three models: Sol, Terra, and Luna. All three are stronger at agentic work across coding, biology, and cybersecurity, and are more token-efficient than the previous generation.
To use GPT 5.6, set to one of the above slugs in the :modelAI SDK
You can also set to switch to GPT 5.6 from other gateway models without touching your code.routing rules
AI Gateway provides a unified API for calling models, tracking usage and cost, and configuring retries, failover, and performance optimizations for higher-than-provider uptime. It includes built-in , , , , and more.custom reportingZero Data Retention supportbudgets for API keysrouting rules
AI Gateway reflects provider pricing with no markup and does not charge a platform fee on inference, including on (BYOK) requests.Bring Your Own Key
Try GPT 5.6 in the .model playground
(): the flagship, and the most capable of the three.Sol
openai/gpt-5.6-sol(): a balanced model for everyday work, with performance comparable to the previous generation at half the cost.Terra
openai/gpt-5.6-terra(): a fast, affordable model with strong capability at the lowest cost in the series.Luna
openai/gpt-5.6-luna
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