Vercel added OpenAI's GPT-6 Sol and Luna to AI Gateway, giving applications access to both through its shared model API. The announcement positions Sol for sustained coding and more demanding professional tasks, and Luna for lower-cost, high-volume work.
The integration matters operationally: applications can call either model while keeping Gateway's usage tracking, routing, retries and failover configuration in the same system. The announcement supplies access and intended use cases; it does not compare the two models on a particular application's workload.
Key takeaways · AI-distilled
On AI Gateway the models are openai/gpt-6-sol and openai/gpt-6-luna, callable through the AI SDK, the OpenAI-compatible Chat Completions and Responses APIs, and coding agents connected to the gateway.
To route a coding AI agentAn AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.Full definition → through the gateway, Vercel says to install the latest CLI (npm i -g vercel@latest) and run vercel ai-gateway setup, then pick Sol for longer, demanding coding work or Luna when throughput is the priority.
Vercel says both models cost less than GPT-6 Astra and, compared with their GPT-5.6 counterparts, are less likely to make misleading claims about work completed during coding tasks.
Terms in this piece · Glossary
AI agent — An AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.
