The GPT-5 family of models, released today, is now available through AI Gateway and in production on v0.dev. Thanks to OpenAI, Vercel has been testing these models over the past few weeks in v0, Next.js, AI SDK, and Vercel Sandbox.
From our testing, GPT-5 is noticeably better at frontend design than previous models. It generates polished, balanced UIs with clean, composable code. Internally, we’ve already started using GPT-5 for Vercel's in-dashboard Agent and for v0.dev/gpt-5. GPT-5 shows strong performance in agent-based workflows. We have been impressed with it's long-context reasoning and ability to handle multiple tools in parallel have been especially effective in powering Vercel Agent.