Step 5 Preview now available on AI Gateway

StepFun's flagship model Step 5 Preview is now available on Vercel's AI Gateway under the model name stepfun/step-5-preview, supporting text and image input with a 1M-token context window. Vercel said the model targets agentic coding, professional knowledge work, and financial analysis, and can be selected in coding agents such as Claude Code, Codex, and Cursor after installing the latest Vercel CLI and running setup. AI Gateway reflects provider pricing with no markup and charges no platform fee on inference, including on Bring Your Own Key requests.

Step 5 Preview https://vercel.com/ai-gateway/models/step-5-preview , StepFun's flagship model, is now available on AI Gateway https://vercel.com/ai-gateway . It's built for agentic coding, professional knowledge work, and financial analysis, from building apps and debugging code to research and analytical reports. Step 5 Preview supports text and image input with a 1M-token context window, allowing you to work with large codebases, a stack of documents, or screenshots and charts in a single request. Use stepfun/step-5-preview as the model name: For other coding agents such as Claude Code, Codex, Cursor, and more, install the latest Vercel CLI and run setup: Then select stepfun/step-5-preview in the agent. See the coding agents guide https://vercel.com/docs/ai-gateway/coding-agents for details. Try Step 5 Preview in the model playground https://vercel.com/ai-gateway/models/step-5-preview . 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 custom reporting https://vercel.com/changelog/custom-reporting-ai-gateway , Zero Data Retention support https://vercel.com/blog/zdr-on-ai-gateway , budgets for API keys https://vercel.com/docs/ai-gateway/authentication-and-byok/api-keys , routing rules https://vercel.com/docs/ai-gateway/models-and-providers/routing-rules , and more. AI Gateway reflects provider pricing with no markup and does not charge a platform fee on inference, including on Bring Your Own Key https://vercel.com/docs/ai-gateway/authentication-and-byok/byok BYOK requests. You can view all language models https://vercel.com/ai-gateway/models?type=text available on AI Gateway.