Step 5 Preview now available on AI Gateway
StepFun's Step 5 Preview model is now available on Vercel's AI Gateway, supporting text and image input with a 1M-token context window optimized for agentic coding, professional knowledge work, and financial analysis. The model can be accessed via the unified AI Gateway API for tracking usage, cost management, and performance optimization.
, StepFun's flagship model, is now available on . 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 PreviewAI Gateway
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 as the model name:stepfun/step-5-preview
For other coding agents such as Claude Code, Codex, Cursor, and more, install the latest Vercel CLI and run setup:
Then select in the agent. See the for details.stepfun/step-5-previewcoding agents guide
Try Step 5 Preview in the .model playground
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
You can view available on AI Gateway.all language models
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