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Stepfun ai
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Models (1)
Stepfun-ai
Free Endpoint
Step 5 Preview
Preview of StepFun's Step 5: ~600B-total / 27B-active multimodal MoE (text and image in, text out) with 1M context, reasoning and tool calling, served in NVFP4.
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Blueprints
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GPUs
Docs
Multimodal
+6
Reasoning
Chat
Text-to-Text
Image-to-Text
Large Language Models
Tool Use
763K
763K API calls in the last 30 days
20d
Last updated on October 15, 2026