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free models.

Publisher

SStepFun

StepFun

Explore 1 free AI models published by StepFun. Compare capabilities, benchmarks, and the API providers offering them.

Explore 1 model

At a glance

Free models
1
API providers
2
With reasoning
1
With tool calling
1
Largest context window1M tokens

Based on models in this catalogue. Availability and free limits vary by model.

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Models by StepFun.

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S
StepFun: Step 5 Preview
StepFun

Step 5 Preview is StepFun's flagship model for agentic work, built on a sparse Mixture-of-Experts architecture (27B active / 600B total parameters). It performs strongly in software engineering and professional...

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Find a provider.

These providers offer free access to StepFun models.

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KKilo

1 free model

OOpenCode

1 free model