StepFun: Step 5 Preview
stepfun/step-5-preview
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...
Source: OpenRouter (live)
- Input
- $1.00
- USD per 1M tokens
- Output
- $2.70
- USD per 1M tokens
- Blended
- $1.43
- 75% in / 25% out
- Context
- 1.0M
- tokens
- Max output
- 64K
- tokens
- Modality
- text+image+video->text
Prices as listed on OpenRouter, refreshed every five minutes. Provider-direct prices may differ. Convert to your currency on the AI Tracker.
Price history
How this listing has moved
- 7-day
- -
- 30-day
- -
- 90-day
- -
First recorded 9 Oct 2026. Deltas appear once a second daily snapshot lands. See all changes on Market Movers.
Capabilities
Declared on the listing
- Tool / function calling Declared
- Reasoning controls Declared
- Structured output Declared
- InputText, Image, Video
- OutputText
Capabilities are read from the provider listing. "Not declared" means the listing does not advertise the feature, not that it is absent.
Why it costs this
Pricing context
- 1.6× median
- Market median blended price is $0.875/M across 443 priced models.
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