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Step 5 Preview

Preview

stepfun/step-5-preview

Step 5 Preview is StepFun’s preview model for coding and professional knowledge tasks. It accepts text, images and video, generates text, and supports a one-million-token context window with up to 64,000 output tokens.

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Context window
1M
Input
Image · Text · Video
Output
Text
Released
2026-09-20
Max output
64K
Model parameters
600B
Active parameters
27B

Pricing

IN

¥7.00

CNY / 1,000,000 token

Cache read

¥0.35 – ¥0.70

CNY / 1,000,000 token

¥0.35 · CNY/1M tokens; all users before 2026-10-14 00:30 Asia/Shanghai, and grandfathered users who used the pay-as-you-go API before that time thereafter

¥0.70 · CNY/1M tokens; effective from 2026-10-14 00:30 Asia/Shanghai for users who had not called the pay-as-you-go API before that time

OUT

¥20.00

CNY / 1,000,000 token

Performance

Overall capability

57.0/100

Coding
59.6
Reasoning
50.2
Professional work
58.6
Knowledge & language
59.7
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Providers

No providers found

ModelRegistry · Catalog updated 2026-11-05