Step 5 Preview

Step 5 Preview

Developer	StepFun
Release date	September 16, 2026
Family	Step
Generation	Step 5
Level
Context window	1M tokens
Max output	64K tokens
Input	Text, image, video
Output	Text
Weights	Closed
Website	stepfun.com
Links	Model card Docs Hugging Face

Part of a series on

input: $1.00
cached: $0.10
output: $2.70
Context: 1Mtokens
Released: 1mo ago
Size: 604Bparameters

Specifications

Model

Developer: StepFun
Family: Step Step 5
Type: Language model
Released: September 16, 2026
Model ID: stepfun/step-5-preview

Capabilities

Input → output: Text, image, video → Text
Max output: 64K tokens
Tokenizer: Other

Weights

Openness: Closed
Hugging Face: stepfun-ai/Step-5-Preview

Sources:models.devOpenRouter

Metadata synced Nov 10, 2026, 5:02 AM UTC

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