Step 3.5 Flash by StepFun AI | AI model information

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Step 3.5 Flash by StepFun AI | AI model information

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Model details

Step 3.5 Flash

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StepFun AIstep-3.5-flash

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Quick Info

Provider: StepFun AI
Model key: step-3.5-flash
Release date: Jan 29, 2026

Cost

Input token cost: $0.10
Output token cost: $0.30

Limits

Input tokens: 256,000 tokens
Output tokens

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Last updated

Jun 15, 2026

Knowledge cutoff

2025-01

Input modalities

Output modalities

Capabilities

256,000 tokens

Context window

256,000 tokens