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Step 3.5 Flash

StepCurrent
byStepFunStepFun(ai lab)
Released January 29, 2026
Context262.1K tokens
Price (In / Out)$0.10/M / $0.30/M
CategoryLarge Language Model
Max Output65.5K tokens

About Step 3.5 Flash

Step 3.5 Flash is a large language model from StepFun. Supports up to 262,144 token context window. Available from $0.10/M input tokens.

Capabilities

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Input Modalities

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Output Modalities

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Technical Details

API Identifier
stepfun/step-3.5-flash
Category
Large Language Model
Context Window
262,144 tokens
Max Output Tokens
65,536 tokens

Tags

budget-friendlylong-context

Run this model yourself

Local and cloud setup for Step 3.5 Flash, with exact configurations, sources and clear evidence limits.

Find a model for your hardware

No reviewed setup guide is available for this model yet. Explore configurations with documented support in the hardware finder.

Pricing

Token pricing for Step 3.5 Flash API usage.

Input Tokens

$0.10/M

per million tokens

Output Tokens

$0.30/M

per million tokens

Competing Models

Same pricing tier — direct alternatives to Step 3.5 Flash

Efficiency