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Step 3.5 Flash

StepCurrent
byStepFunStepFun(ai lab)
Released January 29, 2026
API DocsPlayground
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

textcode

Input Modalities

text

Output Modalities

text

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

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

Pricing Calculator

Input cost$0.10
Output cost$0.15
Estimated monthly cost$0.25

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