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Qiniu

Stepfun/Step-3.5 Flash API

Qiniu
About

Integrate multimodal vision capabilities using Stepfun/Step-3.5 Flash, designed to process both text and images seamlessly. This model delivers available completely free of charge. Access Stepfun/Step-3.5 Flash via the Qiniu API with up to 4K output tokens.

Capabilities

Input Modalities

textimage

Output Modalities

text
Reasoning
No
Structured Output
No
Tool Use
No
WeightsClosed
Temperature
Adjustable
Attachment
Supported
Limits
Context Window
64K

Tokens

Input Limit
64K

Tokens

Max Output
4K

Tokens

Pricing

Standard (per 1M tokens)

Input
Free
Output
Free
Frequently Asked Questions

Stepfun/Step-3.5 Flash by Qiniu costs Free per 1M input tokens and Free per 1M output tokens.

Model Details
ID
stepfun/step-3.5-flash
Provider
Qiniu
Family
Release Date
Feb 2, 2026
Knowledge Cutoff
N/A
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
QINIU_API_KEY
API Base URL
https://api.qnaigc.com/v1
Documentation