StepFun: Step 3.7 Flash

stepfun/step-3.7-flash

Step 3.7 Flash is StepFun's latest high-efficiency multimodal Mixture-of-Experts model. It pairs a 196B-parameter language backbone with a vision encoder for native image and video understanding, activating roughly 11B parameters per token. The model supports a 256K context window and exposes selectable reasoning levels (high/medium/low), letting callers trade off speed, cost, and depth of reasoning. Designed for coding, agentic workflows, structured outputs, and long-context productivity tasks.

Model specifications

Input
text, image, video
Output
text
Context
256,000 tokens
Max output
256,000 tokens
Input price
$0.2 / 1M tokens
Output price
.15 / 1M tokens
Released
2026-05-29

Capabilities

  • Streaming
  • Function calling
  • Vision
  • JSON mode
  • Playground

Provider pricing, discounts and data privacy

Compare effective provider prices, published discounts, regions, retention policies, training use, compliance, and privacy links by service tier.

Standard service tier

1 available provider · tier input average $0.2 / 1M tokens · tier output average .15 / 1M tokens

StepFun

Tier: Standard

Pricing
Input
$0.2 / 1M tokens
Output
.15 / 1M tokens
Cache read
$0.04 / 1M tokens

No provider discount is currently published.

Data privacy and compliance
Zero data retention
No
Data retention
Unknown retention
Used for training
Yes
Data collection
Moderated
No
GDPR compliant
No
HIPAA compliant
No
SOC 2 certified
No
BYOK supported
No

Privacy policy · Terms · Official website · Documentation

Frequently asked questions

What is StepFun: Step 3.7 Flash?
Step 3.7 Flash is StepFun's latest high-efficiency multimodal Mixture-of-Experts model. It pairs a 196B-parameter language backbone with a vision encoder for native image and video understanding, activating roughly 11B parameters per token. The model supports a 256K context window and exposes selectable reasoning levels (high/medium/low), letting callers trade off speed, cost, and depth of reasoning. Designed for coding, agentic workflows, structured outputs, and long-context productivity tasks.
How much does StepFun: Step 3.7 Flash cost?
Input costs start at $0.2 / 1M tokens and output costs start at .15 / 1M tokens. Provider-level prices vary by service tier.
What is the context length of StepFun: Step 3.7 Flash?
StepFun: Step 3.7 Flash supports a 256,000 token context window and up to 256,000 output tokens.
What capabilities does StepFun: Step 3.7 Flash support?
StepFun: Step 3.7 Flash supports Streaming, Function calling, Vision, JSON mode, Playground.
Which providers offer StepFun: Step 3.7 Flash?
StepFun: Step 3.7 Flash is available from StepFun.
How do providers handle data privacy for StepFun: Step 3.7 Flash?
1 of 1 providers report that customer data is not used for training, and 0 offer zero-data-retention routing. Retention, compliance, and privacy-policy links are listed per provider.

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