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StepFun: Step 3.7 Flash

stepfun/step-3.7-flash

32nd smartest of 180ReasoningToolsJSONVision
Use via OpenRouter ↗
Intelligence
42.6
32nd of 180
Design Elo
1232
Game Dev
Speed
76
110th fastest
Latency
1.6s
first token
Input price
$0.200
94th cheapest
Context
256K
256K max out

How it compares

Smarter than82%
of all ranked models
Faster than64%
of all ranked models
Cheaper than68%
of all ranked models

Overview

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...

Benchmarks

independent · via OpenRouter
Artificial Analysis78th percentile
Intelligence Index
42.6
Coding Index
37.1
Agentic Index
59.5
GPQA Diamond
81%
Humanity's Last Exam
20%
SciCode
40%
Tau²-Bench (agentic)
99%
Design Arena · Elo4,303 tournaments
Game Dev
1232
Website
1227
codecategories
1220
UI Component
1215
Data Viz
1214
asciiart
1211
3D
1196
svg
1121

Providers & pricing (1)

ProviderIn $/MOut $/MUptime
StepFunfp8$0.200$1.15100%

Specifications

Context window256K
Max output256K
Knowledge cutoff
Input modalitiestext, image, video
Output modalitiestext
Prompt caching
Cache read price$0.040/M
ModeratedNo

Step 3.7 Flash FAQ

How much does Step 3.7 Flash cost?

Step 3.7 Flash costs $0.200 per million input tokens and $1.15 per million output tokens via OpenRouter, making it 94th cheapest of 298 paid models.

How smart is Step 3.7 Flash?

Step 3.7 Flash scores 42.6 on the Artificial Analysis Intelligence Index, ranking 32nd of 180 benchmarked models, with a GPQA Diamond score of 81%.

How fast is Step 3.7 Flash?

Step 3.7 Flash generates around 76 tokens per second with 1.6s time-to-first-token (p50), the 110th fastest tracked model.

What is Step 3.7 Flash's context window?

Step 3.7 Flash supports a 256K-token context window and can output up to 256K tokens. It accepts text, image, video input.

Compare head-to-head