Modeldex
StepFun

Step 3.7 Flash

CTX256K
Reasoning · Vision · Tools
TextImageVideoInput$0.18/M
TextOutput$1.11/M

Newer StepFun flash model for faster agents, coding, and multimodal prompts

Open weightsApache 2.0910/1040
Drag to turnCard front showing

StepFunTextCommon

Step 3.7 Flash

Newer StepFun flash model for faster agents, coding, and multimodal prompts

step-3.7-flash
Type
Text
Quality
Not rated yet
Context window
256,000 tokens
Max output
256,000 tokens
Input price
$0.18 / 1M tokens
Output price
$1.11 / 1M tokens
Cache read
$0.037 / 1M tokens
Cache write
—
Parameters
201B (201,365,316,160)
Downloads
19K in the last 30 days
Likes
460
Access to weights
Open download
Released
May 29, 2026
Knowledge cutoff
Mar 2026
Takes in
Text, Image, Video
Puts out
Text
Reasoning
Yes
Tool calling
Yes
Structured output
No
File attachments
Yes
Access
Open weights
License
Apache 2.0
Rarity
Common
Set number
910/1040

License read from the model’s Hugging Face card. Specs from models.dev, downloads from Hugging Face, last changed Oct 18, 2026. Official source: platform.stepfun.ai.

How good is it?

Public leaderboard scores for Step 3.7 Flash, refreshed daily from Epoch AI and LMArena.

No public leaderboard lists Step 3.7 Flash yet. Epoch AI and LMArena cover most chat, image, and video models from the big labs; embeddings, speech, and small open models mostly go unrated.

Where to run it

22 providers sell Step 3.7 Flash through an API, and 2 Hugging Face hosts serve it. Prices are per million tokens, cheapest first.

API providers

ProviderInputOutputContext
KenariFreestep-3-7-flashFreeFree256K
NvidiaFreestepfun-ai/step-3.7-flashFreeFree256K
UnoRouterFreestep-3.7-flash:freeFreeFree256K
ZenMuxFreestepfun/step-3.7-flash-freeFreeFree256K
StepFun (China)Cheapest paidstep-3.7-flash$0.18$1.11256K
StepFun (Global)Officialstep-3.7-flash$0.18$1.11256K
Ambientstepfun/step-3.7-flash$0.19$1.14262K
CommandCodestepfun/Step-3.7-Flash$0.20$1.15256K
Deep Infrastepfun-ai/Step-3.7-Flash$0.20$1.15262K
DevPass (LLM Gateway)step-3.7-flash$0.20$1.15262K
Show 12 more providers
ProviderInputOutputContext
Eden AIflexai/Step-3.7-Flash$0.20$1.15262K
EmpirioLabs AIstep-3-7-flash$0.20$1.15256K
Kilo Gatewaystepfun/step-3.7-flash$0.20$1.15256K
LLM Gatewaynovita/step-3.7-flash$0.20$1.15262K
NanoGPTstepfun/step-3.7-flash:thinking$0.20$1.15262K
Novita AIstepfun/step-3.7-flash$0.20$1.15262K
OpenRouterstepfun/step-3.7-flash$0.20$1.15262K
Requestystep-3.7-flash$0.20$1.15262K
Vercel AI Gatewaystepfun/step-3.7-flash$0.20$1.15256K
AIHubMixstep-3.7-flash$0.22$1.32256K
StepFun Step Plan (China)step-3.7-flash——256K
StepFun Step Plan (Global)step-3.7-flash——256K

Hugging Face Inference Providers

HostInputOutputContextSpeedFirst token
DeepInfraFastestTools$0.20$1.15262K11 tok/s0.7s
Featherless—————

From models.dev and Hugging Face, checked daily. Resellers’ listings can lag behind their price pages, so confirm with the provider before you commit.

Face off

Current text models from other labs at a similar output price.

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