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Step 3.7 Flash

stepfun/step-3.7-flash
StepFun (China)TextOpen weightsReasoningTool callStructured output
Compare 20 providers

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

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...

Context

256K

256,000 tokens

Max output

256K

256,000 tokens

Input

$0.20

per 1M tokens

Output

$1.21

per 1M tokens

Providers

20

22 listings

Intelligence

19.5

Intelligence Index

Pricing

USD per 1M tokens · listed by StepFun (China)

Token typeStandard
Input$0.20
Output$1.21
Cache read$0.04

Lowest input price across providers: Free.

Capabilities

ReasoningYes

Effort: low, medium, high

Tool callYes
Structured outputYes
TemperatureYes
AttachmentsYes
Interleaved reasoningYes

Field: reasoning_content

Open weightsYes
ModeratedNo

Input

TextImageVideo

Output

Text

Benchmarks

Published scores and Design Arena Elo

Design Arena categoryEloWin rateArena rank
Website1,19543.9%#65
Code1,18042.0%#69
UI component1,17542.0%#67
Data viz1,17242.9%#72
Game dev1,15637.8%#74
ASCII art1,15045.0%#41
3D1,12639.9%#81
SVG1,07936.8%#68

Rankings

Position on each OneAtlas leaderboard

Providers · 20

22 listings

StepFun (China)NanoGPTLLM GatewayVercel AI GatewayKilo GatewayEden AIDevPass (LLM Gateway)RequestyAIHubMixZenMuxNovita AIHugging FaceDeep InfraCommandCodeKenariEmpirioLabs AIUnoRouterStepFun (Global)StepFun Step Plan (China)StepFun Step Plan (Global)
ProviderModel IDContextInput limitOutputInput $Output $Reasoning $Cache readCache writeAudio inAudio outReasoningToolsStructuredTemp.Updated
AIHubMixstep-3.7-flash256K256K256K$0.22$1.32—$0.04———YesYesUnknownYesMay 29, 2026
CommandCodestepfun/Step-3.7-Flash256K256K256K$0.20$1.15—$0.04———YesYesUnknownYesMay 29, 2026
Deep Infrastepfun-ai/Step-3.7-Flash262K—256K$0.20$1.15—$0.04———YesYesUnknownYesMay 29, 2026
DevPass (LLM Gateway)step-3.7-flash262K—256K$0.20$1.15—$0.04———YesYesNoYesMay 29, 2026
Eden AIflexai/Step-3.7-Flash262K—256K$0.20$1.15—$0.03———YesYesYesYesMay 29, 2026
Eden AIdeepinfra/stepfun-ai/Step-3.7-Flash262K—256K$0.20$1.15—$0.04———YesYesYesYesMay 29, 2026
EmpirioLabs AIstep-3-7-flash256K256K131K$0.20$1.15—$0.04———YesYesYesYesMay 29, 2026
Hugging Facestepfun-ai/Step-3.7-Flash262K—256K$0.20$1.15—————YesYesUnknownYesMay 29, 2026
Kenaristep-3-7-flash:free256K256K256KFreeFree—————YesYesUnknownYesMay 29, 2026
Kenaristep-3-7-flash256K256K256K$0.24$1.37—$0.05———YesYesUnknownYesMay 29, 2026
Kilo Gatewaystepfun/step-3.7-flash256K256K230K$0.20$1.15—$0.04———YesYesYesYesMay 29, 2026
LLM Gatewaynovita/step-3.7-flash262K—256K$0.20$1.15—$0.04———YesYesNoYesMay 29, 2026
NanoGPTstepfun/step-3.7-flash:thinking262K262K256K$0.20$1.15—$0.04———YesYesYesYesMay 29, 2026
Novita AIstepfun/step-3.7-flash262K256K256K$0.20$1.15—$0.04———YesYesYesYesMay 29, 2026
Requestystep-3.7-flash262K—256K$0.20$1.15—$0.04———YesYesYesYesMay 29, 2026
StepFun (China)step-3.7-flash256K256K256K$0.20$1.21—$0.04———YesYesYesYesMay 29, 2026
StepFun (Global)step-3.7-flash256K256K256K$0.20$1.15—$0.04———YesYesYesYesMay 29, 2026
StepFun Step Plan (China)step-3.7-flash256K256K256K———————YesYesYesYesMay 29, 2026
StepFun Step Plan (Global)step-3.7-flash256K256K256K———————YesYesUnknownYesMay 29, 2026
UnoRouterstep-3.7-flash:free256K256K256KFreeFree—————YesYesUnknownYesMay 29, 2026
Vercel AI Gatewaystepfun/step-3.7-flash256K256K256K$0.20$1.15—$0.04———YesYesUnknownYesMay 29, 2026
ZenMuxstepfun/step-3.7-flash256K256K256K$0.20$1.15—$0.04———YesYesUnknownYesMay 29, 2026