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Model spotlight

Step 3.7 Flash

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

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Core capabilities

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Step 3.7 Flash FAQ

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Step 3.7 Flash

stepfun/step-3.7-flash

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

Core specifications

Released
2026-05-29
Context window
256K
Max output
256K
Model parameters
201B
Weights
Open

Modalities

Input
ImageTextVideo
Output
Text

Identity

Version
step-3.7-flash
Knowledge cutoff
2026-03-01
License
Apache-2.0
Aliases
Step 3.7 Flash

Resources

Capabilities

AttachmentsOpen weightReasoningTemperatureTool call

Pricing

IN $0.185/M
OUT $1.11/M
Read $0.037/M

Capabilities and fit

Model summary

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

Text
AttachmentsOpen weightReasoningTemperatureTool call
Output
Text
Capabilities
5
Catalog updated
2026-08-06T01:20:56.133Z
Status

Benchmark results

BenchmarkTypeScore / rankEvaluated
SWE-Bench ProCoding56.32026-05-29T00:00:00.000Z
SWE-Bench VerifiedCoding76.52026-05-29T00:00:00.000Z
Terminal-BenchCoding59.62026-05-29T00:00:00.000Z
Humanity's Last ExamGeneral47.22026-05-29T00:00:00.000Z
BrowseCompGeneral75.82026-05-29T00:00:00.000Z
ToolathlonGeneral49.52026-05-29T00:00:00.000Z
GDPvalGeneral45.82026-05-29T00:00:00.000Z
ClawEvalGeneral67.12026-05-29T00:00:00.000Z
Artificial Analysis Coding IndexGeneral37.12026-06-15T00:00:00.000Z
SciCodeCoding402026-06-15T00:00:00.000Z
Terminal-Bench HardCoding35.62026-06-15T00:00:00.000Z

Provider coverage

ProviderInputOutputPricing
StepFun Step Plan (Global)
IN $0.185/M
OUT $1.11/M
Read $0.037/M
StepFun Step Plan (China)
IN $0.185/M
OUT $1.11/M
Read $0.037/M
Ambient
IN $0.185/M
OUT $1.11/M
Read $0.037/M
UnoRouter
IN $0.185/M
OUT $1.11/M
Read $0.037/M
ZenMux
IN $0.185/M
OUT $1.11/M
Read $0.037/M
EmpirioLabs AI
IN $0.185/M
OUT $1.11/M
Read $0.037/M
Vercel AI Gateway
IN $0.185/M
OUT $1.11/M
Read $0.037/M
OpenRouter
IN $0.185/M
OUT $1.11/M
Read $0.037/M
StepFun (Global)
IN $0.185/M
OUT $1.11/M
Read $0.037/M
StepFun (China)
IN $0.185/M
OUT $1.11/M
Read $0.037/M
Kilo Gateway
Step 3.7 Flash
IN $0.185/M
OUT $1.11/M
Read $0.037/M

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