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Stepfun
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stepfun/step-3.7-flash

Open weights
Step 3.7 Flash

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

This model's cache

This model page returns the exact headers below. The page and /api/models/stepfun--step-3.7-flash share the model:stepfun--step-3.7-flash tag, so invalidation stays scoped to this model.

Cache key/models/stepfun--step-3.7-flash
Cache-Controlpublic, max-age=300, stale-while-revalidate=3600
Cache-Tagcatalogmodel:stepfun--step-3.7-flash

Workers Cache derives the key from this path/query, plus the Worker entrypoint and current Worker version.

export const Route = createFileRoute('/models/$modelSlug')({
  headers: () => ({
    'Cache-Control': 'public, max-age=300, stale-while-revalidate=3600',
    'Cache-Tag': 'catalog,model:stepfun--step-3.7-flash',
  }),
})

Invalidate this cache tag

await ctx.cache.purge({ tags: ['model:stepfun--step-3.7-flash'] })

Use this when one model changes and you do not want to evict the whole catalog.

ReasoningTool callingAttachmentsTemperature control
Released
May 29, 2026
Last updated
May 29, 2026
Context window
256K tokens
Max output
256K tokens
Open weights
Yes
Family

Starts at

$0.2

per 1M input tokens

Output

$1.15

Sellers

4

No cart or checkout in this MVP — pick a provider below and open their docs when you're ready to use it.

Capabilities & modalities
Reasoning
Tool calling
Structured output
Attachments
InputText, Image
OutputText
Provider shelf
Where to get Step 3.7 Flash

Sorted by lowest input price

ProviderInput / 1MOutput / 1MContext

Vercel AI Gateway

stepfun/step-3.7-flash

$0.2$1.15256KDocs

ZenMux

stepfun/step-3.7-flash

$0.2$1.15256KDocs

StepFun

step-3.7-flash

$0.2$1.15256KDocs

OpenRouter

stepfun/step-3.7-flash

$0.2$1.15256KDocs
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