Workers Cache Demo

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Stepfun

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stepfun/step-3.5-flash-2603

Open weights

Step 3.5 Flash 2603

StepFun flash model for efficient multimodal reasoning, coding, and tool use

This model's cache

This model page returns the exact headers below. The page and /api/models/stepfun--step-3.5-flash-2603 share the model:stepfun--step-3.5-flash-2603 tag, so invalidation stays scoped to this model.

Cache key/models/stepfun--step-3.5-flash-2603

Cache-Controlpublic, max-age=300, stale-while-revalidate=3600

Cache-Tagcatalogmodel:stepfun--step-3.5-flash-2603

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-3.5-flash-2603',
  }),
})

Invalidate this cache tag

await ctx.cache.purge({ tags: ['model:stepfun--step-3.5-flash-2603'] })

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

ReasoningTool callingTemperature control

Released: Apr 2, 2026
Last updated: Apr 2, 2026
Context window: 256K tokens
Max output: 256K tokens
Open weights: Yes
Family: —

Starts at

$0.1

per 1M input tokens

Output

$0.3

Sellers

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

OutputText

Provider shelf

Where to get Step 3.5 Flash 2603

Sorted by lowest input price

Provider	Input / 1M	Output / 1M	Context
StepFun step-3.5-flash-2603	$0.1	$0.3	256K	Docs