Base model

Step 3.5 Flash

Name: Step 3.5 Flash
Brand: StepFun
Availability: InStock

from $0.09 at 13 providers

stepfun/step-3.5-flash · 13 providers · Text models ·

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Found 14

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The offers of the current filter, current prices in USD.

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The same as an API for bots (format=json|csv|yaml, limit, offset):

https://airatecard.com/export?format=json&model=stepfun%2Fstep-3.5-flash

API parameters and a form

Model	Variant	Provider	Input, $	Output, $	Your cost/mo, $	Subscription, $/mo	Region	Context	Max output	Accepts	Last checked
= Step 3.5 Flash×		Provider aihubmix 1 deepinfra 1 edenai 1 empiriolabs 1 huggingface 1 kilo 1 openrouter 1 siliconflow 1 siliconflow-cn 1 stepfun 1 stepfun-ai 1 trustedrouter 2 zenmux 1				Pricing pay per use 14	Region US 1			Input text 11	Status Active 14
Step 3.5 Flash Step 3.5 Flash		deepinfra ↗	$0.09	$0.30	—			262K	256K	text	4 Nov 12:00
Step 3.5 Flash Step 3.5 Flash	via DeepInfra	edenai ↗	$0.09	$0.30	—		US	262K	256K	text	4 Nov 12:00
Step 3.5 Flash Step 3.5 Flash		empiriolabs ↗	$0.10	$0.30	—			262K	131K	text	4 Nov 12:00
Step 3.5 Flash Step 3.5 Flash		huggingface ↗	$0.10	$0.30	—			262K	256K	text	4 Nov 12:00
StepFun: Step 3.5 Flash Step 3.5 Flash		kilo ↗	$0.10	$0.30	—			262K	66K	text	4 Nov 12:00
StepFun: Step 3.5 Flash Step 3.5 Flash		openrouter ↗	$0.10	$0.30	—			262K	66K	text	4 Nov 12:00
stepfun-ai/Step-3.5-Flash Step 3.5 Flash		siliconflow ↗	$0.10	$0.30	—			262K	262K	text	4 Nov 12:26
Step 3.5 Flash Step 3.5 Flash		stepfun-ai ↗	$0.10	$0.30	—			256K	256K	text	4 Nov 12:00
Step 3.5 Flash Step 3.5 Flash		zenmux ↗	$0.10	$0.30	—			256K	64K	text	4 Nov 12:00
stepfun-ai/Step-3.5-Flash Step 3.5 Flash		siliconflow-cn ↗	$0.10	$0.31	—			262K	262K	text	4 Nov 12:26
Step 3.5 Flash Step 3.5 Flash		stepfun ↗	$0.10	$0.31	—			256K	256K	text	4 Nov 12:00
Step 3.5 Flash Step 3.5 Flash	via Featherless AI	trustedrouter ↗	$0.11	$0.32	—			256K	256K	text	4 Nov 12:00
StepFun: Step 3.5 Flash Step 3.5 Flash		trustedrouter ↗	$0.11	$0.32	—			262K	256K	text	4 Nov 12:00
Step 3.5 Flash Step 3.5 Flash		aihubmix ↗	$0.11	$0.33	—			256K	256K	text	4 Nov 12:00

Ranges in one field: "from-to" - "0.5-3", "-3" (up to), "128k-" (from); a colon works too. Several ticked values of one column are ORed, columns are ANDed.

Input price history, $/1M

Latest: minimum $0.09, median $0.10 (Nov 4, 2026)

The STEP family - base models: 24

About the model: cost of your workload, questions, comparisons, citation

Cost of my workload → in the Tools tab: every provider of this model, cheapest first

Frequently asked questions

How much does Step 3.5 Flash API cost?

From $0.09 input and $0.30 output per 1M tokens, at deepinfra.

Which provider offers Step 3.5 Flash cheapest?

deepinfra offers the lowest price, $0.09 per 1M tokens, among 13 providers.

What is the context window of Step 3.5 Flash?

262K tokens.

Where is Step 3.5 Flash available?

Available in: US.

Compare

vs DeepSeek V4 Pro vs Kimi K2.6 vs Step 3.7 Flash

Source: AI Rate Card, https://airatecard.com/en/model/stepfun/step-3.5-flash, prices checked 2026-11-04