What is the cheapest StepFun model?

Step 3.5 Flash, at $0.1 per million input tokens and $0.3 per million output tokens.

How much does Step 3.7 Flash cost?

$0.2 per million input tokens and $1.15 per million output tokens at list price.

How many StepFun models are available through the API?

2 are listed on OpenRouter right now, 2 of them paid.

Live · refreshed hourly

StepFun API pricing

Every StepFun model available through OpenRouter, at StepFun's list price per million tokens.

Newest

Step 3.7 Flash

$0.2 in · $1.15 out

Cheapest

Step 3.5 Flash

$0.1 in · $0.3 out

Most expensive

Step 3.7 Flash

$0.2 in · $1.15 out

All StepFun models and prices

Model	Input / 1M	Output / 1M	Blended 3:1	Context
Step 3.7 Flash	$0.2	$1.15	$0.438	262K
Step 3.5 Flash	$0.1	$0.3	$0.15	262K

Per million tokens, list price. Newest first.

Where to buy StepFun API credits for less

StepFun models cost the same per token wherever they're billed through OpenRouter. The credits don't. Live quotes for $100 of usage:

#	Where you buy	You payYou pay for $100.00 of usage	vs list price	Price source
1	OrbioCardCheapest right now Credits from a discount book, plus a 5% platform fee and card processing, both included in the quote.	$85.10 incl. $2.60 card processing	-14.9%	live quote
2	smaaartCard Credits from a discount book, plus a 5% platform fee on face value. Card processing and taxes shown at checkout.	$95.00 + card processing and tax at checkout (not in this number)	-5.0%	live quote
3	Direct from the labCard Prepaid credits at face value (OpenAI, Anthropic, Google…). Taxes may apply.	$100.00 no top-up fee	list price	face value
4	OpenRouterCrypto 5% on crypto purchases. No markup on model prices.	$105.00 fees included	+5.0%	published fee
5	OpenRouterCard 5.5% on card purchases, $0.80 minimum. No markup on model prices.	$105.50 fees included	+5.5%	published fee

Disclosure: this site is run by the team behind smaaart, one of the options compared. Tables are ranked by price only, from live quotes and published fees, including when smaaart isn't first. How we compare