StepFun

Direct

StepFun's open platform providing access to the Step family of large language models with strong reasoning and agentic capabilities.

Provider Info

"API Env Var" STEPFUN_API_KEY

"Rate Limits" Varies by plan

Step 3.5 Flash

Step 3.5

Step 3

Step 2

Free

$0/mo

Limited requests, Basic models

Step 3.5 Flash · Community support

Flash Mini

$5.83/mo

~1,500 requests, 5 hours compute

All models · Priority access

Pay-as-you-go

$0/mo

Step 3.5 Flash: $0.10/1M input, $0.30/1M output

All models · Token-based billing

"Free Tier Available"

Free tier with limited requests — No credit card required