Skip to content
Open release

StepFun releases Step 3.5 Flash

Step 3.5 Flash is StepFun's most capable open-source foundation model. Built on a sparse Mixture of Experts (MoE) architecture, it selectively activates only 11B of its 196B parameters per token....

Type
OPEN_SOURCE_RELEASE
Detection
listing
Confidence
medium
Status
Related entities
ModelStep 3.5 FlashCompanyStepFun

Primary source

OpenRouter models API · openrouter.ai/stepfun/step-3.5-flash ↗

Structured listing of 400+ hosted models: prices per token, context length, modalities, supported parameters and listing date. Prices are OpenRouter's listed prices, which usually mirror first-party pricing but can differ.