StepFun: Step 3.5 Flash

openrouter.ai

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....

Description

Specs

Type	Model
Section	Models & platforms / text->text
Pricing	paid (от $0.1/mo)
Platform	Self-hosted
Systems	api, python, self-hosted
Hosting	cloud
Site language	en
Vendor	Stepfun
Launched	2026-01-29

Can do

Platforms

api python self-hosted

Found in sources

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