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by Stepfun

StepFun: Step 3.7 Flash.

multimodal open weights 256K ctx
Cheapest input
$0.2/M
on DeepInfra
Cheapest output
$1.15/M
on DeepInfra
Hosted equiv.
~$0.41/hr
@ 100 tok/s on DeepInfra

Step 3.7 Flash is StepFun's latest high-efficiency multimodal Mixture-of-Experts model. It pairs a 196B-parameter language backbone with a vision encoder for native image and video understanding, activating roughly 11B p

Where to use it

Cheapest hosted endpoints.

Provider Access $/M in $/M out
DeepInfra hosted inference $0.2 $1.15 Launch ↗
OpenRouter api aggregator $0.2 $1.15 Launch ↗
Sources

Official references.

Hugging Face ↗
FAQ

Frequently asked.

How do I run StepFun: Step 3.7 Flash?
StepFun: Step 3.7 Flash is open-weight, so you can self-host on rented GPUs. See the Run It Yourself tab for GPU configurations + cost estimates, or use one of the hosted inference providers listed on this page.
Where can I access StepFun: Step 3.7 Flash?
StepFun: Step 3.7 Flash is available via DeepInfra, OpenRouter. Each access option lists its own pricing (per million tokens or hourly hosting).
How much does it cost to run StepFun: Step 3.7 Flash?
API pricing starts at $0.2/M input tokens and $1.15/M output tokens. Self-hosting cost depends on the GPU you rent — see the Run It Yourself tab.
Is StepFun: Step 3.7 Flash open-source or proprietary?
StepFun: Step 3.7 Flash is open-weight under the license. You can download and self-host it.