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stepfun-aiReleased Sep 18

Step-5-Preview

600B total and 27B active parameters; accepts images and video, with FP8 and BF16 weights for deployment.

1M contextImage inputVideo input

AA IntelligenceEffort not specified43.73 LiveBenchEffort: max · single run · equal mean of 7 suites62.01%

$1.00in$2.70out/ 1M tokens · USDStepFun · via OpenRouterstepfun/fp8 · quantization=fp8

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stepfunListed May 23

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…

262.1K contextImage inputVideo inputNo reported score

No reported score

$0.20in$1.15out/ 1M tokens · USDStepFun · via OpenRouterstepfun/fp8 · quantization=fp8

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SAStep-5-Preview

STStepFun: Step 3.7 Flash

Step-5-Preview

StepFun: Step 3.7 Flash