StepFun Step 5 Preview 1M Context MoE Available on OpenRouter
October 8, 2026
StepFun's Step 5 Preview, a Mixture-of-Experts model featuring a 1 million token context window, is now accessible via the OpenRouter API. This expands long-context capabilities for developers using MoE architectures.
HOW THIS AFFECTS YOU
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builderYou can now integrate 1M context windows into your applications via OpenRouter.
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founderYou have access to new long-context MoE alternatives to existing frontier models.