StepFun's Step 5 Preview launches on OpenRouter at $1.00/$2.70 per million tokens, with a free week in partner tools
Overview
StepFun's Step 5 Preview is live on OpenRouter, positioned by the company as its flagship model for agentic and professional work.
OpenRouter lists it at $1.00 per million input tokens and $2.70 per million output tokens, with cache hits discounted 50% at launch to $0.05 per million.
StepFun says a week of free access is rolling out across partner tools including OpenCode, Cline, Nous Research and Kilo Code. OpenCode and Cline separately confirmed the free week in their own tools, and Cline cited strong DeepSWE coding scores ahead of Kimi K3 and GLM-5.3. The model is described as a 600B total, 27B active mixture-of-experts design with a 1M context window and text, image and video input. StepFun's background announcement says open weights arrive on October 15.
Written by AI from the articles below · updated Oct 9, 9:50 AM ET
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Developments
4 developments
- Oct 8, 1:44 PM ET · 1 articleStep 5 Preview free in Cline for one weekStepFun: Step 5 Preview free in Cline for one week, StepFun says
- Oct 8, 1:34 PM ET · 1 articleCline makes Step 5 Preview free, citing DeepSWE results ahead of Kimi K3 and GLM-5.3Cline: Cline makes Step 5 Preview free, citing strong DeepSWE coding scores
- Oct 8, 10:43 AM ET · 2 articlesStepFun makes Step 5 Preview free in OpenCode for one weekStepFun: StepFun offers Step 5 Preview free in OpenCode for one week
- Oct 8, 9:08 AM ET · 3 articlesStepFun launches Step 5 Preview on OpenRouter with a week of free accessStepFun: StepFun's Step 5 Preview is live on OpenRouter with a week of free access
Article timeline
The articles in this story. Times are ET.
StepFun@StepFun_aiStep 5 Preview free in Cline for one week, StepFun saysAIStepFun's flagship model Step 5 Preview is free to use in Cline for one week. The quoted background says it scores ahead of Kimi K3 and GLM-5.3 on DeepSWE, positioning it among the strongest open-weights coding models.
Cline@clineCline makes Step 5 Preview free, citing strong DeepSWE coding scoresAICline says Step 5 Preview is now free in its coding tool and scores ahead of Kimi K3 and GLM-5.3 on DeepSWE. The company describes it as one of the strongest open-weights coding models available. StepFun's background announcement describes Step 5 Preview as a 600B total / 27B active MoE model with 1M context and vision, and says open weights arrive on Oct 15.

StepFun@StepFun_aiStepFun offers Step 5 Preview free in OpenCode for one weekAIStepFun is offering its flagship Step 5 Preview model free in OpenCode for one week, targeting agentic and professional work. The preview supports a 1M context window, multimodal input, and zero data retention.
OpenCode@opencodeOpenCode offers Step 5 Preview free for a weekAIOpenCode is offering free access to its Step 5 Preview for one week. The announcement highlights a 1M context window, multimodal support, and zero data retention.
OpenRouter@OpenRouterStepFun's Step 5 Preview is now available on OpenRouterAIOpenRouter says StepFun's Step 5 Preview is now live on its platform, priced at $1.00 per million input tokens and $2.70 per million output tokens. Cache hits are 50% off at launch, bringing them to $0.05 per million, and a week of free access is rolling out across partners including opencode, Cline, Nous Research, and Kilo Code.
OpenRouter@OpenRouterStepFun's Step 5 Preview launches on OpenRouter as agentic flagshipAIStepFun's Step 5 Preview is now live on OpenRouter as the company's new flagship for agentic work. It uses a sparse MoE design with 27B active and 600B total parameters, a 1M context window, and accepts text, image, and video input. The post highlights strength in coding and professional knowledge work, especially finance.

StepFun@StepFun_aiPickStepFun's Step 5 Preview is live on OpenRouter with a week of free accessAIStepFun says Step 5 Preview is now available on OpenRouter, with a week of free access rolling out across OpenCode, Cline, Nous Research, Kilo Code, and other tools. The company describes it as flagship-tier intelligence for agentic and professional work at substantially lower task cost, letting users switch models without changing their workflow.

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