Step 5 Preview, a 1M-context MoE from StepFun, shows up on OpenRouter
Summary
StepFun's Step 5 Preview, a mixture-of-experts model with a 1M-token context window, has been listed on OpenRouter for API access, making it available to developers across providers.
View Cached Full Text
Cached at: 10/08/26, 06:00 PM
Similar Articles
@omarsar0: Step 5 Preview from @StepFun_ai hit #1 on OpenRouter Trending, a day after launch. It's available in Kilo Code, Cline, …
StepFun 的 Step 5 Preview 模型发布仅一天便登上 OpenRouter 热榜第一，支持 1M 上下文与输出、600B 稀疏 MoE 架构（27B 激活参数），主打编程代理与前端生成任务，将于 10 月 15 日开放权重。
@NousResearch: Step 5 Preview from @StepFun_ai is free on Nous Portal for the next week 600B total / 27B active MoE, 1M context, with …
StepFun's Step 5 Preview (600B total / 27B active MoE with 1M context and vision) is free on Nous Portal for a week, scoring 33.89 on the Hermes Index — tied with GPT-6 Luna.
@10xmylife: The leap-forward new model Step 5 Preview is now available on OpenRouter
StepFun 宣布旗舰级新模型 Step 5 Preview 上线 OpenRouter，首周免费提供访问，面向 agentic 与专业工作场景，任务成本显著更低。
@svpino: This pareto-26.10-preview model is pretty cool. It does something I haven't seen before: It basically combines multiple…
OpenRouter released Pareto 26.10 Preview from TheUnbiasedCo, a multimodal composite model that internally runs several models, evaluates their answers, and returns the best one via a single API response at $0.80/M input and $3.20/M output with 1M context and tool calling.
@omarsar0: StepFun’s new Step 5 Preview model is impressive! Had a chance to test it early. I've been testing it as a coding agent…
StepFun's new Step 5 Preview model is tested as a coding agent, demonstrating competitive performance with models like GLM 5.3 and excelling in long-horizon tasks due to its effective stopping behavior.