# OpenRouter offers StepFun's Step 5 Preview for extended agent tasks

_Published Thursday, October 8, 2026 at 1:58 PM EDT · AI · Latest · Tier 2 — Notable_

![OpenRouter offers StepFun's Step 5 Preview for extended agent tasks — Primary](https://openrouter.ai/en-US/stepfun/step-5-preview/opengraph-image-vc0va0?a23ff456f1113931)

OpenRouter offers StepFun's Step 5 Preview, a model designed to use tools and refine results over multiple steps across large codebases and documents. Its sparse mixture-of-experts architecture activates 27B of its 600B total parameters for processing.

The listing positions the preview for software engineering and professional knowledge work, particularly finance. OpenRouter can route requests to another healthy provider after an upstream error when the user's request filters permit it.

## Sources

- [OpenRouter](https://openrouter.ai/stepfun/step-5-preview)

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Canonical: https://techandbusiness.org/newswire/hI89KryvcMaiEzFHXX-9bg
Published: 2026-10-08T17:58:22.884Z
Story chronology: 2026-10-08T16:20:20.000Z
Retrieved: 2026-10-08T20:42:16.495Z
Publisher: Tech & Business (techandbusiness.org)