---
title: "JieYueXingChen Step 3.5 Flash went live and topped the OpenRouter Trending list within 2 days"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/274779520.md"
description: "The open-source Agent base model Step 3.5 Flash launched on February 4th and topped the Trending list on the OpenRouter platform within just two days. This list is based on the model call volume from global developers and users, reflecting the model's popularity and market acceptance in practical applications"
datetime: "2026-02-04T08:26:54.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/274779520.md)
  - [en](https://longbridge.com/en/news/274779520.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/274779520.md)
---

# JieYueXingChen Step 3.5 Flash went live and topped the OpenRouter Trending list within 2 days

On February 4th, the Step 3.5 Flash model of the JieYue XingChen open-source Agent base was successfully launched and topped the Trending list on the OpenRouter platform just two days after its release. The rankings on this list are derived from data from the globally recognized large model aggregation platform OpenRouter, based on the actual model usage by developers and users worldwide, intuitively reflecting the model's popularity and market acceptance in real application scenarios

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