---
format: "aidr-story-markdown/v1"
id: "87dbdc19dc7a6b56f046f2fe1264f52b7490e1f2b10f0b7fdf413aee3158dc1b"
canonical_url: "https://aidr.today/87dbdc19?lang=en"
title: "Baidu Opens Weights for New 280B Parameter ERNIE 5.5 Flash Base Model"
lang: "en"
requested_lang: "en"
available_langs: ["en","vi"]
translation_fallback: null
fallback_fields: []
published_at: "2026-11-05T14:23:12.000Z"
category: "Models"
topics: ["llm","open-source"]
source_urls: ["https://marketbrief.now/ai/baidu-opens-weights-for-new-280b-parameter-ernie-55-flash-base-model-bf0e07ef","https://huggingnews.com/ai/baidu-opens-weights-for-new-280b-parameter-ernie-55-flash-base-model-bf0e07ef","https://the-decoder.com/baidu-releases-ernie-5-5-flash-base-with-280-billion-parameters-as-an-open-source-foundation-model/","https://www.marktechpost.com/2026/11/05/baidu-ernie-5-5-flash-base-280b-moe/"]
summary: "Baidu has released the raw weights of its ERNIE-5.5-Flash-Base model for public research, featuring 280B total parameters with 14B activated per token and a 1M token context window. The model achieved an 82.3% pass rate on the HumanEval+ benchmark and is available on Hugging Face and ModelScope, with a vLLM-ERNIE plugin supporting deployment on Nvidia GB200 and H100 hardware."
---

# Baidu Opens Weights for New 280B Parameter ERNIE 5\.5 Flash Base Model

> [Open the canonical story](<https://aidr.today/87dbdc19?lang=en>)

**Published:** 2026-11-05T14:23:12.000Z
**Category:** Models
**Topics:** llm, open\-source

## Summary

Baidu has released the raw weights of its ERNIE\-5\.5\-Flash\-Base model for public research, featuring 280B total parameters with 14B activated per token and a 1M token context window\. The model achieved an 82\.3% pass rate on the HumanEval\+ benchmark and is available on Hugging Face and ModelScope, with a vLLM\-ERNIE plugin supporting deployment on Nvidia GB200 and H100 hardware\.

## Sources

- [Story source](<https://marketbrief.now/ai/baidu-opens-weights-for-new-280b-parameter-ernie-55-flash-base-model-bf0e07ef>)
- [Story source](<https://huggingnews.com/ai/baidu-opens-weights-for-new-280b-parameter-ernie-55-flash-base-model-bf0e07ef>)
- [Story source](<https://the-decoder.com/baidu-releases-ernie-5-5-flash-base-with-280-billion-parameters-as-an-open-source-foundation-model/>)
- [Story source](<https://www.marktechpost.com/2026/11/05/baidu-ernie-5-5-flash-base-280b-moe/>)