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Baidu LLM Big Open weights

ERNIE-5.5-Flash-Base

9 days since Baidu announced it ·

ERNIE-5.5-Flash-Base is an open-weights LLM from Baidu, announced 5 Nov 2026. Its context window is 1M tokens. It has 280B parameters.

Input
—
per 1M tokens
Cache write
—
per 1M tokens
Cache read
—
per 1M tokens
Output
—
per 1M tokens
Context window
1M
tokens
Parameters
280B
total

No price on the lab’s own pages.

Our coverage

1 story
  1. Baidu releases ERNIE 5.5 Flash base weights

Baidu · Big · ERNIE

open weights
  1. ERNIE-5.5-Flash-Base

More from Baidu

All models
  1. ERNIE 5.5 Flash Preview
  2. ERNIE 5.1
  3. ERNIE-Image-Turbo
  4. ERNIE-Image

Facts last updated , from Baidu’s own pages.