{"type":"post","id":"baidu-releases-ernie-5-5-flash-base-280b-0a8dd2","slug":"baidu-releases-ernie-5-5-flash-base-280b-0a8dd2","title":"Baidu releases ERNIE-5.5-Flash-Base: 280B MoE open weights with 14B active and 1M inference context","description":"Baidu released ERNIE-5.5-Flash-Base, an open-weight checkpoint taken at the end of pre-training.","retrieval_nugget":"Baidu released ERNIE-5.5-Flash-Base, an open-weight checkpoint taken at the end of pre-training. It combines 280 billion total parameters, 14 billion activated per token and support for 1 million-token fine-tuning and inference context. Builders can use it as a base for adaptation or training experiments without waiting for Baidu’s post-trained model.","published_at":"2026-11-05","updated_at":"2026-11-07","record_date":"2026-11-05","date_kind":"published_at","topics":["inference"],"entities":["Baidu","ERNIE-5.5-Flash-Base","SGLang","vLLM"],"related_patterns":[],"novelty_label":"new_fact","what_changed":"Baidu adds a distinct open-weight release: ERNIE-5.5-Flash-Base has 280B total parameters, 14B active, 33.5T pretraining tokens, and supports 1M-token inference context.","prior_refs":["https://newruntime.com/posts/inclusionai-releases-ling-3-1-flash-1019-an-9765f4/","https://newruntime.com/posts/stepfun-publishes-step-5-preview-open-weights-600b-5a7d50/","https://newruntime.com/posts/minimax-releases-open-weights-for-minimax-m3-1-4125a5/","https://newruntime.com/posts/inclusionai-released-ling-3-1-flash-a-560b-af9ab3/","https://newruntime.com/posts/meta-released-muse-spark-open-an-816b-total-5c27ac/"],"source_url":"https://ernie.baidu.com/release/ernie-5-5-flash-base","source_urls":["https://ernie.baidu.com/release/ernie-5-5-flash-base"],"schema_version":"newruntime-agent-readable-v0.2","stable_id":"post:baidu-releases-ernie-5-5-flash-base-280b-0a8dd2","status":"published","visuals":[],"editor":{"role":"editor","name":"Andrey Reshetnikov","profile":"https://newruntime.com/owner-profile.md","profile_json":"https://newruntime.com/owner-profile.json","same_as":["https://www.linkedin.com/in/reshetnikov1/","https://t.me/lapetuse"]},"routes":{"html":"https://newruntime.com/posts/baidu-releases-ernie-5-5-flash-base-280b-0a8dd2/","markdown":"https://newruntime.com/posts/baidu-releases-ernie-5-5-flash-base-280b-0a8dd2.md","json":"https://newruntime.com/posts/baidu-releases-ernie-5-5-flash-base-280b-0a8dd2.json"},"markdown_url":"https://newruntime.com/posts/baidu-releases-ernie-5-5-flash-base-280b-0a8dd2.md","next_reads":[{"type":"topic","path":"/topics/inference/","url":"https://newruntime.com/topics/inference/","title":"Inference","reason":"Explore the inference topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/inference.md","json_url":"https://newruntime.com/topics/inference.json"},{"type":"collection","path":"/posts/","url":"https://newruntime.com/posts/","title":"Field Notes","reason":"Open the latest editorial analysis.","media_type":"text/html","json_url":"https://newruntime.com/posts.json"},{"type":"collection","path":"/sources/","url":"https://newruntime.com/sources/","title":"Sources","reason":"See the original sources this archive cites.","media_type":"text/html"}]}