BlenderBot 2.0 400M
The smaller public BlenderBot 2.0 checkpoint, combining dialogue with persistent memory and generated internet-search queries.
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Why this model scores 27.5
The 400M release added memory and external retrieval with meaningful open diffusion, but modest scale, narrow dialogue scope, and known reliability limits constrain capability and control difficulty.
News tied to BlenderBot 2.0 400M
The model score of 27.5 rates this model's risk profile. The overall Doom Index of 66.8 measures the complete temporally weighted evidence record. These values answer different questions.
Each article's current Doom Index contribution is divided equally among the exact models named on that article. This prevents multi-model evidence from being claimed in full on several model pages. Model risk scores use a bounded temporal offset around their technical profile, but never feed back into the overall index.
Meta releases BlenderBot 2.0 with memory and internet search
Meta released BlenderBot 2.0 models and code with persistent conversation memory, generated internet search queries, and retrieval of current information beyond their training data.
- Full item contribution
- +0.02
- BlenderBot 2.0 400M equal share
- +0.01
Model score history
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R4
Doom Score 27.5
Source-backed model availability audit using the model's existing primary or authoritative catalogue evidence. Exact-version evidence chronology replayed under temporal-monthly-pressure-v4.
12 Aug 2026 -
R3
Doom Score 27.5
Exact-version evidence chronology replayed after run doombench-hourly-news-20260812-142416 under temporal-monthly-pressure-v4.
12 Aug 2026 -
R2
Doom Score 28.3
Exact-version evidence chronology replayed after run doombench-hourly-news-20260812-132112 under fixed-sensitivity-v3.
12 Aug 2026 -
R1
Doom Score 29.5
New exact public model tier absent from the durable catalogue.
12 Aug 2026