Meta · BlenderBot 2.0

BlenderBot 2.0 400M

READER SUMMARY

The smaller public BlenderBot 2.0 checkpoint, combining dialogue with persistent memory and generated internet-search queries.

DOOM SCORE29.5out of 100model risk profile, not the overall index

CURRENT ASSESSMENT · REVISION 1

Why this model scores 29.5

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.

Capability30

Autonomy18

Deployment45

Misuse potential22

Control difficulty24

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MODEL-ATTRIBUTED EVIDENCE

News tied to BlenderBot 2.0 400M

The model score of 29.5 rates this model's risk profile. The overall Doom Index of 60.8 measures the recalibrated complete evidence corpus. These values answer different questions.

NET MODEL-ATTRIBUTED INDEX CONTRIBUTION+0.01

Each article's leave-one-out 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 are recalculated from their technical profile and related news, but never feed back into the overall index.

16 Jul 2021AutonomyTOWARD

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: +0.01
BlenderBot 2.0 400M equal share: +0.01

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AUDIT TRAIL

Model score history

R1
Doom Score 29.5
New exact public model tier absent from the durable catalogue.
12 Aug 2026