Google DeepMind · Gemma 3

Gemma 3 27B Base

READER SUMMARY

The largest pretrained Gemma 3 checkpoint, combining multimodal input, long context and single-accelerator deployment.

DOOM SCORE55.0out of 100model risk profile, not the overall index

CURRENT ASSESSMENT · REVISION 1

Why this model scores 55.0

Scale and multimodality raise general capability, while base status limits agency. Single-accelerator open deployment creates substantial diffusion and control challenges.

Capability58

Autonomy6

Deployment97

Misuse potential55

Control difficulty64

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MODEL-ATTRIBUTED EVIDENCE

News tied to Gemma 3 27B Base

The model score of 55.0 rates this model's risk profile. The overall Doom Index of 63.5 measures the recalibrated complete evidence corpus. These values answer different questions.

NET MODEL-ATTRIBUTED INDEX CONTRIBUTION+0.00

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.

12 Mar 2025CapabilityTOWARD

Google releases eight Gemma 3 open model checkpoints

Google released Gemma 3 base and instruction-tuned checkpoints at 1B, 4B, 12B and 27B sizes, with multimodal reasoning, long context and broad local and cloud distribution.

Full item contribution: +0.03
Gemma 3 27B Base equal share: +0.00

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AUDIT TRAIL

Model score history

R1
Doom Score 55.0
Initial exact profile for the separately released 27B base checkpoint.
12 Aug 2026