AI21 Labs · Jurassic-1

Jurassic-1 Jumbo

READER SUMMARY

A 178-billion-parameter general language model released through AI21 Studio's open-beta API and interactive web environment.

DOOM SCORE39.6out of 100model risk profile, not the overall index

CURRENT ASSESSMENT · REVISION 1

Why this model scores 39.6

Jurassic-1 Jumbo provided GPT-3-scale general language capability with immediate public API access, but little demonstrated independent agency. Service-controlled access moderated diffusion, misuse accessibility, and residual control difficulty.

Capability47

Autonomy3

Deployment58

Misuse potential40

Control difficulty35

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MODEL-ATTRIBUTED EVIDENCE

News tied to Jurassic-1 Jumbo

The model score of 39.6 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+0.02

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.

11 Aug 2021RaceTOWARD

AI21 opens Jurassic-1 Jumbo through a public beta API

AI21 Labs launched AI21 Studio in open beta with immediate API and web access to Jurassic-1 Jumbo, a 178-billion-parameter general language model.

Full item contribution: +0.02
Jurassic-1 Jumbo equal share: +0.02

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AUDIT TRAIL

Model score history

R1
Doom Score 39.6
New exact public model released during the August 2021 window.
12 Aug 2026