Jurassic-2 Jumbo
No estimate
No hardware requirements for this model
The weights for this model have not been published, so it cannot be downloaded or run on your own hardware at any size. It is reachable only through its provider, and no graphics card changes that.
On record
Full specification
Everything on record for this model. Most of it describes how it was trained rather than how it runs — useful context for judging how much work went into it, and how it compares with models built at a different scale.
Origin
Who built this model, where, and when it was published.
- Organisation
- AI21 Labs
- Organisation type
- Industry
- Country
- Israel
- Published
- 1 March 2023
What it does
The problem areas the model was built for. A model can carry several of each.
- Domain
- Language
- Task
- Language modeling, Translation, Language modeling/generation, Question answering
Size
How large the model is and how much data it was trained on. Parameters are the figure that decides whether it fits on a given graphics card.
- Parameters
- 178B
- Training data
- tokens
Source is https://crfm.stanford.edu/helm/latest/#/leaderboard as viewed on 2023-12-06
Availability
Whether you can obtain the model and run it on your own hardware, which is what decides if any of the graphics-card figures on this page apply.
- Weights
- Closed — provider access only
- Model access
- API access
- Training code
- Unreleased
How it is classified
Labels the source dataset applies when tracking notable models, and how confident it is in the entry.
- Likely above 10²³ FLOP
- Yes
Sources
Where this record came from and when it was last checked.
- Reference
- Announcing Jurassic-2 and Task-Specific APIs
- Last updated
- 28 November 2025
What the numbers mean
About this model
Jurassic-2 Jumbo was published by AI21 Labs, in Israel, in March 2023. It comes out of industry.
It works in Language, and is recorded as doing language modeling, Translation, Language modeling/generation, Question answering.
Because the weights are not available, none of the hardware figures elsewhere on this site apply to it.
Answers
Jurassic-2 Jumbo — common questions
Who created Jurassic-2 Jumbo?
Jurassic-2 Jumbo was published by AI21 Labs, based in Israel, categorised as industry.
When was Jurassic-2 Jumbo released?
Jurassic-2 Jumbo was published in March 2023. Capability per parameter has improved considerably since, so a newer model of the same size is often the better use of the same hardware.
What is Jurassic-2 Jumbo used for?
Jurassic-2 Jumbo works in Language, and is recorded as handling language modeling, Translation, Language modeling/generation, Question answering. These are the areas it was designed around; they describe intent rather than a hard boundary.
What GPU do I need to run Jurassic-2 Jumbo?
None. Jurassic-2 Jumbo is a closed model — its weights were never published, so it cannot be downloaded or run on your own hardware at any price. It is reachable only through its provider.
Is Jurassic-2 Jumbo open source?
No. Jurassic-2 Jumbo has not had its weights published, so it exists only as a service controlled by its owner.
How many parameters does Jurassic-2 Jumbo have?
Jurassic-2 Jumbo has 178B parameters. Source is https://crfm.stanford.edu/helm/latest/#/leaderboard as viewed on 2023-12-06. That figure is the total, and it is what decides how much memory the model needs — roughly half a gigabyte per billion at the compression most people use.
The other direction
Looking at it from the other side?
This page starts from the model. If you already own a card and want to know everything it will run, start from the hardware instead.