AI21 LabsJurassic-2

Jurassic-2 Grande Base

Jurassic-2 Grande Base was one of the March 2023 text-completion models. AI21 released a separate instruction-tuned Grande alongside this base version.

Access not confirmed

How the later name differs

In June 2023, AI21 simplified the range to instruction-capable models. The Grande size became Mid.AI21 simplifies Jurassic-2 to Light, Mid and Ultra

Practical guidance. A historical Grande Base reference should not be treated as proof of identical weights or behavior under the later Mid name.

Current access is not established

Practical guidance. This page preserves the distinct original base release. No current public API or weight distribution has been confirmed for this checkpoint.

Specifications & access

Jurassic-2 Grande Base specifications
DetailValue and conditions
StatusAccess not confirmed
Launch date
Model identifiersJ2-grande
Release formBase language modelJurassic-2 and task-specific API launch

Related models

  • Middle Jurassic-2 tier for text generation, summaries and information extraction.

    Launch date Access not confirmed
  • Middle-sized Jurassic-1 text model introduced between Large and Jumbo.

    Launch date Access not confirmed