Jamba-Instruct

Jamba-Instruct launched in public preview on 2 May 2024. AI21 added chat behavior, instruction tuning and safety training to the original Jamba design.

Access not confirmed

A hosted counterpart to the base model

The AI21 launch described a 256K context and tasks such as summarizing legal text or answering questions about earnings calls. The aligned service was distinct from the unaligned Jamba v0.1 weight release.AI21 launches Jamba-Instruct

The serving platform changed the published limit

AI21's June 2024 Azure launch stated a 70K context limit for that offering. This differs from the 256K limit in its original launch.Jamba-Instruct's original Azure offeringAI21 launches Jamba-Instruct

Practical guidance. The difference is a reason to record the host and endpoint alongside a model name. A checkpoint's advertised capability does not establish every platform's request limit.

An old migration target is not a current alias

AI21's Jurassic migration guide directed customers to jamba-instruct. The current Jamba catalog instead identifies dated Mini and Large releases.AI21's historical Jurassic-to-Jamba migration noticeAI21 Jamba versions, aliases and API deprecations

Practical guidance. This article records the historical model. It does not treat the old preview endpoint as a confirmed service for new applications.

Specifications & access

Jamba-Instruct specifications
DetailValue and conditions
StatusAccess not confirmed
Launch date
Model identifiersjamba-instructjamba-instruct-preview
Original release formPublic previewAI21 launches Jamba-Instruct
Current accessOriginal endpoint availability is not confirmedAI21 Jamba versions, aliases and API deprecations

Related models

  • Original instruction-tuned Mini model with tool calls, JSON output and long text input.

    Launch date Deprecated API; check access detailsDownloadable · API
  • Original pretrained hybrid Mamba-Transformer checkpoint for model training and adaptation.

    Launch date Downloadable
  • Largest instruction-capable Jurassic-2 tier for complex text comprehension and generation.

    Launch date Access not confirmed