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AI21 Labs

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description AI21 Labs Overview

AI21 Labs develops Jurassic models known for their strong performance in text generation and understanding. Their focus on enterprise applications and nuanced language capabilities positions them as a competitive alternative to larger players. AI21's Wordtune writing assistant demonstrates the practical utility of their technology.

help AI21 Labs FAQ

What language models does AI21 Labs make now?

AI21's current model pages foreground the Jamba family, including Jamba2 3B and Jamba2 Mini for enterprise and on-device work. The company previously became known for Jurassic models, but its current product direction is centered on Jamba and enterprise AI systems. [AI21 Jamba](https://www.ai21.com/jamba/)

What were AI21 Labs' Jurassic models?

AI21's Jurassic-2 lineup included Light, Mid, and Ultra models with different tradeoffs between speed, cost, and language capability. Jurassic-2 was an earlier AI21 offering, while later Jamba releases use a different hybrid architecture. [AI21 Jurassic-2](https://www.ai21.com/blog/simplifying-our-jurassic-2-offering/)

What makes Jamba different from a standard Transformer language model?

AI21 describes Jamba as a hybrid of Transformer and Mamba layers with mixture-of-experts components. Jamba 1.5 Mini and Large were released with an effective 256K-token context window, allowing them to process very long documents. [AI21 Jamba 1.5](https://www.ai21.com/research/jamba-1-5-hybrid-transformer-mamba-models-at-scale/)

What is Wordtune, and where can I use AI21's writing assistant?

Wordtune is AI21's writing and reading assistant for rewriting, paraphrasing, grammar help, and summaries. Its current support page lists a web app, Chrome extension, Edge add-on, and iOS app, while Android is not listed as supported. [Wordtune Platforms](https://support.wordtune.com/en/articles/5775553-what-websites-and-platforms-is-wordtune-available-on)