LLM Reference

Jurassic-2 Ultra

Released
2023-03-09
Last refreshed
2026-05-19
Status
Researched 16d ago
ClassificationJSON / Tool use

Jurassic-2 Ultra is worth evaluating for classification and json / tool use when its provider route and context window match the workload.

Use it for

  • Teams evaluating classification and json / tool use
  • Workloads that can use a 8k context window
  • Buyers comparing 2 tracked provider routes

Do not use it for

  • Vision or document-understanding workloads
Specifications
Released
2023-03-09
Context
8k
Parameters
60B
Architecture
Decoder Only
Knowledge cutoff
2022
Specialization
general
Training
finetuned
Created by

Developing AI for natural language understanding.

Tel Aviv, Israel
Founded 2017
Website
Pricing
Output / 1M
$18.80
Input / 1M
$18.80

Cheapest of 2 routes · AI21 Studio

About

Jurassic-2 Ultra by AI21 Labs is their most advanced large language model, designed for intricate text generation tasks that demand high-quality output. It is specifically optimized for "zero-shot" prompts, meaning it performs well without requiring example inputs—making it perfect for chatbot and conversational applications. As the flagship model in the Jurassic series, it features over 60 billion parameters and supports multiple languages such as English, Spanish, and French. While its primary strengths are in text completion, generation, and summarization, it also excels in tasks like question answering and advanced information extraction. Trained on a vast array of texts, including curated CommonCrawl and Wikipedia data, it was exposed to about 1.2 trillion tokens. However, users should be mindful of potential inaccuracies, biases, and its July 2022 knowledge cutoff. Despite these considerations, Jurassic-2 Ultra is widely used in various applications, including AI21’s Wordtune, to enhance reading and writing experiences.

Jurassic-2 Ultra is a model in the Jurassic-2 family. The structured metadata tracks a 8k-token context window and structured outputs. This page tracks provider routes through AWS Bedrock and AI21 Studio, with the cheapest tracked route listed at $18.8 input and $18.8 output per 1M tokens. No headline benchmark score is tracked for Jurassic-2 Ultra yet.

Top use-case fit

Classification

Included by capability and metadata signals in the decision map.

JSON / Tool use

Included by capability and metadata signals in the decision map.

Provider price ladder

Compare all 2

Compare API pricing across 2 providers for input and output tokens, batch, and cached reads when available.

ProviderInput / 1MOutput / 1MRoute
AI21 Studio$18.80$18.80
Serverless
AWS Bedrock$18.80$18.80
Serverless

Capabilities

Structured Outputs

Benchmark peer barsfor Classification

No task-mapped benchmark peers are available for this model yet.

Migration checks

No linked migration route is available for this model yet.

Rankings & picks(5)