Activefrontierllm Proprietary

Jurassic-2 Ultra

by AI21 Labs· Released May 2023· Cutoff August 2022

Jurassic-2 Ultra is AI21 Labs' most powerful large language model, designed for complex reasoning, long-form content generation, and advanced instruction following. It excels at tasks requiring deep understanding and nuanced output, positioning itself as a top-tier model in the Jurassic-2 family.

Official Site API Docs

Input cost

$5.00 per 1M tokens

Output cost

$15.00 per 1M tokens

Context window

8192 tokens

Max output

4096 tokens

Modalities

text

License

proprietary

Capabilities

Text GenerationSummarizationQuestion AnsweringCode GenerationInstruction FollowingZero-shot LearningFew-shot LearningStreaming

Best For

Complex reasoning, long-form content creation, and advanced NLP tasks requiring high accuracy.

Strengths

Exceptional performance on complex reasoning and language understanding benchmarks
Strong instruction following and task completion
High-quality long-form text generation
Supports zero-shot and few-shot learning effectively

Limitations

Smaller context window (8K tokens) compared to some competitors
No native multimodal capabilities (text-only)
Higher cost per token than some alternatives
Limited to English language primarily

Use Cases

Advanced content writing and editing

Complex question answering and research assistance

Code generation and debugging

Summarization of long documents

Creative writing and storytelling

Data extraction and structuring

Chatbots and conversational AI

Improvements Over Previous Model

Improved reasoning and instruction following over Jurassic-2 Jumbo
Higher quality text generation with fewer errors
Better performance on complex tasks like code generation and summarization
Enhanced zero-shot and few-shot learning capabilities
More efficient inference compared to previous models

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