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Jurassic-2 Ultra


Jurassic-2 Ultra is AI21 Labs logoAI21 Labs's language model with a 8K context window and up to 8K output tokens, starting at $15.00 / 1M input and $15.00 / 1M output. AI21's flagship Jurassic-2 LLM, designed for complex, high-quality text generation tasks requiring top-tier language understanding.
Spec
Canonical IDai21-j2-ultra
TypeLanguage
StatusActive
CreatorAI21 LabsAI21 Labs
Providers
Context Window8K tokens
Max Output8K tokens
Input ModalitiesText
Output ModalitiesText

Capabilities

Input1/5
Text
Image·
Audio·
Video·
PDF·
Output1/5
Text
Image·
Audio·
Video·
Embedding·
Capabilities0/13
Reasoning·
Adaptive Reasoning·
Function Calling·
Parallel Function Calling·
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·

Pricing by Provider

ProviderStandard
Input
$ / 1M
Output
$ / 1M
AI21 Labs logo
AI21 Labs
j2-ultra
$15.00$15.00

Cost Calculator

Preset:
Compares every provider & tier in USD

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
Jurassic-2 1 Ultra8K$18.80$18.80Available
Jurassic-2 Ultra8K$15.00$15.00Current

Other models

ModelTierReleasedContextInput / 1MOutput / 1M
Jurassic-2 1 MidMid8K$12.50$12.50
Jurassic-2 Grande Instruct
Jurassic-2 Jumbo Instruct
Jurassic-2 Light
Jurassic-2 LightLight8K$3.00$3.00
Jurassic-2 MidMid8K$10.00$10.00

Model IDs