kitio.aiAdded Nov 5, 2026
AI21
Free trialJamba model APIs and custom post-training for enterprises
What is AI21?
AI21 is an Israeli AI lab that sells API access to its Jamba language models and trains specialized models for companies. Its research staff work with a customer's own data to post-train a model the customer owns, aimed at matching frontier quality at lower cost per call.
Developers can call Jamba Mini, a lightweight model, or Jamba Large, built for long context, through an API and SDK with unlimited seats and usage-based billing. New accounts get $10 in credits for seven days without a card.
The post-training service, which AI21 calls lab-as-a-service, places forward-deployed researchers with the customer to build a model trained on its workflows and production traffic. AI21 also lists an Intelligent Gateway product, and custom plans add volume discounts and a dedicated account manager.
Features
- Jamba Mini and Jamba Large APIs
- Long-context models
- Custom post-training
- Python SDK
- Free trial credits
Tags
Releases
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Organization
AI21 Labs
🇮🇱 Israel
Listed by kitio.ai · unverified owner
Pricing
- Pricing model
- Free trial
- Paid options from
- Not listed
- Free trial duration
- 7 days
AI21 plans
Jamba Mini
$0.2 / 1M input tokens
- $0.4 per 1M output tokens
- Lightweight general model
Jamba Large
$2 / 1M input tokens
- $8 per 1M output tokens
- Long-context model
Custom
Contact sales
- Volume discounts
- Dedicated account manager
- Priority support
Prices in USD, checked Nov 5, 2026. Plans change often, so confirm on the AI21 site.Official pricing
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Pros and cons
Pros
- Low per-token price on Jamba Mini
- Long context windows
- Customer owns its post-trained model
Cons
- Trial credits expire after 7 days
- Smaller ecosystem than larger model labs
- Post-training requires a sales process
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Q&A
What is AI21?
AI21 is an Israeli AI lab that sells API access to its Jamba language models and trains specialized models for companies. Its research staff work with a customer's own data to post-train a model the customer owns, aimed at matching frontier quality at lower cost per call.
How much do AI21's Jamba models cost?
Jamba Mini is $0.2 per million input tokens and $0.4 per million output tokens; Jamba Large is $2 and $8.
Does the free trial need a credit card?
No. You get $10 of credits for seven days without entering a card.
How much does AI21 cost?
AI21 is free trial. There is a 7-day free trial.
Is there a free version of AI21?
No, but you can try it free for 7 days before paying.
What are the main features of AI21?
Jamba Mini and Jamba Large APIs, Long-context models, Custom post-training, Python SDK, Free trial credits.
Who makes AI21?
AI21 is made by AI21 Labs.
What are the best alternatives to AI21?
Popular alternatives include OpenAI API, Claude Platform, Grok API.