AI21 LLM API Models & Pricing

Browse AI21 LLM API models with normalized prompt pricing, output pricing, context windows, release dates, and popularity signals.

1Models tracked
1Priced models
1Popular models
0Latest releases

Provider shortlist

Use AI21 as a model-level shortlist, not a single default choice.

Start from the cost, context, and popularity picks below, then open the model pages or head-to-head comparisons before choosing an API.

Cost pick Jamba Large 1.7 $6 sample workload
Context pick Jamba Large 1.7 256K context window
Popular pick Jamba Large 1.7 #220 popularity signal
When to avoid Narrow catalog AI21 currently has a small tracked catalog, so compare it with broader provider hubs before treating it as a complete vendor shortlist.

AI21 comparisons

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Cross-Provider Alternatives

Open alternatives hub

Use this shortlist when AI21 is not a hard requirement and your first constraint is workload cost.

AlternativeProviderSample CostInput / 1MOutput / 1MContext
🔥Owl AlphaOpenRouter$0$0$01.05M
New🔥Nemotron 3 Ultra (free)NVIDIA$0$0$01M
🔥Laguna M.1 (free)Poolside$0$0$0262.14K
Nemotron 3 Super (free)NVIDIA$0$0$01M
gpt-oss-120b (free)OpenAI$0$0$0131.07K
Laguna XS.2 (free)Poolside$0$0$0262.14K

AI21 model catalog

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ModelPromptOutputContextPopularity
Jamba Large 1.7$2$8256K#220