AI Models

AI21 Jamba 1.5

Long-context hybrid SSM-transformer model

Visit AI21 Jamba 1.5
★4.3ratingPricing · FreemiumHot
The FalcoScan Intel PanelAI21 Jamba 1.5 · AI Models
Data updated 2 November 2026
Opportunity
High
Band
Saturation
Open
Band
Wrapper risk
Low
Band
Momentum
Hot
Market trend
Rating
4.3
of 5 · FalcoScan rating

AI Models AI has a narrow moat on average, from the moat scores of its rated products. What protects AI Models AI tools, and the widest moats

The Brief

What AI21 Jamba 1.5 does

A 256K context window model combining Mamba and transformer layers for efficient long-doc processing.

How AI21 Jamba 1.5 compares with its closest alternatives

All 5 closest alternatives have a free plan, as AI21 Jamba 1.5 does. All 5 offer an API, as AI21 Jamba 1.5 does. AI21 Jamba 1.5 was founded in 2024; the alternatives were founded between 2023 and 2024, 3 of them earlier. AI21 Jamba 1.5 is based in Tel Aviv, Israel; none of the 4 alternatives with a known headquarters is in Israel. They are in the United States and China.

Market position · AI Models

How AI21 Jamba 1.5 compares in AI Models

AI21 Jamba 1.5 has high opportunity and sits in the middle third of 455 live AI Models tools on FalcoScan. Across AI Models, the average opportunity score is 74.6 and the average saturation score 30.5. FalcoScan rates AI21 Jamba 1.5's own market position as open. 200 of the 455 operating AI Models tools have hot momentum, and FalcoScan has recorded 13 shutdowns in the category.

AI21 Jamba 1.5 compared with its closest alternatives
ProductOpportunitySaturationPricingPricing fromFree planAPIPlatformsMomentum
AI21 Jamba 1.5Founded 2024 · Tel Aviv, IsraelHighOpenFreemium—YesYesAPIHot
Claude 3.7 SonnetFounded 2023 · San Francisco, United StatesHighOpenFreemium—YesYesWeb, APIHot
DeepSeek R1Founded 2023HighContestedFreemium—YesYesAPIHot
Gemini 2.5 ProFounded 2024 · Mountain View, United StatesHighOpenFreemium—YesYesWeb, APIHot
DeepSeek V3Founded 2023 · Hangzhou, ChinaHighOpenFreemium—YesYesWeb, APIHot
Llama 3.3Founded 2024 · San Francisco, United StatesHighOpenFree—YesYesAPI, CLIHot

Exact opportunity and saturation scores for all 6 of these, and where each ranks in AI Models.

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What it ships with

Capabilities & who uses it

The capabilities AI21 Jamba 1.5 exposes to builders and the verticals it currently serves.

AI Capabilities
Text GenerationReasoning
Industry Verticals
Software
Tagged

AI21 Jamba 1.5 shows up when builders search for these

long contexthybridSSM
Similar tools · AI Models

Alternatives to AI21 Jamba 1.5

Products still running that do the same job, from the ai models market and related ones, closest match first.

See the AI Models market
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Claude 3.7 Sonnet

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★ 4.7Opportunity High
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DeepSeek R1

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★ 4.7Opportunity High
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Gemini 2.5 Pro

Google most intelligent model yet

★ 4.7Opportunity High
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DeepSeek V3

Fastest open-source frontier model

★ 4.6Opportunity High
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Llama 3.3

Meta's most capable open model

★ 4.6Opportunity High
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LM Studio 0.3

Desktop app to run LLMs locally

★ 4.6Opportunity High
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Featured in
Questions

AI21 Jamba 1.5: common questions

Is AI21 Jamba 1.5 free?

AI21 Jamba 1.5 has a free tier, with paid plans.

What are the best alternatives to AI21 Jamba 1.5?

The closest alternatives to AI21 Jamba 1.5 that are still running, matched on the AI capabilities, uses and audience they share, are Claude 3.7 Sonnet, DeepSeek R1, Gemini 2.5 Pro, DeepSeek V3, and Llama 3.3.

Is AI21 Jamba 1.5 still running?

Yes. As of 2 November 2026, FalcoScan lists AI21 Jamba 1.5 as operating at ai21.com.

Where is AI21 Jamba 1.5 based?

AI21 Jamba 1.5 is headquartered in Tel Aviv, Israel.

Does AI21 Jamba 1.5 have an API?

Yes. AI21 Jamba 1.5 offers an API.

Who is AI21 Jamba 1.5 for?

AI21 Jamba 1.5 is built for developers and researchers.

How do I sign in to AI21 Jamba 1.5?

Sign in on AI21 Jamba 1.5's own website, ai21.com. FalcoScan reviews AI21 Jamba 1.5 but does not run its accounts, so logins, passwords and billing are handled by AI21 Jamba 1.5 directly.

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