AI21 Labs model product
Jamba 1.5 Mini
5 family, a state-of-the-art hybrid SSM-Transformer instruction following foundation model offering superior long context handling, speed, and quality.
Updated Aug 12, 2026. Default version: Jamba 1.5 Mini
LLMBoard score0.0Jamba 1.5 Mini
Coverage60%8 benchmark families
Context window256.1KTokens
Official input priceN/AOfficial price unavailable
Jamba 1.5 Mini Specifications
Technical details for the model's default version.
- Version
- Jamba 1.5 Mini
- Released
- Aug 22, 2024
- Knowledge cutoff
- Mar 5, 2024
- Parameters
- 52B
- Context window
- 256.1K
- Max output
- 256.1K
- Inputs
- text
- Outputs
- text
- Open weights
- No
- License
- Jamba Open Model License
Jamba 1.5 Mini Capability Profile
This profile uses the model's current scored version. Arena ratings and prices are shown separately.
Jamba 1.5 Mini Benchmark Results
Benchmark scores for Jamba 1.5 Mini.
| Wild Bench | 0.4 | 8 | 8 | 0.0% | C | |
| ARC-C | 0.9 | 13 | 34 | 63.6% | C | |
| TruthfulQA | 0.5 | 15 | 18 | 17.6% | C | |
| Arena Hard | 0.5 | 20 | 26 | 24.0% | C | |
| GSM8k | 0.8 | 41 | 48 | 14.9% | C | |
| MMLU | 0.7 | 84 | 100 | 16.2% | C | |
| MMLU-Pro | 0.4 | 123 | 129 | 4.7% | C | |
| GPQA | 0.3 | 220 | 234 | 6.0% | C |
Jamba 1.5 Mini Arena Results
Preference and agent-evaluation results for the default version.
| text style control | overall | 295 | 1239.6 | 8,858 | N/A | |
| text | overall | 296 | 1186.8 | 8,858 | N/A |
Jamba 1.5 Mini Pricing
Official vendor API pricing appears first, followed by individual provider offers.
- Official API
- N/A
- Official provider
- N/A
- Lowest third-party
- N/A
- Tracked offerings
- 0
No provider prices
The default version has no current input or output token prices.
Official prices use only the vendor's configured official Provider and positive standard USD PAYG rates. Third-party offers remain explicitly labeled.
Jamba 1.5 Mini Versions
Available versions of this model. The score column identifies the version used in the overall ranking.
| Jamba 1.5 Mini | 0.0 | 52B | 256.1K | 256.1K | No | Jamba Open Model License |
What is Jamba 1.5 Mini?
Key information about Jamba 1.5 Mini and its available data.
5 family, a state-of-the-art hybrid SSM-Transformer instruction following foundation model offering superior long context handling, speed, and quality.
Data as of 2026-08-11.
Jamba 1.5 Mini vs nearby models
Open a comparison with the three ranked models immediately above and below this model.
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FAQ
Common questions about Jamba 1.5 Mini.
When was Jamba 1.5 Mini released?
Jamba 1.5 Mini's default version was released on Aug 22, 2024.
How much does Jamba 1.5 Mini cost?
No official standard PAYG price is currently available for Jamba 1.5 Mini.
Who created Jamba 1.5 Mini?
Jamba 1.5 Mini was created by AI21 Labs.
What is the context window for Jamba 1.5 Mini?
The default version has a 256.1K token context window.
Is Jamba 1.5 Mini open weight?
No. The default version is not marked as having publicly available weights.
How many API providers offer Jamba 1.5 Mini?
No provider offering is currently linked to the default version.
What models should I compare Jamba 1.5 Mini with?
Nearby ranked alternatives include Phi 3.5 vision, IBM Granite 4.0 Tiny, Llama 3.2 11B.