Side-by-side comparison of Jamba 1.5 Large (AI21 Labs · Israel) and Llama 3.1 405B (Meta · USA) for self-hosted deployment of the open-weight model. Jamba 1.5 Large is rated conditional; Llama 3.1 405B is conditional. They part ways on licence: Jamba 1.5 Large is "Jamba Open", Llama 3.1 405B is "Llama community".
| Field | ||
|---|---|---|
| Summary | ||
| Verdict | Conditional SSM-Transformer hybrid (Mamba) with 256K context. Jamba Open Model License permits commercial use below $50M annual revenue; above that, paid licence required. Israel jurisdiction; EU adequacy decision in place. | Conditional Frontier-class 405B open model. Self-hosting requires serious compute (8×H100 minimum at FP8). Same Llama community licence caveats as the rest of the family. |
| Last reviewed | 2026-04-15 | 2026-04-15 |
| Open-weight | ||
| Licence | Jamba Open | Llama community |
| Commercial use | Under $50M rev. | With caps |
| Training data | Undisclosed | Undisclosed |
| Origin | Israel | USA |
| Performance & pricing? | ||
| Quality index | 11/100 | 17/100 |
| Speed | — | 31 tok/s |
| Blended price | $3.50/M | $3.69/M |
| Context window | — | — |
| Evidence | ||
| Sources | ||
No overlapping sources between the two entries.