Side-by-side comparison of Jamba 1.5 Large (AI21 Labs · Israel) and Step-3.7-Flash (StepFun) for self-hosted deployment of the open-weight model. Jamba 1.5 Large is rated conditional; Step-3.7-Flash is conditional. They part ways on licence: Jamba 1.5 Large is "Jamba Open", Step-3.7-Flash is "Apache 2.0".
| 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 Per the published Apache 2.0 LICENSE, the Step-3.7-Flash weights ship without commercial restriction — a 198B / 11B-active vision-language MoE with a 256k-token context aimed at tool-heavy and agentic workflows. The remaining EU-readiness gaps are the entirely undisclosed training corpus and StepFun's Shanghai-based vendor jurisdiction; deploy on self-managed EU infrastructure and document the Art. 50 transparency story for any synthetic or biometric output. |
| Last reviewed | 2026-04-15 | 2026-05-30 |
| Open-weight | ||
| Licence | Jamba Open | Apache 2.0 |
| Commercial use | Under $50M rev. | Unrestricted |
| Training data | Undisclosed | Undisclosed |
| Origin | Israel | China (Shanghai) |
| Performance & pricing? | ||
| Quality index | 11/100 | — |
| Speed | — | — |
| Blended price | $3.50/M | — |
| Context window | — | — |
| Evidence | ||
| Sources | ||
No overlapping sources between the two entries.