Updated daily at 05:00 UTC
- Released
- Aug 2024
- Status
- Retired
- Retired
- 6 May 2025
- Context
- 256K
- Max output
- —
- Input per 1M tokens
- —
- Output per 1M tokens
- —
- Open weights
- Yes
- License
- jamba-open-model-license
- Parameters
- 51.57B, 12B active
- Knowledge cutoff
- —
- Reasoning
- No
- Modalities
- text → text
Category scores
Out of 100, from independent and third-party results only, by method category-2026-09-29.1.
| Category | Score | Rank | Coverage |
|---|---|---|---|
| Human preference | 28.5 | Not ranked | 1 of 5 |
Benchmark results
Every result we hold for this model, with who ran it and where it was published.
Human preference
| Benchmark | Metric | Value | Provenance | Setting | Evaluated | Source |
|---|---|---|---|---|---|---|
| Text Arena (arena.ai) | Arena score (Elo scale) | 1240 | Independent | — | 25 Sep 2026 | Arena |
| Text Arena (arena.ai) | Votes | 8858 | Independent | — | 25 Sep 2026 | Arena |
Other Jamba versions
- Jamba2 3BJan 2026
- Jamba2 MiniJan 2026
- Jamba Reasoning 3BOct 2025
- Jamba 1.7 LargeJul 2025
- Jamba 1.7 MiniJul 2025
- Jamba 1.6 LargeMar 2025
- Jamba 1.6 MiniMar 2025
- Jamba 1.5 LargeAug 2024
- Jamba v0.128 Mar 2024