AI21 LabsOpen weightsJamba Large
Jamba Large is an AI21 Labs open-weights model, released 1 Jul 2025. It is not yet ranked: no independent benchmark results so far, only pricing and metadata. At $3.50 per million tokens blended it is among the most expensive ranked models.
- Blended price
- $3.50/M
- $2.00 in · $8.00 out
- Output speed
- –
- First answer
- –
- Context
- 256k
- Released
- 1 Jul 2025
Versions
AI21 Labs has shipped 5 models under this name. Each is ranked on its own results; a newer version often has fewer results so far, which holds its index nearer the average until more arrive.
| Model | Released | Index | Rank |
|---|---|---|---|
| Jamba Largethis page | 1 Jul 2025 | – | – |
| Jamba 1.5 Large | – | 42.7 | #472 |
| Jamba 1.7 Large | – | 41.7 | #495 |
| Jamba Large 1.6 | – | 26.0 | #628 |
| Jamba Large 1.7 | – | – | – |
No independent quality benchmark results yet — only pricing and metadata.
What a task costs
Estimates from list price, output speed and time to first answer for the best configuration. “With caching” assumes three-quarters of the input is served from the prompt cache. Reasoning tokens are not modelled.
| Workload | Tokens in / out | Cost | With caching | Time |
|---|---|---|---|---|
| Chat reply | 400 / 300 | $0.0032 | – | – |
| Summarise a 30-page report | 12,000 / 600 | $0.029 | – | – |
| Code edit | 6,000 / 1,500 | $0.024 | – | – |
| Agentic coding session | 60,000 / 4,000 | $0.152 | – | – |
| Structured extraction | 2,000 / 200 | $0.0056 | – | – |
See also
Data as of 17 Sept 2026. Compare with another model.
Cite as: BenchLeader, “Jamba Large: benchmarks, pricing, speed and rank”, https://www.benchleader.com/models/jamba-large, data as of 17 Sept 2026.