Jamba 1.5 Large vs Jamba 1.5 Mini
A complete head-to-head: pricing, context window, benchmarks, modality coverage, and openness, with a programmatic verdict synthesized from the underlying data.
- PriceJamba 1.5 Mini
Jamba 1.5 Mini is roughly 20.0× cheaper on output tokens ($0.40 vs $8.00 per 1M).
- Context windowTie
Both ship a 256K-token context window.
- BenchmarksTie
No directly comparable public benchmarks are available for both models, check the spec sheets for individual scores.
- ModalitiesTie
Both handle text.
- OpennessTie
Both ship open weights, self-host either one.
On balance Jamba 1.5 Mini edges ahead, winning 1 of 5 categories against Jamba 1.5 Large's 0. Jamba 1.5 Mini is roughly 20.0× cheaper on output tokens ($0.40 vs $8.00 per 1M). Both ship a 256K-token context window.
No directly comparable public benchmarks are available for both models, check the spec sheets for individual scores. Both target the same set of modalities (text), so the deciding factors are price, context, and raw quality. Both ship open weights, self-host either one.
Both shipped within roughly a month of each other in 2024, so they share the same generation of training data and tooling. Jamba 1.5 Large is usually picked for long context and rag workloads, while Jamba 1.5 Mini sees more deployments in long context and summarization. If pricing matters more than every last benchmark point, run the numbers in the calculator below before committing.
Side-by-side specs
| Spec | Jamba 1.5 Large | Jamba 1.5 Mini |
|---|---|---|
| Provider | AI21 | AI21 |
| Released | Aug 2024 | Aug 2024 |
| Modalities | text | text |
| Context window | 256K tokens | 256K tokens |
| Max output | , | , |
| Input · 1M | $2.00 / 1M tokens | $0.20 / 1M tokens |
| Output · 1M | $8.00 / 1M tokens | $0.40 / 1M tokens |
| Knowledge cutoff | , | , |
| Open weights | Yes (Jamba Open Model License) | Yes (Jamba Open Model License) |
| API available | Yes | Yes |
Pricing at scale
What you'd actually pay at typical workloads. Numbers come from each model's published per-million-token rates.
- Light usage, 100k in / 50k out per day$18.00 vs $1.20
- Heavy usage, 1M in / 500k out per day$180 vs $12.00
- RAG workload, 5M in / 200k out per day$348 vs $32.40
Light usage, 100k in / 50k out per day: $18.00 vs $1.20 per month, model B comes out ahead. Heavy usage, 1M in / 500k out per day: $180 vs $12.00 per month, model B comes out ahead. RAG workload, 5M in / 200k out per day: $348 vs $32.40 per month, model B comes out ahead.
Estimated spend for the listed models at your usage. Numbers are derived from each model's published per-million-token rates.
- Jamba 1.5 Large$0.600
- Jamba 1.5 Mini$0.040
Benchmarks compared
Only sourced numbers. Where a benchmark is missing for one model we show the available value rather than fabricating the other.
Jamba 1.5 Large fits when…
- 256k context
- Efficient long-context inference
- Open weights
Jamba 1.5 Mini fits when…
- 256k context at small-model price
- Hybrid SSM-Transformer is efficient on long inputs
- Open weights for self-hosting
- Cost-sensitive workloads, 20.0× cheaper than Jamba 1.5 Large on output tokens.
Consider GPT-5 mini
GPT-5's mid-tier sibling, most of the quality at a fraction of the price, ideal for high-volume production workloads.
Frequently asked
Is Jamba 1.5 Large or Jamba 1.5 Mini cheaper?
Jamba 1.5 Mini is cheaper at $0.40 / 1M tokens per million output tokens, vs $8.00 / 1M tokens for Jamba 1.5 Large.Which has the larger context window?
Both Jamba 1.5 Large and Jamba 1.5 Mini ship a 256K-token context window.Is Jamba 1.5 Large or Jamba 1.5 Mini better for coding?
Both Jamba 1.5 Large and Jamba 1.5 Mini are competitive on coding benchmarks. See each model's individual spec page for HumanEval and SWE-bench scores where published. For an opinionated pick, consult our Best LLM for Coding ranking.Are either of these models open source?
Both ship with open weights. Jamba 1.5 Large is licensed under Jamba Open Model License; Jamba 1.5 Mini under Jamba Open Model License.When were Jamba 1.5 Large and Jamba 1.5 Mini released?
Jamba 1.5 Large was released by AI21 on 2024-08-22. Jamba 1.5 Mini was released by AI21 on 2024-08-22.
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