Jamba API Pricing
Jamba is the model family from AI21 Labs, an Israeli AI lab founded in 2017. Jamba pairs a Mamba state-space architecture with Transformer layers for a 256K-token context at a lower cost than comparable long-context models, and ships as Jamba Large and Jamba Mini.
Jamba2 Mini LAUNCHED JAN 2026
Jamba2 Mini is AI21's current small Jamba: a 52B-total, 12B-active hybrid SSM-Transformer (Mamba) mixture-of-experts with a 256K context, text in and text out, released 2026-01-08 under Apache 2.0 …
Jamba Large 1.7 LAUNCHED JUL 2025
AI21's flagship hybrid SSM-Transformer (Mamba) model on AI21 Studio: $2/M input and $8/M output, 256K context, 4K max output.
Jamba Mini 1.7 LAUNCHED JUL 2025
AI21's small, efficient Jamba tier on AI21 Studio: $0.20/M input and $0.40/M output, 256K context, 8K max output.
| Model | Input /M | Output /M | Cached | Context | Max output | Vision | Tools | Tier |
|---|---|---|---|---|---|---|---|---|
| Jamba2 Mini | $0.20 | $0.40 | — | 256K | — | ✗ | ✓ | Active |
| Jamba Large 1.7 FLAGSHIP | $2.00 | $8.00 | — | 256K | — | ✗ | ✓ | Frontier |
| Jamba Mini 1.7 RETIRED | — | — | — | Retired Feb 1, 2026 | → Jamba2 Mini | ✗ | ✗ | Retired |
Pricing across the lineup.
The Jamba story so far.
Releases and pricing from AI21's Jamba line on AI21 Studio. Sourced from AI21 blog and press, the pricing page, and Wikipedia - verified at publication.
jamba-mini alias moves to Jamba2 Mini (52B total / 12B active, 256K), at the same $0.20/$0.40 list price$0.20/$0.40Jamba models are served through AI21 Studio, AI21's own console and API, with per-token pay-as-you-go billing and an OpenAI-compatible interface.
CLOUDJamba is also available on Amazon Bedrock as a third-party model, useful for teams that want AWS-native billing, IAM and data residency.
OPENAI21 released Jamba2 Mini and 3B under Apache 2.0, and Jamba 1.5 Large and Mini under the Jamba Open Model License, so the weights can be self-hosted.
AI21 Labs was founded in 2017 in Tel Aviv by Amnon Shashua, Ori Goshen and Yoav Shoham. It is one of the oldest independent LLM companies, predating the current generative-AI wave with its Jurassic language models and the Wordtune writing assistant.
AI21's current focus is the Jamba family, the first production-grade model to combine a Mamba state-space architecture with Transformer attention. That hybrid design gives Jamba a 256K-token context window at lower memory cost than a pure Transformer, which AI21 positions for long-document RAG and enterprise workloads.
Jamba is served per token on AI21 Studio and on Amazon Bedrock, with Jamba 1.5 weights released under an open license. Large lists at $2/$8 and Mini at $0.20/$0.40, held flat across the 1.5, 1.6 and 1.7 refreshes.
AI21 raised a $208M Series C in 2023 at roughly a $1.4B valuation, backed by Google, Nvidia and others. It competes with Mistral and Cohere as an independent, enterprise-focused alternative to the largest US labs.
Mistral
Mistral is the closest independent peer - open weights, EU base, and a broader lineup, though without Jamba's SSM-hybrid long-context design.
ENTERPRISE NLPCohere
Cohere targets the same enterprise RAG buyers, but its current Command A models are enterprise-priced while Jamba keeps a public per-token rate.
FRONTIERAnthropic
Claude leads on frontier quality and long-context reliability, but at several times Jamba Large's token price.
FRONTIEROpenAI
OpenAI dominates brand demand; AI21 competes on independent hosting, open weights and cost-efficient long context rather than raw capability.
OPEN-WEIGHT GIANTAlibaba (Qwen)
The Qwen (Tongyi Qianwen) model family from Alibaba Cloud's Tongyi Lab. First released in 2023, Qwen is the most-downloaded open-weight model family in the world — most tiers ship under Apache 2.0 on Hugging Face and ModelScope, while the proprietary Max tier is served through Alibaba Cloud's Model Studio.
GLM ARCHITECTZhipu (Z.ai / GLM)
The Beijing lab behind the GLM models, also operating internationally as Z.ai. Spun out of Tsinghua University in 2019, Zhipu ships strong coding/agentic models, multiple free tiers, and open weights — and was the first of China's "Six Tigers" to pursue an IPO. It also sits on the US Entity List.
Jamba pricing questions.
Practical questions about AI21 Jamba API pricing, with the published per-token rates kept separate from workload assumptions.
Q · 01 How much does the AI21 Jamba API cost? +
Jamba Large is $2.00/M input and $8.00/M output, and Jamba Mini is $0.20/M input and $0.40/M output. Both support a 256K context. The pricing page does not print versions: AI21's docs put Jamba Large 1.7 and Jamba2 Mini behind those names, after Jamba Mini 1.7 was retired on February 1, 2026. Verified on the AI21 pricing page and model docs 2026-09-29.Q · 02 What is the difference between Jamba and a Transformer model? +
Q · 03 Has Jamba pricing changed across versions? +
$2/$8 and Jamba Mini at $0.20/$0.40 across the 1.5, 1.6 and 1.7 releases, and the unversioned Jamba Mini row that now serves Jamba2 Mini still reads $0.20/$0.40, so upgrades did not change the per-token cost.