Jamba2 Mini API Pricing
Jamba2 Mini is the model AI21 now serves as jamba-mini: a 52B-total, 12B-active hybrid SSM-Transformer released January 8, 2026 with open weights under Apache 2.0. AI21 Studio lists it at $0.20/M input and $0.40/M output with a 256K context - the same price as Jamba Mini 1.7, which AI21 retired on February 1, 2026. Checked by hand against ai21.com and AI21's model docs.
Run the numbers.
Live calculator pre-loaded with Jamba2 Mini's public token rates. AI21 publishes no separate prompt-cache rate, so every input token is billed at the input price.
Real-world presets.
Reading 100-page contracts
Ticket triage
Invoice field extraction
Enterprise Q&A turn
This is a chars-per-token approximation, not a real tokenizer. Actual tokens vary by language, code density, and tool-call overhead — counts are typically ±10–20% off for English prose, more for code or non-Latin scripts. For exact billing, use the vendor's official tokenizer.
| Model | Input /M | Output /M | Effective blended | Context | Best for |
|---|---|---|---|---|---|
| Jamba2 Mini Current | $0.20 | $0.40 | $0.216 agentic 92/8 | 256K | Cheap 256K-context enterprise Q&A |
| Jamba Large 1.7 | $2.00 | $8.00 | $2.48 +11× | 256K | AI21's larger Jamba for harder reasoning |
| Jamba Mini 1.7 | $0.20 | $0.40 | $0.216 retired | 256K | The Jamba Mini this model replaced |
| Mistral Small 4 | $0.15 cache $0.015 | $0.60 | $0.0842 −2.6× | 256K | Budget model from an independent lab |
| Gemini 3.1 Flash-Lite | $0.25 cache $0.025 | $1.50 | $0.18 −17% | 1M | Budget multimodal alternative |
| Claude Haiku 4.5 | $1.00 cache $0.10 | $5.00 | $0.682 +3.2× | 200K | Low-latency frontier-lab tier |
Frequently asked.
Practical Jamba2 Mini pricing questions - the rate, the version behind the alias, and what the page does not include.
Q · 01 What is Jamba2 Mini priced at? +
$0.20/M input and $0.40/M output, with a 256K-token context. The pricing page names the row simply "Jamba Mini"; AI21's model docs identify the version behind it as Jamba2 Mini.Q · 02 Which model ID should I use? +
jamba-mini-2-2026-01 is the dated snapshot; jamba-mini-2 and the unversioned jamba-mini both point to it today, but the unversioned alias moved once already, from Jamba Mini 1.7 in February 2026, and can move again.Q · 03 Did the price change from Jamba Mini 1.7? +
$0.20/$0.40 before AI21 retired it on February 1, 2026, and AI21 has kept its Mini tier at that price since Jamba 1.5. Code that called the jamba-mini alias moved to Jamba2 Mini without a change in per-token cost.Q · 04 Is there a prompt-cache discount? +
$0.20/M. Under our standard 92/8 input/output blend that is $0.216/M.Q · 05 Can I self-host it instead? +
Q · 06 How does it compare with Jamba Large? +
$2.00/M input and $8.00/M output - ten and twenty times this model - with the same 256K context. Large is still the 1.7 generation; AI21 has not published a Jamba2 Large.