Jamba 1.5 Mini
Smaller hybrid SSM-Transformer model, fast and efficient at long contexts.
Updated
Quick facts
- Released
- Aug 2024
- Context
- 256K tokens
- Output / 1M
- $0.40 / 1M tokens
- License
- Jamba Open Model License
About Jamba 1.5 Mini
Jamba 1.5 Mini brings AI21's hybrid Mamba-Transformer architecture to a smaller parameter count, useful for cost-sensitive long-context workloads. The 256k context window is the standout feature at this price tier, and the Mamba state-space components keep memory and throughput economics favourable on long inputs.
Jamba Mini is most often deployed as the input-stage model in two-tier pipelines that summarise large corpora before handing off to a more capable downstream model.
Benchmarks
Published scores from AI21's model card or independent leaderboards. We do not publish numbers we cannot source, see methodology.
Capabilities
Strengths
- 256k context at small-model price
- Hybrid SSM-Transformer is efficient on long inputs
- Open weights for self-hosting
Tracked weaknesses
- Quality below mid-tier frontier
Pricing
Per-million-token rates as published by AI21.
| Tier | Price | Notes |
|---|---|---|
| Input | $0.20 / 1M tokens | Tokens you send to the model |
| Output | $0.40 / 1M tokens | Tokens the model generates |
| Context | 256K tokens | Max combined input + output |
Call Jamba 1.5 Mini from your code
Drop-in snippet for the AI21 SDK. Set your API key in the environment and run.
import OpenAI from "openai";
const client = new OpenAI({
// Use OPENAI_API_KEY for OpenAI, or your provider's key + baseURL.
apiKey: process.env.OPENAI_API_KEY,
});
const completion = await client.chat.completions.create({
model: "jamba-1-5-mini",
messages: [
{ role: "user", content: "What's the time complexity of quicksort?" },
],
});
console.log(completion.choices[0].message.content);Compare Jamba 1.5 Mini with…
Frequently asked
How much does Jamba 1.5 Mini cost per million tokens?
Jamba 1.5 Mini is priced at $0.20 / 1M tokens for input tokens and $0.40 / 1M tokens for output tokens via the official AI21 API at the time of writing.What is Jamba 1.5 Mini's context window?
Jamba 1.5 Mini supports a context window of 256K tokens.Is Jamba 1.5 Mini open source?
Jamba 1.5 Mini ships with open weights under the Jamba Open Model License license. You can self-host it, fine-tune it, and (subject to the license terms) deploy it commercially.When was Jamba 1.5 Mini released?
Jamba 1.5 Mini was released on Aug 22, 2024 by AI21.
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