AI21 Jamba 1.5 Large — Free AI Model & API

Overview

Quick Start

Integrate AI21 Jamba 1.5 Large with 3 lines of code. See the config generator for Claude Code, Cursor, and more.

from openai import OpenAI

client = OpenAI(
    base_url="https://models.github.ai/inference",
    api_key="YOUR_API_KEY"
)

response = client.chat.completions.create(
    model="AI21-Jamba-1.5-Large",
    messages=[{"role": "user", "content": "Hello!"}]
)
print(response.choices[0].message.content)

import OpenAI from "openai";

const openai = new OpenAI({
  baseURL: "https://models.github.ai/inference",
  apiKey: "YOUR_API_KEY",
});

const completion = await openai.chat.completions.create({
  model: "AI21-Jamba-1.5-Large",
  messages: [{ role: "user", content: "Hello!" }],
});

console.log(completion.choices[0].message.content);

curl https://models.github.ai/inference/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "AI21-Jamba-1.5-Large",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

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Rate Limits & Constraints

Features & Use Cases

How to Get a Free GitHub Models API Key

Follow these steps to get your free API key for AI21 Jamba 1.5 Large. No credit card required — just sign up and start using the API.

1. Sign in with GitHub account Every GitHub user gets free access.
2. Go to github.com/marketplace/models
3. Generate a personal access token with Models:read permission
4. Pick a model GPT-4.1, o3, Llama 4, DeepSeek — 45+ models available.
5. Configure OpenAI client Base URL: https://models.inference.ai.azure.com

Playground — Test AI21 Jamba 1.5 Large

Test AI21 Jamba 1.5 Large directly in your browser. Your API key is sent directly to GitHub Models — never stored.

Frequently Asked Questions

More questions? See our full FAQ →

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