AI21 Labs: Jamba Large

AI21's hybrid SSM-Transformer long-context model for enterprise agents and grounded generation

Model lab: AI21 Labs
Model family: jamba

Model resources

Hugging Face

Modalitiestext → text

Context window256,000

Maximum output4,096

InputUSD 1.6 / 1M tokens

OutputUSD 6.4 / 1M tokens

Try now

Quickstart

Use your Moduck API Key, set the API base URL to https://api.moduck.ai/v1, and set the model parameter to ai21/jamba-large.

import os
import requests

base_url = "https://api.moduck.ai/v1"
api_key = os.environ["MODUCK_API_KEY"]
model_id = "ai21/jamba-large"

response = requests.post(
    f"{base_url}/chat/completions",
    headers={
        "Authorization": f"Bearer {api_key}",
        "Content-Type": "application/json",
    },
    json={
        "model": model_id,
        "messages": [{"role": "user", "content": "Hello!"}],
        "stream": False,
    },
    timeout=60,
)
response.raise_for_status()
print(response.json())

Use the familiar OpenAI-style chat request format to make model integration easier.

Jamba Large API Pricing

Type	Price information
Input	USD 1.6 / 1M tokens
Output	USD 6.4 / 1M tokens

Performance

Performance trends

Throughput89.1 tok/sCurrent

Time to first token1.3 sCurrent

End-to-end latency7.1 sCurrent

Throughput

Current89.1 tok/s

Window average89.0 tok/s

Time to first token

Current1.3 s

Window average1.4 s

End-to-end latency

Current7.1 s

Window average7.5 s

Tail latency (P99)

Current13.2 s

Window average16.5 s

Prompt cache hit rate

Current26.5%

Window average23.4%

Error rate

Current0.0%

Window average0.1%

Availability

Uptime100%At least one provider responded

Availability100%Requests actually served

Error rate0%Share of failed requests

Served requests, hour by hour

24 hours agoNow

Jamba Large Compare models

Model	Input price	Output price	Context window	Capabilities
Jamba LargeThis page	USD 1.6 / 1M tokens	USD 6.4 / 1M tokens	256,000	Text output · Tool calling
Jamba Mini	USD 0.16 / 1M tokens	USD 0.32 / 1M tokens	256,000	Text output · Tool calling
Beam 1.0 501B A23B	USD 0.2 / 1M tokens	USD 0.8 / 1M tokens	1,048,576	Text output · Reasoning · Tool calling
Ling 3.1 Flash	USD 0.06 / 1M tokens	USD 0.176 / 1M tokens	262,144	Text output · Reasoning · Tool calling
Schematron V2 Small	USD 0.04 / 1M tokens	USD 0.184 / 1M tokens	128,000	Text output

Model specifications

Input: text
Output: text
Context window: 256,000
Maximum output: 4,096
Release date: 2025-07-01
Attachments: No
Reasoning: No
Tool calling: Yes
Structured output: Yes
Temperature setting: Yes
Open weights: Yes

Frequently asked questions

What is Jamba Large for?

AI21's hybrid SSM-Transformer long-context model for enterprise agents and grounded generation

What inputs and outputs does Jamba Large support?

Recorded inputs: text; outputs: text.

How is Jamba Large priced?

The pricing table shows the current recorded Moduck price. For example: Input USD 1.6 / 1M tokens; Output USD 6.4 / 1M tokens. See the pricing table for all units, variants, and conditions.

What specifications are recorded for Jamba Large?

Current model records list Context window 256,000 tokens; Maximum output 4,096 tokens.

What model parameter does the Quickstart use?

The example uses ai21/jamba-large. This value comes from the page identifier and is not confirmed as a callable Moduck public ID.

Can I call this model through the Moduck API now?

This page has no verified Moduck API call for this model. A Quickstart example or reserved ID does not establish access; check the models available to your account.