llama3.1-8b — Free AI Model & API

cerebras/llama3-1-8b

chat

Get API key →

Context Window 128K

Max Output 8K

Rate Limit 30 RPM, 14,400 RPD, 1M TPD

Cost $0.00 FREE

Free Period Since May 10, 2026

Credit Card Not required

Status Online

Overview

The Llama 3.1-8B model by Cerebras, ideal for chat, processes 128k tokens in context and generates up to 8k tokens, with 30 RPM rate limiting, no credit card requirements, and OpenAI compatibility, making it a powerful and accessible large language model.

Model ID

llama3-1-8b

Base URL

https://api.cerebras.ai/v1

Specifications

Context: 128K · Output: 8K · Modality: text · OpenAI Compat: Yes

Quick Start

Integrate llama3.1-8b with 3 lines of code. See the config generator for Claude Code, Cursor, and more.

from openai import OpenAI

client = OpenAI(
 base_url="https://api.cerebras.ai/v1",
 api_key="YOUR_API_KEY"
)

response = client.chat.completions.create(
 model="llama3-1-8b",
 messages=[{"role": "user", "content": "Hello!"}]
)
print(response.choices[0].message.content)

import OpenAI from "openai";

const openai = new OpenAI({
 baseURL: "https://api.cerebras.ai/v1",
 apiKey: "YOUR_API_KEY",
});

const completion = await openai.chat.completions.create({
 model: "llama3-1-8b",
 messages: [{ role: "user", content: "Hello!" }],
});

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

curl https://api.cerebras.ai/v1/chat/completions \
 -H "Content-Type: application/json" \
 -H "Authorization: Bearer YOUR_API_KEY" \
 -d '{
 "model": "llama3-1-8b",
 "messages": [{"role": "user", "content": "Hello!"}]
 }'

Other Free Models from Cerebras

gpt-oss-120b

128K context · No card

qwen-3-235b-a22b-instruct-2507

131K context · No card

zai-glm-4.7

128K context · No card

Llama 3.1 70B

131K context · No card

Rate Limits & Constraints

Rate Limit 30 RPM, 14,400 RPD, 1M TPD

Context Window 128K

Max Output Tokens 8K

Cost Free — since May 10, 2026

Credit Card Not required

OpenAI Compatible Yes — drop-in replacement

Cerebras Platform Limitations

8K context window on free tier (vs 128K on paid)
Limited model selection — Llama and GPT-OSS only
1M tokens/day shared across models

Features & Use Cases

Best For

Chat

Modality Support

text

Cerebras Highlights

Ultra-fast inference on WSE chips
1M tokens/day free
No credit card required
Llama 3.1 8B + GPT-OSS 120B available

Playground — Test llama3.1-8b

Test llama3.1-8b directly in your browser. Your API key is sent directly to Cerebras — never stored.

Model: llama3.1-8b Get Key

🔒 Your key is never stored — sent directly to the model provider via our server proxy.

Ready to chat with llama3.1-8b.

Frequently Asked Questions

How do I get an API key for llama3.1-8b?

Sign up at Cerebras to get your API key. No credit card is required — just an email sign-up. Once you have the key, use the code snippets in the Quick Start section above.

Is llama3.1-8b really free?

Yes. llama3.1-8b is available on Cerebras's free tier and has been free since May 10, 2026. Rate limits apply: 30 RPM, 14,400 RPD, 1M TPD. Always check the provider's terms for any changes to the free tier.

What are llama3.1-8b's rate limits?

30 RPM, 14,400 RPD, 1M TPD Context window: 128K. Max output: 8K. No credit card required.

What are the best free alternatives to llama3.1-8b?

Popular free alternatives include inclusionAI: Ring-2.6-1T, Baidu Qianfan: CoBuddy (free), Owl Alpha. You can also browse all 147+ free models on our site.