Anthracite: Magnum v4 72B
anthracite-org/magnum-v4-72b
Access Magnum v4 72B from Anthracite using Puter.js AI API.
Get Started// npm install @heyputer/puter.js
import { puter } from '@heyputer/puter.js';
puter.ai.chat("Explain quantum computing in simple terms", {
model: "anthracite-org/magnum-v4-72b"
}).then(response => {
document.body.innerHTML = response.message.content;
});
<html>
<body>
<script src="https://js.puter.com/v2/"></script>
<script>
puter.ai.chat("Explain quantum computing in simple terms", {
model: "anthracite-org/magnum-v4-72b"
}).then(response => {
document.body.innerHTML = response.message.content;
});
</script>
</body>
</html>
# pip install openai
from openai import OpenAI
client = OpenAI(
base_url="https://api.puter.com/puterai/openai/v1/",
api_key="YOUR_PUTER_AUTH_TOKEN",
)
response = client.chat.completions.create(
model="anthracite-org/magnum-v4-72b",
messages=[
{"role": "user", "content": "Explain quantum computing in simple terms"}
],
)
print(response.choices[0].message.content)
curl https://api.puter.com/puterai/openai/v1/chat/completions \
-H "Content-Type: application/json" \
-H "Authorization: Bearer YOUR_PUTER_AUTH_TOKEN" \
-d '{
"model": "anthracite-org/magnum-v4-72b",
"messages": [
{"role": "user", "content": "Explain quantum computing in simple terms"}
]
}'
Model Card
Magnum v4 72B is a 72-billion parameter creative writing and conversational model developed by Anthracite, fine-tuned on top of Qwen2.5-72B-Instruct. It was specifically trained to replicate the prose quality of Claude 3 Sonnet and Opus, making it one of the most popular open-weight models for narrative generation.
The model excels at creative writing, interactive storytelling, roleplay, and character-driven dialogue. It actively drives narratives forward while maintaining consistent character personas across extended conversations. Multi-language support covers English, French, German, Spanish, Chinese, Japanese, and more.
Magnum v4 72B supports up to 32,768 tokens of context and uses the ChatML prompt format. It's a strong choice for developers building applications where engaging, human-like prose matters more than raw benchmark performance.
Context Window 16K
tokens
Max Output 2K
tokens
Input Cost $3
per million tokens
Output Cost $5
per million tokens
Release Date Sep 20, 2024
Model Playground
Try Magnum v4 72B instantly in your browser.
This playground uses the Puter.js AI API — no API keys or setup required.
Frequently Asked Questions
You can access Magnum v4 72B by Anthracite through Puter.js AI API. Include the library in your web app or Node.js project and start making calls with just a few lines of JavaScript — no backend and no configuration required. You can also use it with Python or cURL via Puter's OpenAI-compatible API.
Yes, it is free if you're using it through Puter.js. With the User-Pays Model, you can add Magnum v4 72B to your app at no cost — your users pay for their own AI usage directly, making it completely free for you as a developer.
| Price per 1M tokens | |
|---|---|
| Input | $3 |
| Output | $5 |
Magnum v4 72B was created by Anthracite and released on Sep 20, 2024.
Magnum v4 72B supports a context window of 16K tokens. For reference, that is roughly equivalent to 33 pages of text.
Magnum v4 72B can generate up to 2K tokens in a single response.
Yes — the Magnum v4 72B API works with any JavaScript framework, Node.js, or plain HTML through Puter.js. Just include the library and start building. See the documentation for more details.
Get started with Puter.js
Add Magnum v4 72B to your app without worrying about API keys or setup.
Read the Docs View Tutorials