Magnum v4 72B
This is a series of models designed to replicate the prose quality of the Claude 3 models, specifically Sonnet(https://openrouter.ai/anthropic/claude-3.5-sonnet) and Opus(https://openrouter.ai/anthropic/claude-3-opus). The model is fine-tuned on top of Qwen2.5 72B.
- Input price
- per 1M tokens
- Output price
- per 1M tokens
- Context
- 32.8K4.1K max output
- Cost / request
- 8K in · 500 out
01Routes and pricing
02Capabilities
- Input
- text
- Output
- text
- Context
- 32.8K
- Max output
- 4.1K
Structured outputJSON modeLogprobsSeeded sampling
03Quick start
Call it with your RProuter key
Any OpenAI-compatible SDK works. Point it at the RProuter base URL from your API keys page and use this model ID.
Catalog source: openrouter.ai · checked 2026-09-16
const response = await client.chat.completions.create({
model: "anthracite-org/magnum-v4-72b",
messages: [{ role: "user", content: "A story begins…" }],
max_tokens: 500,
stream: true,
});
for await (const chunk of response) {
process.stdout.write(chunk.choices[0]?.delta?.content ?? "");
}