# Magnum v4 (slim)

> Magnum v4, a family of models by anthracite-org, listed from OpenRouter. Indexed, not reviewed: facts and our own checks, no score or ranking. This is a series of models designed to replicate the prose quality of the Claude 3 models, specifically…

- Full: https://www.anchorterminal.com/tools/magnum-v4.md (~500 tokens) · this version ~430 tokens · JSON https://www.anchorterminal.com/tools/magnum-v4.json · canonical https://www.anchorterminal.com/tools/magnum-v4
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-05

# Magnum v4

> Indexed, not reviewed: facts from OpenRouter and our own checks. No score, grade or rank, and not in the rankings until the panel reviews it. How the index works: https://www.anchorterminal.com/indexed/

- Kind: model family, by anthracite-org
- Category: Model APIs & inference (https://www.anchorterminal.com/categories/inference.md)
- Listed because: OpenRouter lists it, with prices from the providers that serve it.
- What OpenRouter says: 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 \[Qwen2.5 72B\](https://openrouter.ai/qwen/qwen-2.5-72b-instruct).

## Models (1)

| Model | OpenRouter id | Released | Context | Input $/1M | Output $/1M | Supports |
| --- | --- | --- | --- | --- | --- | --- |
| Magnum v4 72B | `anthracite-org/magnum-v4-72b` | 2024-10 | 32k | $2.50 | $5 | structured output |

Prices and limits as OpenRouter lists them; a provider's own price can differ.

- JSON: https://www.anchorterminal.com/api/v1/tools/magnum-v4.json
- Being indexed says nothing about quality, and nobody can pay for it. Ask for a review: https://www.anchorterminal.com/builders/#claiming