Magnum v4 72B
Summary
Magnum v4 72B is an open-weight language model from Anthracite ORG, released on 22 Oct 2024. It accepts text and generates text, with a 33K-token context window and up to 4K output tokens per response. As of 4 Oct 2026, the lowest listed API price is $2.50 per million input tokens and $5 per million output tokens (OpenRouter), across 1 provider we track.
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).
Last verified 4 Oct 2026. Every figure on this page links to its source.
Specifications
| Developer | Anthracite ORG |
|---|---|
| Release date | 22 Oct 2024 [OpenRouter] |
| Status | Generally available |
| Weights | Open weights [Hugging Face] |
| License | apache-2.0 [Hugging Face] |
| Parameters | 72.7B [Hugging Face] |
| Context window | 33K (32,768 tokens) [OpenRouter] |
| Max output | 4K tokens [OpenRouter] |
| Knowledge cutoff | 30 Jun 2024 [OpenRouter] |
| Input | Text [OpenRouter] |
| Output | Text [OpenRouter] |
| Reasoning mode | No [OpenRouter] |
| Tool calling | No [OpenRouter] |
| Structured output | Yes [OpenRouter] |
| Hugging Face | anthracite-org/magnum-v4-72b [Hugging Face] |
Magnum v4 72B API pricing by provider
USD per million tokens. Sorted by input price.
| Provider | Input | Output | Cached input | Context | Source |
|---|---|---|---|---|---|
| OpenRouter anthracite-org/magnum-v4-72b | $2.50 | $5 | – | 33K | OpenRouter, 4 Oct 2026 |
Frequently asked questions
What is the context window of Magnum v4 72B?
Magnum v4 72B has a context window of 32,768 tokens (33K) and can generate up to 4,096 tokens in a single response, according to OpenRouter.
How much does the Magnum v4 72B API cost?
Magnum v4 72B is listed from $2.50 per million input tokens and $5 per million output tokens (OpenRouter). Prices last verified 4 Oct 2026.
Is Magnum v4 72B open source?
Magnum v4 72B is an open-weight model: its weights are published on Hugging Face as anthracite-org/magnum-v4-72b under the apache-2.0 license. Check the license terms before commercial use.
When was Magnum v4 72B released?
Anthracite ORG released Magnum v4 72B on 22 Oct 2024, according to OpenRouter.
Change history
No changes detected since we started tracking this model. We re-check every source daily.