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AI model reference · 2026

Magnum v4 72B

AnthraciteModel details, evidence, and API facts

This is a series of models designed to replicate the prose quality of the Claude 3 models, specifically Sonnet and Opus. The model is fine-tuned on top of Qwen2.5 72B.

Text generation
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Context window
32,768 tokens
Maximum output
4,096 tokens
Base provider API input
$3.00 / 1M tokens
Base provider API rate
Published evidence
Not available

Overview

About Magnum v4 72B

A concise catalog overview. Technical limits and published evaluation evidence are listed separately below.

This is a series of models designed to replicate the prose quality of the Claude 3 models, specifically Sonnet and Opus. The model is fine-tuned on top of Qwen2.5 72B.

text

Published evaluations

Benchmark results

Only results mapped to this exact model and backed by a named source appear here. Different evaluation protocols are not treated as interchangeable.

No reviewed benchmark result is available for this exact model yet. We leave this section empty instead of assigning a nearby model’s score.

Human preference

Arena results

Arena scores come from blind human preference votes. They are reported separately from task benchmarks and are not used as substitutes for missing benchmark results.

No exact Arena match is available for this model. Similar names and provider variants are not merged automatically.

Technical reference

Specifications and API facts

Technical limits and reference provider prices come from the current catalog unless a reviewed external source is listed. Missing values stay marked as unavailable.

Model
Provider
Anthracite
Release date
Not available in reviewed sources
Catalog added
Oct 22, 2024
Context window
32,768 tokens
Maximum output
4,096 tokens
Knowledge cutoff
2024-06-30
License
Not available in reviewed sources
Capabilities and API
Input types
Text
Output types
Text
Reasoning
Not supported
Provider endpoint tool parameters
Not advertised by provider endpoint
Base provider API input
$3.00 / 1M tokens
Base provider cached input
Not available
Base provider API output
$5.00 / 1M tokens

These are reference provider API rates, not Writingmate checkout charges. Access in Writingmate follows the allowances of your Writingmate plan.

Provenance

Sources and update status

Source links are attached to the facts and evaluations they support. Catalog-only values are not presented as independently verified claims.

Evidence update date is not available.

Catalog record updated Oct 22, 2024.

Catalog-added dates describe when a model entered the catalog, not necessarily its public release date.

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