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Magnum v4 72B

anthracite-org

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://open

quality50

Updated 3 h ago · first seen 11 Sept 2026

model_01M294WWN9TXKF8F86H9CHCSYY

Context
32.8K tokens
T2 · 3 h ago
Released
22 Oct 2024
T2 · 3 h ago
Knowledge cutoff
Jun 2024
T2 · 3 h ago

As of

Rewind the record: see this entity's attributes exactly as AI Atlas knew them on a given day.

Claim history · Description

1 claims · 1 propertiesShow all properties

Descriptiondescription1

Claim history for Description
ValueValid from → toStatusSourceConfidenceExtractor
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).currentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

Claims are temporal and append-only: a new observation closes the previous claim (valid_to) instead of overwriting it. Conflicting claims from different sources are kept side by side and flagged — never averaged. Methodology →