prices synced 2026-09-11
A

Magnum v4 72B

Anthracite Org · Released Oct 2024

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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).

Strengths
Produces clear, well-structured prose with strong reasoning capabilities across a broad range of tasks, matching the characteristics of Claude 3 Sonnet and Opus.
Best for
Writing, analysis, and reasoning-heavy tasks where prose quality and thoughtful responses are priorities.
Limitations
16K token context window is relatively constrained for working with lengthy documents or extended conversations; performance on specialized domains may vary compared to the original Claude models.

Input / 1M

$2.50

Output / 1M

$5.00

Cached input / 1M

Context window

32K

Price history

Input (solid)Output (dashed)
Price per 1M tokens over timeOutput went from $5.00 to $5.00; Input went from $3.00 to $2.50 between Jun 2026 and Sep 2026.$0$1.00$2.00$3.00$4.00$5.00Output on 11 Jun 2026: $5.00Output on 1 Sep 2026: $5.00Out $5.00Input on 11 Jun 2026: $3.00Input on 1 Sep 2026: $2.50In $2.50Jun 2026Sep 2026

Price change

30d
in decreased 16.7% out decreased 0.0%
90d
in decreased 16.7% out decreased 0.0%
1y
in decreased 16.7% out decreased 0.0%
Since launch
in decreased 16.7% out decreased 0.0%

Snapshots

Effective Input Output Cached in Note Source
1 Sep 2026 $2.50 $5.00 Imported from OpenRouter openrouter.ai
11 Jun 2026 $3.00 $5.00 Imported from OpenRouter openrouter.ai
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