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-
Tested on 6 benchmarks · BenchGecko score 50.9. Top scores: IFEval (56.3%), BBH (HuggingFace) (35.5%), MMLU-PRO (31.4%).
Gemma 2 9B scores 51.1 (100% as good) at $0.03/1M input · 99% cheaper
HuggingFace MuSR (Multi-Step Reasoning). Tests multi-hop reasoning requiring chaining multiple facts together.
HuggingFace evaluation of MATH Level 5 problems. Competition math requiring advanced reasoning and proof construction.
HuggingFace MMLU-Pro. Harder version of MMLU with 10 answer choices instead of 4 and more challenging questions.
HuggingFace evaluation of GPQA (Graduate-Level Google-Proof Q&A). PhD-level science questions that cannot be easily searched.
- Typetext
- Context33K tokens (~16 books)
- ReleasedOct 2024
- LicenseOpen Source
- StatusActive
- Cost / Message~$0.011
Frequently Asked Questions
Key facts · as of 2026-10-05
- Magnum v4 72B by anthracite-org. BenchGecko score 50.9, rank 140 of 312 scored models (normalized average of public benchmark scores).
- List price $3.00 input · $5.00 output per 1M tokens (as of 2026-10-05).
- Sold by 1 provider (as of 2026-10-05): Mancer 2 (fp8) $2.50 in / $5.00 out.
How to cite · data as of 2026-10-05
Magnum v4 72B · benchmarks, pricing and providers. BenchGecko, data as of 2026-10-05. https://benchgecko.ai/model/magnum-v4-72b
Credit "Source: BenchGecko" with a link. Prices per provider and Gecko Tests are BenchGecko data (CC BY 4.0); benchmark scores keep their original source, listed in the JSON. JSON · llms.txt · MCP