Magnum v4 72B API Pricing
Magnum v4 72B costs $2.50 per 1M input tokens and $5.00 per 1M output tokens. Context window: 33K. Prices verified 2026-10-21 · source
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What would Magnum v4 72B cost you per month?
| Workload | Requests/mo | Avg tokens (in/out) | Est. monthly cost |
|---|---|---|---|
| Light chatbot | 10,000 | 800 / 400 | $40.00 |
| Coding agent | 5,000 | 8,000 / 2,000 | $150.00 |
| RAG pipeline | 30,000 | 4,000 / 500 | $375.00 |
| Doc summarizer | 2,000 | 20,000 / 1,000 | $110.00 |
Estimates use list prices without prompt caching. Caching can cut input cost by up to 90% on repeated context.
About Magnum v4 72B
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).
Compare Magnum v4 72B with
- v4 72B vs OpenAI: GPT-5.6 Terra Pro
- v4 72B vs Anthropic: Claude Fable 5
- v4 72B vs Anthropic: Claude Opus 5
- v4 72B vs OpenAI: GPT-5.6 Sol
Popular head-to-heads — see all on the comparisons index.
Frequently asked questions
How much does Magnum v4 72B cost?
Magnum v4 72B costs $2.50 per 1M input tokens and $5.00 per 1M output tokens. Verified 2026-10-21 — provider source.
What is the context window?
33K tokens, with up to 4K output tokens per response. That's roughly 41 pages of text in a single request.
Does it support prompt caching?
Prompt-caching pricing is not published for this model via OpenRouter.
What's a cheaper alternative?
ScaleDown: Summarize saves about 99% on a typical workload with comparable quality.
Official resources
- Magnum v4 72B on OpenRouter — live endpoint, pricing source of record.
- Artificial Analysis leaderboard → — independent intelligence and performance rankings.
- Shred your current bill — paste a CSV and see if switching saves money.