Magnum v4 72B

Frontier

Anthracite · Released October 2024 · Knowledge cutoff June 2024

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).

Facts and pricing

Provider
Anthracite
Context window
33K tokens
Input price
33.0 credits / 1M tokens ($3.00 raw)
Output price
55.0 credits / 1M tokens ($5.00 raw)
Vision (image input)
No
Tool calling
No
Extended reasoning
No

Credits are what Zeplik bills: 1 credit = $0.10, computed from the raw provider rate with a 1.10x margin. Raw prices shown per 1M tokens.

Try Magnum v4 72B now

Ask Magnum v4 72B anything. Your prompt opens in the Zeplik app with this model selected.

Magnum v4 72B

What Magnum v4 72B is best for

Frequently asked questions

What is Magnum v4 72B?
Magnum v4 72B is an AI model by Anthracite. 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).
How much does Magnum v4 72B cost on Zeplik?
Input tokens cost 33.0 credits per million and output tokens 55.0 credits per million (1 credit = $0.10; the raw provider rates are $3.00 and $5.00 per million). New accounts start with free credits.
How long can a conversation with Magnum v4 72B be?
Magnum v4 72B has a 33K-token context window (32,768 tokens), which covers the conversation plus any documents you attach.
Does Magnum v4 72B support images and tools?
Magnum v4 72B is text-only and does not support tool calling.

Related models

GPT-5.6 Luna ProFrontier

GPT-5.6 Luna Pro is the same underlying model as [GPT-5.6 Luna](https://openrouter.ai/openai/gpt-5.6-luna), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. Learn more in OpenAI's docs: https://developers.openai.com/api/docs/guides/reasoning#reasoning-mode

1.1M ctx66.0 cr/M outJuly 2026
GPT-5.6 LunaFrontier

GPT-5.6 Luna is a fast, cost-efficient model in OpenAI's GPT-5.6 series. It is suited for high-volume, latency-sensitive tasks such as chat, classification, and lightweight agentic workflows, providing capable reasoning for...

1.1M ctx66.0 cr/M outJuly 2026
GPT-5.6 Terra ProFrontier

GPT-5.6 Terra Pro is the same underlying model as [GPT-5.6 Terra](https://openrouter.ai/openai/gpt-5.6-terra), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. Learn more in OpenAI's docs: https://developers.openai.com/api/docs/guides/reasoning#reasoning-mode

1.1M ctx165 cr/M outJuly 2026
GPT-5.6 TerraFrontier

GPT-5.6 Terra is a balanced model in OpenAI's GPT-5.6 series, positioned between the flagship Sol tier and the cost-efficient Luna tier. It is suited for everyday coding, reasoning, and agentic...

1.1M ctx165 cr/M outJuly 2026
GPT-5.6 Sol ProFrontier

GPT-5.6 Sol Pro is the same underlying model as [GPT-5.6 Sol](https://openrouter.ai/openai/gpt-5.6-sol), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. Learn more in OpenAI's docs: https://developers.openai.com/api/docs/guides/reasoning#reasoning-mode

1.1M ctx330 cr/M outJuly 2026
GPT-5.6 SolFrontier

GPT-5.6 Sol is the flagship model in OpenAI's GPT-5.6 series. It is suited for complex reasoning, coding, and agentic workflows, and is particularly strong at command-line and multi-step coding tasks...

1.1M ctx330 cr/M outJuly 2026
Magnum v4 72B - Anthracite AI Model | Zeplik Chat