MiscSubjects

Magnum v4 72B

This is a series of models designed to replicate the prose quality of the Claude 3 models, specifically…

Anthracite OrgMagnum v4 72B
anthracite-org/magnum-v4-72b
2024-10-22text->textknows up to 2024-06-30
Input
$2.50
per 1M tokens
Output
$5
per 1M tokens
Cached input
$2.50
per 1M tokens
Context
33K
tokens it reads
Max output
4K
tokens it writes
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).
inspect — the catalog entry
{
  "id": "anthracite-org/magnum-v4-72b",
  "canonical_slug": "anthracite-org/magnum-v4-72b",
  "hugging_face_id": "anthracite-org/magnum-v4-72b",
  "name": "Magnum v4 72B",
  "created": 1729555200,
  "description": "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).\n\nThe model is fine-tuned on top of [Qwen2.5 72B](https://openrouter.ai/qwen/qwen-2.5-72b-instruct).",
  "context_length": 32768,
  "architecture": {
    "modality": "text->text",
    "input_modalities": [
      "text"
    ],
    "output_modalities": [
      "text"
    ],
    "tokenizer": "Qwen",
    "instruct_type": "chatml"
  },
  "pricing": {
    "prompt": "0.0000025",
    "completion": "0.000005",
    "input_cache_read": "0.0000025"
  },
  "top_provider": {
    "context_length": 32768,
    "max_completion_tokens": 4096,
    "is_moderated": false
  },
  "per_request_limits": null,
  "supported_parameters": [
    "frequency_penalty",
    "logit_bias",
    "logprobs",
    "max_tokens",
    "min_p",
    "presence_penalty",
    "repetition_penalty",
    "response_format",
    "seed",
    "stop",
    "structured_outputs",
    "temperature",
    "top_a",
    "top_k",
    "top_logprobs",
    "top_p"
  ],
  "default_parameters": {},
  "supported_voices": null,
  "knowledge_cutoff": "2024-06-30",
  "expiration_date": null,
  "links": {
    "details": "/api/v1/models/anthracite-org/magnum-v4-72b/endpoints"
  },
  "endpoints": [
    "/api/v1/chat/completions",
    "/api/v1/completions",
    "/api/v1/messages",
    "/api/v1/responses"
  ],
  "benchmarks": null,
  "reasoning": null
}
openrouter.ai/anthracite-org/magnum-v4-72b
References (1)
  1. Stored model catalog — Nov 8, 2026
Invocation contract
JSONInvocation contract
4 keys
"create_task" 4 keys
"method""POST"
"url""/api/jarticles"
"headers" 1 key
"Content-Type""application/json"
"body" 6 keys
"slug""<UNIQUE_TASK_ID>"
"title""<TASK_TITLE>"
"kind""task"
"status""published"
"visibility""private"
"facts" 5 keys
"state""open"
"spec""<TASK_INSTRUCTIONS>"
"capability""model:openrouter/anthracite-org/magnum-v4-72b"
"tools" 1 item
"Files"
"inputs" 1 key
"max_tool_iterations"6
"prepare" 4 keys
"method""POST"
"url""/api/jarticles/{task}/prepare"
"headers" 1 key
"Content-Type""application/json"
"body"
"execute" 4 keys
"method""POST"
"url""/api/jarticles/{invocation}/execute"
"headers" 2 keys
"Content-Type""application/json"
"If-Match""<PREPARED_HASH>"
"body"
"authentication""Signed-in owner session, or X-Terminal-Key header"

Invocations and related objects

0 invocation records

Via
OpenRouter
Id
openrouter/anthracite-org/magnum-v4-72b
Model id
anthracite-org/magnum-v4-72b
Name
Magnum v4 72B
Description
This is a series of models designed to replicate the prose quality of the Claude 3 models, specifically…
Family
anthracite-org
Canonical slug
anthracite-org/magnum-v4-72b
Price in
2.5
Price out
5
Price cache read
2.5
Price cache write
null
Price cache write 1h
null
Price web search
null
Price overrides
[]
Context
32768
Max completion tokens
4096
Modality
text->text
Input modalities
["text"]
Output modalities
["text"]
Tokenizer
Qwen
Knowledge cutoff
2024-06-30
Created
1729555200
Moderated
false
Params
["frequency_penalty","logit_bias","logprobs","max_tokens","min_p","presence_penalty","repetition_penalty","response_format","seed","stop","structured_outputs","temperature","top_a","top_k","top_logprobs","top_p"]
Default parameters
{}
Tools
false
Reasoning
false
Reasoning efforts
null
Reasoning default effort
null
Reasoning mandatory
false
Reasoning default enabled
null
Vision
false
Expiration date
null

Connected subjects

All AIModel ↗

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Page dataOpen JSON
page.json
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  "id": "model:openrouter/anthracite-org/magnum-v4-72b",
  "kind": "AIModel",
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  "layout": "item",
  "status": "published",
  "summary": "This is a series of models designed to replicate the prose quality of the Claude 3 models, specifically…",
  "body": [
    {
      "type": "model",
      "id": "anthracite-org/magnum-v4-72b"
    }
  ],
  "hero": "",
  "facts": {
    "via": "OpenRouter",
    "id": "openrouter/anthracite-org/magnum-v4-72b",
    "model_id": "anthracite-org/magnum-v4-72b",
    "name": "Magnum v4 72B",
    "description": "This is a series of models designed to replicate the prose quality of the Claude 3 models, specifically…",
    "family": "anthracite-org",
    "canonical_slug": "anthracite-org/magnum-v4-72b",
    "price_in": 2.5,
    "price_out": 5,
    "price_cache_read": 2.5,
    "price_cache_write": null,
    "price_cache_write_1h": null,
    "price_web_search": null,
    "price_overrides": [],
    "context": 32768,
    "max_completion_tokens": 4096,
    "modality": "text->text",
    "input_modalities": [
      "text"
    ],
    "output_modalities": [
      "text"
    ],
    "tokenizer": "Qwen",
    "knowledge_cutoff": "2024-06-30",
    "created": 1729555200,
    "moderated": false,
    "params": [
      "frequency_penalty",
      "logit_bias",
      "logprobs",
      "max_tokens",
      "min_p",
      "presence_penalty",
      "repetition_penalty",
      "response_format",
      "seed",
      "stop",
      "structured_outputs",
      "temperature",
      "top_a",
      "top_k",
      "top_logprobs",
      "top_p"
    ],
    "default_parameters": {},
    "tools": false,
    "reasoning": false,
    "reasoning_efforts": null,
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    "reasoning_mandatory": false,
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    "vision": false,
    "expiration_date": null
  },
  "sources": [
    {
      "title": "Stored model catalog",
      "url": "https://openrouter.ai/api/v1/models",
      "date": "2026-11-08T01:17:13.012Z"
    }
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  "widgets": [],
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  ],
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  "tags": [],
  "query": {},
  "created": "2026-11-08T01:17:13.012Z",
  "updated": "2026-11-08T01:17:13.012Z",
  "provenance": {
    "store": "model-catalog",
    "id": "openrouter/anthracite-org/magnum-v4-72b",
    "key": "state/models/catalogue.json",
    "original_id": "openrouter/anthracite-org/magnum-v4-72b",
    "source_kind": "AIModel",
    "source_provider": "OpenRouter",
    "hash": "64c56385346c8fb54da4ef9f7b799cb37fe6c0b66f89c8ca9c0c152bbb6b10d0"
  },
  "version": "0d5115e33ca02a9b2d0e6e30d6a177b57df440d275bdb6cd54a18fe3e3f46a01"
}