MiscSubjects

Inception: Mercury 2.5

Mercury 2.5 is the fastest reasoning LLM, and the latest diffusion LLM (dLLM) from Inception.

InceptionMercury 2.5
inception/mercury-2.5
2026-09-08text->textreasoning: high / medium / low / none
Input
$0.04
per 1M tokens
Output
$0.15
per 1M tokens
Cached input
$0
per 1M tokens
Context
260K
tokens it reads
Max output
66K
tokens it writes
Mercury 2.5 is the fastest reasoning LLM, and the latest diffusion LLM (dLLM) from Inception. Instead of generating tokens sequentially, Mercury 2.5 produces and refines multiple tokens in parallel, achieving...
inspect — the catalog entry
{
  "id": "inception/mercury-2.5",
  "canonical_slug": "inception/mercury-2.5-20260908",
  "hugging_face_id": null,
  "name": "Inception: Mercury 2.5",
  "created": 1788892137,
  "description": "Mercury 2.5 is the fastest reasoning LLM, and the latest diffusion LLM (dLLM) from Inception. Instead of generating tokens sequentially, Mercury 2.5 produces and refines multiple tokens in parallel, achieving...",
  "context_length": 260000,
  "architecture": {
    "modality": "text->text",
    "input_modalities": [
      "text"
    ],
    "output_modalities": [
      "text"
    ],
    "tokenizer": "Other",
    "instruct_type": null
  },
  "pricing": {
    "prompt": "0.00000004",
    "completion": "0.00000015",
    "input_cache_read": "0.000000004"
  },
  "top_provider": {
    "context_length": 260000,
    "max_completion_tokens": 65536,
    "is_moderated": false
  },
  "per_request_limits": null,
  "supported_parameters": [
    "include_reasoning",
    "max_tokens",
    "reasoning",
    "reasoning_effort",
    "response_format",
    "stop",
    "structured_outputs",
    "temperature",
    "tool_choice",
    "tools"
  ],
  "default_parameters": {},
  "supported_voices": null,
  "knowledge_cutoff": null,
  "expiration_date": "2026-11-08",
  "links": {
    "details": "/api/v1/models/inception/mercury-2.5-20260908/endpoints"
  },
  "endpoints": [
    "/api/v1/chat/completions",
    "/api/v1/completions",
    "/api/v1/messages",
    "/api/v1/responses"
  ],
  "reasoning": {
    "mandatory": false,
    "default_enabled": true,
    "supported_efforts": [
      "high",
      "medium",
      "low",
      "none"
    ],
    "default_effort": "medium"
  },
  "benchmarks": null
}
openrouter.ai/inception/mercury-2.5
References (1)
  1. Stored model catalog — Nov 5, 2026
Via
OpenRouter
Id
openrouter/inception/mercury-2.5
Model id
inception/mercury-2.5
Name
Inception: Mercury 2.5
Description
Mercury 2.5 is the fastest reasoning LLM, and the latest diffusion LLM (dLLM) from Inception.
Family
inception
Canonical slug
inception/mercury-2.5-20260908
Price in
0.04
Price out
0.15
Price cache read
0.004
Price cache write
null
Price cache write 1h
null
Price web search
null
Price overrides
[]
Context
260000
Max completion tokens
65536
Modality
text->text
Input modalities
["text"]
Output modalities
["text"]
Tokenizer
Other
Knowledge cutoff
null
Created
1788892137
Moderated
false
Params
["include_reasoning","max_tokens","reasoning","reasoning_effort","response_format","stop","structured_outputs","temperature","tool_choice","tools"]
Default parameters
{}
Tools
true
Reasoning
true
Reasoning efforts
["high","medium","low","none"]
Reasoning default effort
medium
Reasoning mandatory
false
Reasoning default enabled
true
Vision
false
Expiration date
2026-11-08

Connected subjects

All AIModel ↗

LinkedInXFacebookRedditEdit
Page dataOpen JSON
page.json
{
  "schema": "page/1",
  "id": "model:openrouter/inception/mercury-2.5",
  "kind": "AIModel",
  "title": "Inception: Mercury 2.5",
  "layout": "item",
  "status": "published",
  "summary": "Mercury 2.5 is the fastest reasoning LLM, and the latest diffusion LLM (dLLM) from Inception.",
  "body": [
    {
      "type": "model",
      "id": "inception/mercury-2.5"
    }
  ],
  "hero": "",
  "facts": {
    "via": "OpenRouter",
    "id": "openrouter/inception/mercury-2.5",
    "model_id": "inception/mercury-2.5",
    "name": "Inception: Mercury 2.5",
    "description": "Mercury 2.5 is the fastest reasoning LLM, and the latest diffusion LLM (dLLM) from Inception.",
    "family": "inception",
    "canonical_slug": "inception/mercury-2.5-20260908",
    "price_in": 0.04,
    "price_out": 0.15,
    "price_cache_read": 0.004,
    "price_cache_write": null,
    "price_cache_write_1h": null,
    "price_web_search": null,
    "price_overrides": [],
    "context": 260000,
    "max_completion_tokens": 65536,
    "modality": "text->text",
    "input_modalities": [
      "text"
    ],
    "output_modalities": [
      "text"
    ],
    "tokenizer": "Other",
    "knowledge_cutoff": null,
    "created": 1788892137,
    "moderated": false,
    "params": [
      "include_reasoning",
      "max_tokens",
      "reasoning",
      "reasoning_effort",
      "response_format",
      "stop",
      "structured_outputs",
      "temperature",
      "tool_choice",
      "tools"
    ],
    "default_parameters": {},
    "tools": true,
    "reasoning": true,
    "reasoning_efforts": [
      "high",
      "medium",
      "low",
      "none"
    ],
    "reasoning_default_effort": "medium",
    "reasoning_mandatory": false,
    "reasoning_default_enabled": true,
    "vision": false,
    "expiration_date": "2026-11-08"
  },
  "sources": [
    {
      "title": "Stored model catalog",
      "url": "https://openrouter.ai/api/v1/models",
      "date": "2026-11-05T11:17:13.538Z"
    }
  ],
  "widgets": [],
  "members": [],
  "relations": [
    {
      "ref": "provider:inceptionlabs.ai",
      "rel": "published by"
    }
  ],
  "media": [],
  "tags": [],
  "query": {},
  "created": "2026-11-05T11:17:13.538Z",
  "updated": "2026-11-05T11:17:13.538Z",
  "provenance": {
    "store": "model-catalog",
    "id": "openrouter/inception/mercury-2.5",
    "key": "state/models/catalogue.json",
    "original_id": "openrouter/inception/mercury-2.5",
    "source_kind": "AIModel",
    "source_provider": "OpenRouter",
    "hash": "b8a855cf066541dc8cd3c51de20458dfb959e05f2957576d918a499325a4a8cb"
  },
  "version": "8d48f3967f9ee746cfa186bd0ba1cbbe547c87decf09a2c9fdc4aa3ea73e7068"
}