Mercury 2

inception/mercury-2

Mercury 2 is an extremely fast reasoning LLM, and the first reasoning diffusion LLM (dLLM). Instead of generating tokens sequentially, Mercury 2 produces and refines multiple tokens in parallel, achieving...

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Context window: 128K
Input: Text
Output: Text
Released: 2026-03-04

Max output: 50K
Weights: Closed
Capabilities: Reasoning, Structured, Temperature, Tool call

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Performance

Overall capability

41.9/100

Coding: 37.6
Reasoning: 41.8
Professional work: 34.1
Knowledge & language: 39.7


Terminal-Bench 4.0 (AA rerun)Mercury 2	Coding	Artificial Analysis	2026-11-05
SciCodeMercury 2	Coding	Artificial Analysis	2026-11-05
AA-Briefcase	Professional work	Artificial Analysis	2026-11-05
Humanity’s Last ExamMercury 2	Reasoning	Artificial Analysis	2026-11-05
AutomationBench-AAMercury 2	Professional work	Artificial Analysis	2026-11-05
IFBench（Artificial Analysis）Mercury 2	Knowledge & language	Artificial Analysis	2026-11-05
AA-LCRMercury 2	Knowledge & language	Artificial Analysis	2026-11-05
CritPtMercury 2	Reasoning	Artificial Analysis	2026-11-05

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ModelRegistry · Catalog updated 2026-11-05