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Mercury 2

InceptionProprietary

Description

Mercury 2 is the fastest reasoning LLM, built on diffusion-based language model (dLLM) architecture. Instead of generating text token-by-token, it refines multiple text blocks simultaneously, achieving over 1,000 tokens per second on Nvidia Blackwell GPUs — 5x faster than leading speed-optimized LLMs. Supports tool usage and JSON output with 128K context window.

Release Date
2026-02-20
Parameters
—
Context Length
128K
Modalities
text

Capability Radar

29
general
32
coding
77
reasoning
51
scienceest.
50
agents
0
multimodal

Science uses a reasoning proxy when dedicated science benchmarks are unavailable.

Rankings

Domain#RankScoreSource
Code Ranking155
49.0
AA
General Ranking115
64.0
AA
Science106
60.0
AA

Benchmark Scores (LLM Stats)

Biology

GPQA74.0%SR
SciCode38.0%SR

Code

LiveCodeBench67.0%SR

Communication

Tau2 Airline53.0%SR

General

IFBench71.0%SR

Math

AIME 202591.1%SR

AA Evaluation Indices

Intelligence Index
32.8
Coding Index
30.6
Gpqa
0.8
Tau2
0.7
Ifbench
0.7
Scicode
0.4
Lcr
0.4
Terminalbench Hard
0.3
Hle
0.2

LLM Stats Category Scores

General
70
Instruction Following
70
Biology
60
Chemistry
60
Math
60
Physics
60
Reasoning
60
Tool Calling
50
Code
50
Communication
50

Pricing

Input Price$0.25 / 1M tokens
Output Price$0.75 / 1M tokens
Blended Price (3:1)$0.375 / 1M tokens

Speed

Tokens/sec881.5 tokens/s
Time to First Token3.71s
Time to Answer3.71s

Available Providers

(LS internal units)
ProviderInput PriceOutput Price
Inception250K750K

External Sources

LLM Stats