Advertise here
#265

Mercury 2.5

Inception Release: 2026-09-08 Tested on: 2026-09-08 22:50 inception/mercury-2.5::low
~100BOtherClosedEstimated
(high) (medium) (low) (none)

Summary

Mercury 2.5 scores 5.1 on AI BENCHY and ranks #265. It has 9.8 reliability, a 39.4% pass rate, $0.011 total cost, and 1.35s average response time.

What makes Mercury 2.5 unique: It stands out most in Puzzle Solving, where it ranks #3, while Instructions following is its weakest area at #16.

Model facts

Researched on 2026-09-08

Estimated
Parameters
~100B
Architecture
Other
Availability
Closed
License
-

Best estimate from public evidence; the vendor did not disclose every value. Inception identifies Mercury 2.5 as a diffusion LLM but does not disclose its parameter count or topology. The low-confidence 100B estimate follows the existing Mercury family records; it is not a vendor-reported count.

Parameter source Availability source

Score

5.1

Consistency

8.1

Reliability

9.8

Total Cost (Current Price)

$0.011

Total Output Tokens

33,719

Total Input Tokens

138,020

Input Price

$0.040 / 1M

Output Price

$0.150 / 1M

Tests Correct

Wrong Tests: 16

Attempt pass rate: 39.4%

Flaky tests

5

Flaky tests had mixed outcomes across runs (at least one pass and one fail).

Response Time (avg)

1.35s

Response Time (max): 7.48s

Response Time (total): 29.74s

Wrong answer: 14 API error: 1 No answer: 1

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#265 Mercury 2.5

low
Cost
$0.001
Time
2.4s
Tokens
1,236 tok

Charts

Choose the first model, then click a second model to open a side-by-side page.

Total Output Tokens

Score vs Total Output Tokens

Quick Compare

Mercury 2.5lowvsQwen3 Coder NextnoneMercury 2.5lowvsMiMo-V2.5noneMercury 2.5lowvsGranite 4.2 8BlowMercury 2.5lowvsQwen3.5-9BnoneMercury 2.5lowvsMistral Small 4mediumMercury 2.5lowvsNorth Mini CodenoneFree AvailableMercury 2.5lowvsMistral Small 4noneMercury 2.5lowvsMiniMax M2.7mediumMercury 2.5lowvsNemotron 3.5 LightningmediumFree AvailableMercury 2.5lowvsMercury 2.5 Previewlow

Category Breakdown

Category Score Consistency Tests Correct
Anti-AI Tricks 6.9 7.9
Coding 5.5 10.0
Combined 3.0 10.0
Data parsing and extraction 6.5 10.0
Domain specific 3.6 7.2
General Intelligence 4.4 9.9
Instructions following 2.9 6.0
Puzzle Solving 5.9 4.5
Tool Calling 9.8 10.0
Trivia 3.0 10.0

Compared models