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Gemini 3 Flash Preview vs Mercury 2.5 (medium)

The average score is effectively tied at 6.8 vs 6.8. Mercury 2.5 (medium) has the lower benchmark cost at $0.022 vs $0.085. Gemini 3 Flash Preview is faster at 2.82s vs 3.19s, with pass rates of 65.2% vs 65.2%.

Last updated at: 2026-09-08

Compared models

Rank
#158
Total Output Tokens
10,710
Response Time (avg)
2.82s
Total Cost
$0.085
Rank
#157
Total Output Tokens
120,129
Response Time (avg)
3.19s
Total Cost
$0.022
Recommended model Mercury 2.5 (medium)

It has the best score here (6.8), while costing about 3.9x less than Gemini 3 Flash Preview.

Detailed comparison

Metric Gemini 3 Flash Preview Gemini 3 Flash Preview none Release: 2025-12-17 Mercury 2.5 Mercury 2.5 medium Release: 2026-09-08
Score 6.8 6.8
Rank #158 #157
Reliability 10.0 9.8
Consistency 8.9 8.6
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 65.2% 65.2%
Flaky tests 3 4
Total Runs 66 66
Cost per result 0.648 0.181
Total Cost $0.085 $0.022
Input Price $0.500 / 1M $0.040 / 1M
Output Price $3.000 / 1M $0.150 / 1M
Total Input Tokens 104,217 91,402
Output Tokens 10,710 3,138
Reasoning Tokens 0 116,991
Response Time (avg) 2.82s 3.19s
Response Time (max) 21.19s 9.87s
Response Time (total) 45.05s 70.18s
Parameters ~500B total (~20B active) ~100B
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

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

#158 Gemini 3 Flash Preview

none
Cost
$0.003
Time
5.6s
Tokens
981 tok

#157 Mercury 2.5

medium
Cost
$0.001
Time
3.8s
Tokens
3,386 tok

Top Models by Score

Score vs Total Cost

Response Time (avg)

Score vs Response Time (avg)

Total Output Tokens

Score vs Total Output Tokens

Category Breakdown

Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 5.5 10.0 33.3% 0 1.80s 8,122 453 0
Mercury 2.5 5.0 5.1 44.5% 2 3.70s 7,807 488 21,857

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