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Gemini 3 Flash Preview (low) vs Mercury 2.5 Preview (medium)

Gemini 3 Flash Preview (low) leads on average score with 6.9 vs 6.8. Mercury 2.5 Preview (medium) has the lower benchmark cost at $0.039 vs $0.254. Mercury 2.5 Preview (medium) is faster at 6.66s vs 8.51s, with pass rates of 72.5% vs 66.7%.

Last updated at: 2026-10-07

Compared models

Rank
#171
Total Output Tokens
42,400
Response Time (avg)
8.51s
Total Cost
$0.254
Rank
#182
Total Output Tokens
150,107
Response Time (avg)
6.66s
Total Cost
$0.039
Recommended model Mercury 2.5 Preview (medium)

Its score stays close to the best score here (6.8 vs 6.9), while costing about 6.6x less than Gemini 3 Flash Preview (low).

Detailed comparison

Metric Gemini 3 Flash Preview Gemini 3 Flash Preview low Release: 2025-12-17 Mercury 2.5 Preview Mercury 2.5 Preview medium Release: 2026-09-02
Score 6.9 6.8
Rank #171 #182
Reliability 10.0 10.0
Consistency 9.3 9.6
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 72.5% 66.7%
Flaky tests 2 1
Total Runs 69 69
Cost per result 1.582 0.244
Total Cost $0.254 $0.039
Input Price $0.500 / 1M $0.040 / 1M
Output Price $3.000 / 1M $0.150 / 1M
Cache Read Price $0.050 / 1M N/A
Cache Write Price $0.084 / 1M N/A
Total Input Tokens 251,677 397,291
Output Tokens 11,196 6,355
Reasoning Tokens 31,204 143,752
Response Time (avg) 8.51s 6.66s
Response Time (max) 52.64s 74.63s
Response Time (total) 195.76s 153.29s
Parameters ~500B total (~20B active) ~100B
Availability Closed Closed

Cache prices apply to input tokens. Reads reuse cached prompts; writes store them and can cost extra. Output tokens use the output price.

Model generation showcase

Hamster playing table tennis

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

#171 Gemini 3 Flash Preview

low
Cost
$0.007
Time
12.1s
Tokens
2,289 tok

#182 Mercury 2.5 Preview

medium
Cost
$0.001
Time
2.7s
Tokens
2,241 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 5.8 7.2 44.4% 1 6.00s 8,122 456 7,421
Mercury 2.5 Preview 7.8 10.0 66.7% 0 3.86s 7,839 552 22,126

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