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

Gemini 3 Flash Preview (medium) leads on average score with 9.5 vs 8.2. Gemini 2.5 Flash (medium) has the lower benchmark cost at $0.644 vs $0.763. Gemini 3 Flash Preview (medium) is faster at 19.86s vs 21.14s, with pass rates of 71.2% vs 93.9%.

Last updated at: 2026-09-18

Compared models

Rank
#66
Total Output Tokens
241,365
Response Time (avg)
21.14s
Total Cost
$0.644
Rank
#10
Total Output Tokens
239,608
Response Time (avg)
19.86s
Total Cost
$0.763
Recommended model Gemini 3 Flash Preview (medium)

It has the strongest score in this comparison (9.5) and the best overall balance of cost and response time across all 2 models.

Detailed comparison

Metric Gemini 2.5 Flash Gemini 2.5 Flash medium Release: 2025-06-17 Gemini 3 Flash Preview Gemini 3 Flash Preview medium Release: 2025-12-17
Score 8.2 9.5
Rank #66 #10
Reliability 10.0 10.0
Consistency 9.6 9.7
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 71.2% 93.9%
Flaky tests 1 1
Total Runs 66 66
Cost per result 4.288 3.814
Total Cost $0.644 $0.763
Input Price $0.300 / 1M $0.500 / 1M
Output Price $2.500 / 1M $3.000 / 1M
Total Input Tokens 132,507 87,870
Output Tokens 12,739 5,486
Reasoning Tokens 228,626 234,122
Response Time (avg) 21.14s 19.86s
Response Time (max) 140.50s 117.26s
Response Time (total) 465.10s 436.88s
Parameters ~350B total (~20B active) ~500B total (~20B active)
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

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

#66 Gemini 2.5 Flash

medium
No output was saved. The original provider response or failure reason is unavailable.
Cost
$0.000
Time
274.0s
Tokens
0 tok

#10 Gemini 3 Flash Preview

medium
Cost
$0.010
Time
18.4s
Tokens
3,351 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 2.5 Flash 7.8 10.0 66.7% 0 41.01s 6,669 543 32,303
Gemini 3 Flash Preview 8.6 7.6 88.9% 1 84.40s 8,122 462 161,084

Quick Compare

Switch Comparison Pair

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