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Google: Gemini 3.5 Flash vs MoonshotAI: Kimi K2.5

Summary

Gemini 3.5 Flash (high) vs Kimi K2.5 benchmark comparison: Gemini 3.5 Flash (high) leads on average score with 9.8 vs 5.5. Kimi K2.5 has the lower benchmark cost at $0.027 vs $1.115. Gemini 3.5 Flash (high) is faster at 8.84s vs 13.18s, with pass rates of 96.8% vs 34.9%.

Recommended model: Gemini 3.5 Flash (high) - It has the strongest score in this comparison (9.8) and the best overall balance of cost and response time across all 2 models.

Last updated at: 2026-07-09

Metric Gemini 3.5 Flash Gemini 3.5 Flash high Release: 2026-05-19 Kimi K2.5 Kimi K2.5 none Release: 2026-01-27
Score 9.8 5.5
Rank #1 #135
Reliability 10.0 10.0
Consistency 9.6 8.9
Tests Correct
Attempt pass rate 96.8% 34.9%
Flaky tests 1 3
Total Runs 63 63
Cost per result 5.575 0.442
Total Cost $1.115 $0.027
Input Price $1.500 / 1M $0.375 / 1M
Output Price $9.000 / 1M $2.025 / 1M
Total Input Tokens 37,594 36,034
Output Tokens 1,975 6,657
Reasoning Tokens 115,638 0
Response Time (avg) 8.84s 13.18s
Response Time (max) 34.82s 42.13s
Response Time (total) 185.57s 184.47s

Generation showcase

Hamster playing table tennis

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

#1 Gemini 3.5 Flash

high
Cost
$0.208
Time
118.2s
Tokens
23,158 tok

#135 MoonshotAI: Kimi K2.5

none
Cost
$0.015
Time
89.1s
Tokens
5,421 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

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 2.57s 492 174 4,997
Kimi K2.5 3.6 8.4 8.3% 1 6.24s 652 373 0
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 22.96s 8,118 456 47,129
Kimi K2.5 5.5 10.0 33.3% 0 24.56s 7,311 4,708 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 22.37s 12,873 351 16,323
Kimi K2.5 2.8 2.1 33.3% 1 19.16s 12,264 748 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 6.43s 7,548 279 8,466
Kimi K2.5 7.3 5.8 83.3% 1 42.13s 7,180 187 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 7.6 7.2 77.8% 1 14.09s 633 12 24,721
Kimi K2.5 5.3 10.0 33.3% 0 4.38s 753 29 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 3.63s 486 115 1,650
Kimi K2.5 10.0 10.0 100.0% 0 4.00s 483 76 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 3.35s 615 70 3,799
Kimi K2.5 6.5 10.0 50.0% 0 2.67s 677 60 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 3.23s 558 241 4,940
Kimi K2.5 3.0 10.0 0.0% 0 4.04s 667 236 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 9.8 10.0 100.0% 0 4.96s 6,115 265 1,608
Kimi K2.5 10.0 10.0 100.0% 0 13.99s 5,835 220 0
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 3.94s 156 12 2,005
Kimi K2.5 3.0 10.0 0.0% 0 3.90s 212 20 0

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