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Google: Gemini 3.5 Flash vs OpenAI: GPT-5.6 Sol

Summary

Gemini 3.5 Flash (low) vs GPT-5.6 Sol (high) benchmark comparison: GPT-5.6 Sol (high) leads on average score with 9.4 vs 9.2. Gemini 3.5 Flash (low) has the lower benchmark cost at $0.349 vs $0.821. Gemini 3.5 Flash (low) is faster at 3.27s vs 10.56s, with pass rates of 90.5% vs 88.9%.

Recommended model: Gemini 3.5 Flash (low) - Its score stays close to the best score here (9.2 vs 9.4), while costing about 2.4x less than GPT-5.6 Sol (high).

Last updated at: 2026-07-09

Metric Gemini 3.5 Flash Gemini 3.5 Flash low Release: 2026-05-19 GPT-5.6 Sol GPT-5.6 Sol high Release: 2026-07-09
Score 9.2 9.4
Rank #8 #6
Reliability 10.0 10.0
Consistency 10.0 8.8
Tests Correct
Attempt pass rate 90.5% 88.9%
Flaky tests 0 3
Total Runs 63 63
Cost per result 1.834 4.824
Total Cost $0.349 $0.821
Input Price $1.500 / 1M $5.000 / 1M
Output Price $9.000 / 1M $30.000 / 1M
Total Input Tokens 36,938 34,114
Output Tokens 2,033 1,872
Reasoning Tokens 30,519 19,777
Response Time (avg) 3.27s 10.56s
Response Time (max) 9.05s 54.79s
Response Time (total) 68.65s 221.69s

Generation showcase

Hamster playing table tennis

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

#8 Gemini 3.5 Flash

low
Cost
$0.068
Time
39.1s
Tokens
7,588 tok

#6 GPT-5.6 Sol

high
Cost
$0.151
Time
201.9s
Tokens
5,100 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 2.52s 494 209 2,536
GPT-5.6 Sol 8.7 7.9 91.7% 1 3.39s 606 171 644
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 7.8 10.0 66.7% 0 6.71s 8,118 458 13,420
GPT-5.6 Sol 10.0 10.0 100.0% 0 12.52s 7,302 404 5,656
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 6.44s 12,873 351 3,050
GPT-5.6 Sol 10.0 10.0 100.0% 0 13.68s 11,019 315 1,599
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 1.81s 7,548 279 1,164
GPT-5.6 Sol 10.0 10.0 100.0% 0 1.16s 7,140 222 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 7.7 10.0 66.7% 0 3.39s 633 12 4,538
GPT-5.6 Sol 5.3 7.2 44.4% 1 39.45s 619 62 9,556
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 2.27s 486 119 916
GPT-5.6 Sol 10.0 10.0 100.0% 0 4.40s 477 97 238
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 9.9 10.0 100.0% 0 1.86s 615 71 1,652
GPT-5.6 Sol 10.0 10.0 100.0% 0 2.73s 660 96 331
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 2.35s 558 288 2,150
GPT-5.6 Sol 10.0 10.0 100.0% 0 4.10s 642 211 675
Tool Calling 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 3.27s 5,457 234 403
GPT-5.6 Sol 10.0 10.0 100.0% 0 7.08s 5,454 264 393
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 1.88s 156 12 690
GPT-5.6 Sol 4.7 1.6 66.7% 1 6.97s 195 30 685

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