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Google: Gemini 3.5 Flash vs OpenAI: gpt-oss-120b

Summary

Gemini 3.5 Flash vs gpt-oss-120b benchmark comparison: Gemini 3.5 Flash leads on average score with 9.8 vs 6.7. gpt-oss-120b has the lower benchmark cost at $0.011 vs $1.115. Gemini 3.5 Flash is faster at 8.84s vs 22.28s, with pass rates of 96.8% vs 52.4%.

Recommended model: Gemini 3.5 Flash - It has the best score here (9.8), while responding about 2.5x faster than gpt-oss-120b.

Last updated at: 2026-07-02

Metric Gemini 3.5 Flash Gemini 3.5 Flash high Release: 2026-05-19 gpt-oss-120b gpt-oss-120b medium Release: 2025-08-05 Free Available
Score 9.8 6.7
Rank #1 #81
Reliability 10.0 10.0
Consistency 9.6 8.0
Tests Correct
Attempt pass rate 96.8% 52.4%
Flaky tests 1 5
Total Runs 63 63
Cost per result 5.575 0.141
Total Cost $1.115 $0.011
Input Price $1.500 / 1M $0.030 / 1M
Output Price $9.000 / 1M $0.150 / 1M
Total Input Tokens 37,594 39,084
Output Tokens 1,975 20,013
Reasoning Tokens 115,638 50,233
Response Time (avg) 8.84s 22.28s
Response Time (max) 34.82s 68.16s
Response Time (total) 185.57s 311.96s

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

#81 gpt-oss-120b

medium
Cost
$0.001
Time
26.7s
Tokens
555 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
gpt-oss-120b 6.7 9.9 50.0% 0 10.21s 1,314 3,518 2,177
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
gpt-oss-120b 5.9 7.0 55.6% 1 38.37s 7,782 3,365 11,973
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
gpt-oss-120b 10.0 10.0 100.0% 0 31.18s 11,535 694 5,072
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
gpt-oss-120b 6.4 5.9 66.7% 1 1.98s 7,476 241 1,114
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
gpt-oss-120b 2.9 4.4 22.2% 2 50.92s 1,266 6,784 20,606
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
gpt-oss-120b 4.3 10.0 0.0% 0 7.90s 659 107 387
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
gpt-oss-120b 9.9 10.0 100.0% 0 7.63s 1,036 126 1,799
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
gpt-oss-120b 5.3 7.2 44.4% 1 21.71s 1,190 1,790 2,264
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
gpt-oss-120b 9.8 10.0 100.0% 0 6.91s 6,514 287 1,083
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
gpt-oss-120b 3.0 10.0 0.0% 0 26.51s 312 3,101 3,758

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