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Google: Gemini 2.5 Flash vs OpenAI: gpt-oss-120b

Last updated at: 2026-04-16

Metric Gemini 2.5 Flash Gemini 2.5 Flash none Release: 2025-06-17 gpt-oss-120b gpt-oss-120b medium Release: 2025-08-05 Free Available
Score 6.2 5.8
Rank #61 #67
Consistency 9.2 7.2
Tests Correct
Attempt pass rate 44.4% 51.9%
Flaky tests 2 6
Total Runs 54 54
Cost per result 0.184 0.144
Total Cost $0.013 $0.011
Input Price $0.300 / 1M $0.039 / 1M
Output Price $2.500 / 1M $0.190 / 1M
Output Tokens 1,726 13,493
Reasoning Tokens 0 36,879
Response Time (avg) 903ms 16.08s
Response Time (max) 4.39s 50.92s
Response Time (total) 16.26s 176.88s

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Category Breakdown

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 2.5 Flash 3.0 10.0 0.0% 0 582ms 102 0
gpt-oss-120b 6.7 9.9 50.0% 0 10.21s 3,518 2,177
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 2.5 Flash 10.0 10.0 100.0% 0 1.16s 453 0
gpt-oss-120b 4.3 1.1 66.7% 1 26.33s 228 2,549
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 2.5 Flash 3.0 10.0 0.0% 0 4.39s 366 0
gpt-oss-120b 10.0 10.0 100.0% 0 31.18s 694 5,072
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 2.5 Flash 10.0 10.0 100.0% 0 652ms 279 0
gpt-oss-120b 6.4 5.9 66.7% 1 1.98s 241 1,114
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 2.5 Flash 5.9 7.2 55.6% 1 495ms 12 0
gpt-oss-120b 2.9 4.4 22.2% 2 50.92s 6,784 20,606
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 2.5 Flash 5.0 10.0 0.0% 0 615ms 78 0
gpt-oss-120b 4.3 10.0 0.0% 0 7.90s 107 387
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 2.5 Flash 8.0 6.8 66.7% 1 672ms 70 0
gpt-oss-120b 9.9 10.0 100.0% 0 7.63s 126 1,799
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 2.5 Flash 5.7 10.0 33.3% 0 576ms 132 0
gpt-oss-120b 3.2 4.7 22.2% 2 11.80s 1,508 2,092
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 2.5 Flash 10.0 10.0 100.0% 0 1.91s 234 0
gpt-oss-120b 9.8 10.0 100.0% 0 6.91s 287 1,083

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