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Google: Gemini 3 Flash Preview vs OpenAI: gpt-oss-120b

Summary

Gemini 3 Flash Preview (medium) vs gpt-oss-120b benchmark comparison: Gemini 3 Flash Preview (medium) leads on average score with 9.6 vs 4.0. gpt-oss-120b has the lower benchmark cost at $0.010 vs $0.667. Gemini 3 Flash Preview (medium) is faster at 18.64s vs 21.61s, with pass rates of 98.4% vs 34.9%.

Recommended model: Gemini 3 Flash Preview (medium) - It has the strongest score in this comparison (9.6) and the best overall balance of cost and response time across all 2 models.

Last updated at: 2026-07-09

Metric Gemini 3 Flash Preview Gemini 3 Flash Preview medium Release: 2025-12-17 gpt-oss-120b gpt-oss-120b none Release: 2025-08-05 Free Available
Score 9.6 4.0
Rank #2 #183
Reliability 10.0 10.0
Consistency 9.7 8.2
Tests Correct
Attempt pass rate 98.4% 34.9%
Flaky tests 1 2
Total Runs 63 57
Cost per result 3.335 0.168
Total Cost $0.667 $0.010
Input Price $0.500 / 1M $0.036 / 1M
Output Price $3.000 / 1M $0.180 / 1M
Total Input Tokens 37,017 9,081
Output Tokens 2,006 51,664
Reasoning Tokens 214,153 0
Response Time (avg) 18.64s 21.61s
Response Time (max) 117.26s 113.71s
Response Time (total) 391.35s 345.79s

Generation showcase

Hamster playing table tennis

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

#2 Gemini 3 Flash Preview

medium
Cost
$0.010
Time
17.9s
Tokens
3,236 tok

#183 gpt-oss-120b

none
No showcase result has been generated for this model yet.
Cost
$0.000
Time
-
Tokens
0 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 Flash Preview 10.0 10.0 100.0% 0 3.88s 494 330 3,216
gpt-oss-120b 6.5 10.0 50.0% 0 32.84s 1,336 8,676 0
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 8.6 7.6 88.9% 1 84.40s 8,122 462 161,084
gpt-oss-120b 1.5 4.0 22.2% 1 9.57s 901 3,232 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 22.42s 12,873 351 10,485
gpt-oss-120b 3.0 10.0 0.0% 0 0ms 0 0 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 Flash Preview 10.0 10.0 100.0% 0 5.43s 7,548 279 4,893
gpt-oss-120b 6.5 10.0 50.0% 0 7.12s 2,421 598 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 15.27s 633 12 21,684
gpt-oss-120b 3.0 10.0 0.0% 0 34.98s 1,294 29,483 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 5.19s 486 72 1,905
gpt-oss-120b 4.8 10.0 0.0% 0 10.79s 584 615 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 4.04s 615 72 2,709
gpt-oss-120b 9.8 10.0 100.0% 0 5.06s 1,043 1,940 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 4.05s 558 183 4,365
gpt-oss-120b 6.0 7.2 55.6% 1 8.21s 1,188 3,982 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 12.60s 5,532 234 1,487
gpt-oss-120b 3.0 10.0 0.0% 0 0ms 0 0 0
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 5.50s 156 11 2,325
gpt-oss-120b 3.0 10.0 0.0% 0 47.29s 314 3,138 0

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