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Google: Gemini 3.1 Flash Lite vs OpenAI: GPT-5.3 Chat

Summary

Gemini 3.1 Flash Lite vs GPT-5.3 Chat benchmark comparison: GPT-5.3 Chat leads on average score with 7.5 vs 6.4. Gemini 3.1 Flash Lite has the lower benchmark cost at $0.028 vs $0.433. Gemini 3.1 Flash Lite is faster at 1.89s vs 6.34s, with pass rates of 61.9% vs 66.7%.

Recommended model: Gemini 3.1 Flash Lite - It offers the best overall trade-off: a competitive score (6.4), lower cost than GPT-5.3 Chat, and balanced response time.

Last updated at: 2026-06-18

Metric Gemini 3.1 Flash Lite Gemini 3.1 Flash Lite low Release: 2026-05-08 GPT-5.3 Chat GPT-5.3 Chat none Release: 2026-03-03
Score 6.4 7.5
Rank #85 #45
Reliability 10.0 10.0
Consistency 9.3 8.1
Tests Correct
Attempt pass rate 61.9% 66.7%
Flaky tests 2 5
Total Runs 63 63
Cost per result 0.227 3.605
Total Cost $0.028 $0.433
Input Price $0.250 / 1M $1.750 / 1M
Output Price $1.500 / 1M $14.000 / 1M
Total Input Tokens 36,892 34,209
Output Tokens 2,732 26,617
Reasoning Tokens 9,260 0
Response Time (avg) 1.89s 6.34s
Response Time (max) 5.66s 18.33s
Response Time (total) 39.62s 133.13s

Generation showcase

Hamster playing table tennis

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

#85 Gemini 3.1 Flash Lite

low
Cost
$0.003
Time
4.0s
Tokens
1,479 tok

#45 GPT-5.3 Chat

none
Cost
$0.008
Time
8.1s
Tokens
634 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 3.1 Flash Lite 7.3 6.2 75.0% 2 1.84s 500 1,013 1,548
GPT-5.3 Chat 6.7 8.1 58.3% 1 3.86s 606 3,167 0
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite 5.5 10.0 33.3% 0 1.53s 8,132 471 1,072
GPT-5.3 Chat 5.6 4.7 55.6% 2 10.52s 7,302 6,632 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite 3.0 10.0 0.0% 0 4.48s 12,870 348 975
GPT-5.3 Chat 10.0 10.0 100.0% 0 11.96s 11,019 2,614 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite 10.0 10.0 100.0% 0 1.44s 7,453 291 697
GPT-5.3 Chat 10.0 10.0 100.0% 0 2.21s 7,140 942 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite 5.3 10.0 33.3% 0 1.52s 639 15 1,214
GPT-5.3 Chat 3.5 4.4 33.3% 2 13.01s 723 8,264 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite 4.0 10.0 0.0% 0 1.37s 492 69 438
GPT-5.3 Chat 4.6 10.0 0.0% 0 1.99s 477 319 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite 10.0 10.0 100.0% 0 1.52s 619 72 760
GPT-5.3 Chat 9.8 10.0 100.0% 0 3.51s 660 1,491 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite 10.0 10.0 100.0% 0 1.40s 570 210 1,191
GPT-5.3 Chat 10.0 10.0 100.0% 0 2.99s 642 1,758 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite 10.0 10.0 100.0% 0 5.66s 5,457 234 945
GPT-5.3 Chat 10.0 10.0 100.0% 0 8.36s 5,445 861 0
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite 3.0 10.0 0.0% 0 1.46s 160 9 420
GPT-5.3 Chat 3.0 10.0 0.0% 0 4.38s 195 569 0

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