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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: Gemini 3.1 Flash Lite leads on average score with 7.8 vs 7.5. Gemini 3.1 Flash Lite has the lower benchmark cost at $0.071 vs $0.433. Gemini 3.1 Flash Lite is faster at 3.23s vs 6.34s, with pass rates of 65.1% vs 66.7%.

Recommended model: Gemini 3.1 Flash Lite - It has the best score here (7.8), while costing about 6.2x less than GPT-5.3 Chat.

Last updated at: 2026-06-18

Metric Gemini 3.1 Flash Lite Gemini 3.1 Flash Lite medium Release: 2026-05-08 GPT-5.3 Chat GPT-5.3 Chat none Release: 2026-03-03
Score 7.8 7.5
Rank #34 #45
Reliability 10.0 10.0
Consistency 9.2 8.1
Tests Correct
Attempt pass rate 65.1% 66.7%
Flaky tests 2 5
Total Runs 63 63
Cost per result 0.539 3.605
Total Cost $0.071 $0.433
Input Price $0.250 / 1M $1.750 / 1M
Output Price $1.500 / 1M $14.000 / 1M
Total Input Tokens 36,808 34,209
Output Tokens 2,254 26,617
Reasoning Tokens 38,300 0
Response Time (avg) 3.23s 6.34s
Response Time (max) 10.87s 18.33s
Response Time (total) 67.80s 133.13s

Generation showcase

Hamster playing table tennis

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

#34 Gemini 3.1 Flash Lite

medium
Cost
$0.003
Time
5.3s
Tokens
1,754 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 9.1 10.0 75.0% 0 2.39s 502 604 4,201
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 3.81s 8,134 459 8,978
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 10.0 10.0 100.0% 0 10.87s 12,873 327 7,401
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 2.60s 7,362 279 2,845
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 2.9 7.2 11.1% 1 3.16s 643 15 5,165
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 10.0 10.0 100.0% 0 2.60s 488 84 1,142
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 9.9 10.0 100.0% 0 2.59s 623 75 3,320
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 7.6 7.2 77.8% 1 1.95s 568 165 2,450
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 4.55s 5,457 234 921
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 3.08s 158 12 1,877
GPT-5.3 Chat 3.0 10.0 0.0% 0 4.38s 195 569 0

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