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Gemini 3.1 Flash Lite Preview vs GPT-5.3-Codex (medium)

GPT-5.3-Codex (medium) leads on average score with 8.9 vs 6.4. Gemini 3.1 Flash Lite Preview has the lower benchmark cost at $0.052 vs $0.988. Gemini 3.1 Flash Lite Preview is faster at 1.56s vs 16.91s, with pass rates of 57.6% vs 83.3%.

Last updated at: 2026-09-18

Compared models

Rank
#183
Total Output Tokens
14,161
Response Time (avg)
1.56s
Total Cost
$0.052
Rank
#32
Total Output Tokens
60,374
Response Time (avg)
16.91s
Total Cost
$0.988
Recommended model GPT-5.3-Codex (medium)

It has the strongest score in this comparison (8.9) and the best overall balance of cost and response time across all 2 models.

Detailed comparison

Metric Gemini 3.1 Flash Lite Preview Gemini 3.1 Flash Lite Preview none Release: 2026-03-03 GPT-5.3-Codex GPT-5.3-Codex medium Release: 2026-02-05
Score 6.4 8.9
Rank #183 #32
Reliability 10.0 10.0
Consistency 9.7 8.6
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 57.6% 83.3%
Flaky tests 1 4
Total Runs 66 66
Cost per result 0.430 6.171
Total Cost $0.052 $0.988
Input Price $0.250 / 1M $1.750 / 1M
Output Price $1.500 / 1M $14.000 / 1M
Total Input Tokens 120,955 81,187
Output Tokens 14,161 6,258
Reasoning Tokens 0 54,116
Response Time (avg) 1.56s 16.91s
Response Time (max) 9.27s 100.93s
Response Time (total) 34.32s 372.03s
Parameters ~150B total (~10B active) ~1.2T total (~80B active)
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

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

#183 Gemini 3.1 Flash Lite Preview

none
Cost
$0.003
Time
4.7s
Tokens
1,827 tok

#32 GPT-5.3-Codex

medium
Cost
$0.049
Time
54.9s
Tokens
3,580 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

Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite Preview 5.5 10.0 33.3% 0 967ms 8,128 670 0
GPT-5.3-Codex 10.0 10.0 100.0% 0 19.50s 7,302 535 10,890

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