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Gemini 3.5 Flash (high) vs GPT-5.5 (medium)

GPT-5.5 (medium) leads on average score with 9.2 vs 8.3. Gemini 3.5 Flash (high) has the lower benchmark cost at $2.737 vs $4.809. Gemini 3.5 Flash (high) is faster at 18.59s vs 39.86s, with pass rates of 85.5% vs 88.4%.

Last updated at: 2026-10-24

Compared models

Rank
#95
Total Output Tokens
246,012
Response Time (avg)
18.59s
Total Cost
$2.737
Rank
#33
Total Output Tokens
130,107
Response Time (avg)
39.86s
Total Cost
$4.809
Recommended model Gemini 3.5 Flash (high)

It offers the best overall trade-off: a competitive score (8.3), lower cost than GPT-5.5 (medium), and balanced response time.

Detailed comparison

Metric Gemini 3.5 Flash Gemini 3.5 Flash high Release: 2026-05-19 GPT-5.5 GPT-5.5 medium Release: 2026-04-24
Score 8.3 9.2
Rank #95 #33
Reliability 10.0 10.0
Consistency 9.3 9.0
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 85.5% 88.4%
Flaky tests 2 3
Total Runs 69 69
Cost per result 14.402 25.306
Total Cost $2.737 $4.809
Input Price $1.500 / 1M $5.000 / 1M
Output Price $9.000 / 1M $30.000 / 1M
Cache Read Price $0.150 / 1M $0.500 / 1M
Cache Write Price $0.084 / 1M N/A
Total Input Tokens 348,103 180,959
Output Tokens 11,045 6,472
Reasoning Tokens 234,967 123,635
Response Time (avg) 18.59s 39.86s
Response Time (max) 145.92s 332.10s
Response Time (total) 427.52s 916.82s
Parameters ~500B total (~20B active) ~1.5T total (~100B active)
Availability Closed Closed

Cache prices apply to input tokens. Reads reuse cached prompts; writes store them and can cost extra. Output tokens use the output price.

Model generation showcase

Hamster playing table tennis

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

#95 Gemini 3.5 Flash

high
Cost
$0.208
Time
118.2s
Tokens
23,158 tok

#33 GPT-5.5

medium
Cost
$0.112
Time
71.9s
Tokens
3,807 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 3.5 Flash 10.0 10.0 100.0% 0 22.96s 8,118 456 47,129
GPT-5.5 8.8 7.8 88.9% 1 59.77s 7,305 362 24,959

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