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Gemini 3.5 Flash (high) vs GPT-5.6 Terra (medium)

Gemini 3.5 Flash (high) leads on average score with 8.3 vs 8.2. GPT-5.6 Terra (medium) has the lower benchmark cost at $0.744 vs $2.737. GPT-5.6 Terra (medium) is faster at 8.93s vs 18.59s, with pass rates of 85.5% vs 71.0%.

Last updated at: 2026-10-01

Compared models

Rank
#77
Total Output Tokens
246,012
Response Time (avg)
18.59s
Total Cost
$2.737
Rank
#84
Total Output Tokens
33,189
Response Time (avg)
8.93s
Total Cost
$0.744
Recommended model GPT-5.6 Terra (medium)

Its score stays close to the best score here (8.2 vs 8.3), while costing about 3.7x less than Gemini 3.5 Flash (high).

Detailed comparison

Metric Gemini 3.5 Flash Gemini 3.5 Flash high Release: 2026-05-19 GPT-5.6 Terra GPT-5.6 Terra medium Release: 2026-07-09
Score 8.3 8.2
Rank #77 #84
Reliability 10.0 10.0
Consistency 9.3 9.3
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 85.5% 71.0%
Flaky tests 2 2
Total Runs 69 69
Cost per result 14.402 5.768
Total Cost $2.737 $0.744
Input Price $1.500 / 1M $2.000 / 1M
Output Price $9.000 / 1M $12.000 / 1M
Total Input Tokens 348,103 172,507
Output Tokens 11,045 5,824
Reasoning Tokens 234,967 27,365
Response Time (avg) 18.59s 8.93s
Response Time (max) 145.92s 54.74s
Response Time (total) 427.52s 205.39s
Parameters ~500B total (~20B active) ~1T total (~60B active)
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

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

#77 Gemini 3.5 Flash

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

#84 GPT-5.6 Terra

medium
Cost
$0.035
Time
16.3s
Tokens
2,418 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-5.6 Terra 6.1 7.2 55.6% 1 7.19s 7,302 427 4,527

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