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Gemini 2.5 Flash (medium) vs GPT-6 Luna (high)

The average score is effectively tied at 8.2 vs 8.3. GPT-6 Luna (high) has the lower benchmark cost at $0.054 vs $0.644. GPT-6 Luna (high) is faster at 17.53s vs 21.14s, with pass rates of 71.2% vs 75.8%.

Last updated at: 2026-09-23

Compared models

Rank
#75
Total Output Tokens
241,365
Response Time (avg)
21.14s
Total Cost
$0.644
Rank
#73
Total Output Tokens
91,405
Response Time (avg)
17.53s
Total Cost
$0.054
Recommended model GPT-6 Luna (high)

It has the best score here (8.3), while costing about 12.0x less than Gemini 2.5 Flash (medium).

Detailed comparison

Metric Gemini 2.5 Flash Gemini 2.5 Flash medium Release: 2025-06-17 GPT-6 Luna GPT-6 Luna high Release: 2026-09-23
Score 8.2 8.3
Rank #75 #73
Reliability 10.0 10.0
Consistency 9.6 9.0
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 71.2% 75.8%
Flaky tests 1 3
Total Runs 66 66
Cost per result 4.288 0.359
Total Cost $0.644 $0.054
Input Price $0.300 / 1M $0.100 / 1M
Output Price $2.500 / 1M $0.500 / 1M
Total Input Tokens 132,507 80,441
Output Tokens 12,739 4,761
Reasoning Tokens 228,626 86,644
Response Time (avg) 21.14s 17.53s
Response Time (max) 140.50s 106.93s
Response Time (total) 465.10s 385.74s
Parameters ~350B total (~20B active) ~400B total (~17B active)
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

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

#75 Gemini 2.5 Flash

medium
No output was saved. The original provider response or failure reason is unavailable.
Cost
$0.000
Time
274.0s
Tokens
0 tok

#73 GPT-6 Luna

high
Cost
$0.003
Time
49.2s
Tokens
5,231 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 2.5 Flash 7.8 10.0 66.7% 0 41.01s 6,669 543 32,303
GPT-6 Luna 7.8 7.4 77.8% 1 24.69s 7,302 483 15,691

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