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Claude Sonnet 5 (medium) vs GPT-6 Luna (high)

GPT-6 Luna (high) leads on average score with 8.3 vs 8.2. GPT-6 Luna (high) has the lower benchmark cost at $0.054 vs $0.922. Claude Sonnet 5 (medium) is faster at 12.54s vs 17.53s, with pass rates of 75.8% vs 75.8%.

Last updated at: 2026-09-23

Compared models

Rank
#77
Total Output Tokens
63,204
Response Time (avg)
12.54s
Total Cost
$0.922
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 17.1x less than Claude Sonnet 5 (medium).

Detailed comparison

Metric Claude Sonnet 5 Claude Sonnet 5 medium Release: 2026-06-30 GPT-6 Luna GPT-6 Luna high Release: 2026-09-23
Score 8.2 8.3
Rank #77 #73
Reliability 10.0 10.0
Consistency 9.0 9.0
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 75.8% 75.8%
Flaky tests 3 3
Total Runs 66 66
Cost per result 6.144 0.359
Total Cost $0.922 $0.054
Input Price $2.000 / 1M $0.100 / 1M
Output Price $10.000 / 1M $0.500 / 1M
Total Input Tokens 145,953 80,441
Output Tokens 52,330 4,761
Reasoning Tokens 10,874 86,644
Response Time (avg) 12.54s 17.53s
Response Time (max) 66.71s 106.93s
Response Time (total) 275.90s 385.74s
Parameters ~1T total (~100B 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.

#77 Claude Sonnet 5

medium
Cost
$0.007
Time
6.4s
Tokens
832 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
Claude Sonnet 5 9.0 7.9 88.9% 1 17.28s 10,590 13,153 2,379
GPT-6 Luna 7.8 7.4 77.8% 1 24.69s 7,302 483 15,691

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