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Claude Haiku 5.5 (medium) vs GPT-6 Luna (low)

Claude Haiku 5.5 (medium) leads on average score with 7.7 vs 7.6. GPT-6 Luna (low) has the lower benchmark cost at $0.033 vs $0.063. Claude Haiku 5.5 (medium) is faster at 7.71s vs 23.23s, with pass rates of 71.0% vs 63.8%.

Last updated at: 2026-10-07

Compared models

Rank
#120
Total Output Tokens
66,174
Response Time (avg)
7.71s
Total Cost
$0.063
Rank
#125
Total Output Tokens
24,880
Response Time (avg)
23.23s
Total Cost
$0.033
Recommended model Claude Haiku 5.5 (medium)

It has the best score here (7.7), while responding about 3.0x faster than GPT-6 Luna (low).

Detailed comparison

Metric Claude Haiku 5.5 Claude Haiku 5.5 medium Release: 2026-10-07 GPT-6 Luna GPT-6 Luna low Release: 2026-09-23
Score 7.7 7.6
Rank #120 #125
Reliability 10.0 9.7
Consistency 7.5 8.5
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 71.0% 63.8%
Flaky tests 7 4
Total Runs 69 69
Cost per result 0.485 0.267
Total Cost $0.063 $0.033
Input Price $0.100 / 1M $0.100 / 1M
Output Price $0.500 / 1M $0.500 / 1M
Cache Read Price $0.010 / 1M $0.010 / 1M
Cache Write Price $0.125 / 1M $0.125 / 1M
Total Input Tokens 298,334 195,928
Output Tokens 10,328 5,728
Reasoning Tokens 55,846 19,152
Response Time (avg) 7.71s 23.23s
Response Time (max) 47.70s 89.37s
Response Time (total) 177.29s 534.22s
Parameters ~50B ~400B total (~17B 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.

#120 Claude Haiku 5.5

medium
Cost
$0.002
Time
17.2s
Tokens
3,524 tok

#125 GPT-6 Luna

low
Cost
$0.002
Time
19.2s
Tokens
2,598 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 Haiku 5.5 6.3 4.8 66.7% 2 7.16s 10,608 518 11,415
GPT-6 Luna 6.0 7.2 55.6% 1 15.39s 7,302 493 6,655

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