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

The average score is effectively tied at 7.7 vs 7.7. Claude Haiku 5.5 (medium) has the lower benchmark cost at $0.063 vs $0.074. Claude Haiku 5.5 (medium) is faster at 7.71s vs 20.37s, with pass rates of 71.0% vs 73.9%.

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
#118
Total Output Tokens
101,587
Response Time (avg)
20.37s
Total Cost
$0.074
Recommended model Claude Haiku 5.5 (medium)

It has the best score here (7.7), while responding about 2.6x faster than GPT-6 Luna (high).

Detailed comparison

Metric Claude Haiku 5.5 Claude Haiku 5.5 medium Release: 2026-10-07 GPT-6 Luna GPT-6 Luna high Release: 2026-09-23
Score 7.7 7.7
Rank #120 #118
Reliability 10.0 10.0
Consistency 7.5 8.7
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 71.0% 73.9%
Flaky tests 7 4
Total Runs 69 69
Cost per result 0.485 0.492
Total Cost $0.063 $0.074
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 298,334 229,986
Output Tokens 10,328 6,037
Reasoning Tokens 55,846 95,550
Response Time (avg) 7.71s 20.37s
Response Time (max) 47.70s 106.93s
Response Time (total) 177.29s 468.52s
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

#118 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 Haiku 5.5 6.3 4.8 66.7% 2 7.16s 10,608 518 11,415
GPT-6 Luna 7.8 7.4 77.8% 1 24.69s 7,302 483 15,691

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