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GPT-5.6 Luna (high) vs Solar Pro 4 (xhigh)

The average score is effectively tied at 7.6 vs 7.6. Solar Pro 4 (xhigh) has the lower benchmark cost at $0.150 vs $0.179. GPT-5.6 Luna (high) is faster at 16.49s vs 134.85s, with pass rates of 69.7% vs 60.6%.

Last updated at: 2026-09-24

Compared models

Rank
#112
Total Output Tokens
135,315
Response Time (avg)
16.49s
Total Cost
$0.179
Rank
#113
Total Output Tokens
389,450
Response Time (avg)
134.85s
Total Cost
$0.150
Recommended model GPT-5.6 Luna (high)

It has the best score here (7.6), while responding about 8.2x faster than Solar Pro 4 (xhigh).

Detailed comparison

Metric GPT-5.6 Luna GPT-5.6 Luna high Release: 2026-07-09 Solar Pro 4 Solar Pro 4 xhigh Release: 2026-08-11
Score 7.6 7.6
Rank #112 #113
Reliability 10.0 10.0
Consistency 8.5 9.4
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 69.7% 60.6%
Flaky tests 4 2
Total Runs 66 66
Cost per result 6.100 0.414
Total Cost $0.179 $0.150
Input Price $0.200 / 1M $0.090 / 1M
Output Price $1.200 / 1M $0.360 / 1M
Total Input Tokens 80,927 98,116
Output Tokens 5,088 21,720
Reasoning Tokens 130,227 367,730
Response Time (avg) 16.49s 134.85s
Response Time (max) 111.09s 491.42s
Response Time (total) 362.78s 2966.79s
Parameters ~400B total (~17B active) ~100B
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

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

#112 GPT-5.6 Luna

high
Cost
$0.033
Time
34.2s
Tokens
5,484 tok

#113 Solar Pro 4

xhigh
No showcase result has been generated for this model yet.
Cost
N/A
Time
-
Tokens
0 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
GPT-5.6 Luna 5.5 4.7 55.6% 2 15.63s 7,302 510 17,746
Solar Pro 4 5.8 9.9 33.3% 0 292.21s 7,887 15,575 115,426

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