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LongCat 2.0 vs GPT-5.6 Luna (low)

GPT-5.6 Luna (low) leads on average score with 6.9 vs 6.4. GPT-5.6 Luna (low) has the lower benchmark cost at $0.049 vs $0.104. GPT-5.6 Luna (low) is faster at 6.96s vs 8.50s, with pass rates of 42.0% vs 56.5%.

Last updated at: 2026-10-19

Compared models

Rank
#251
Total Output Tokens
17,473
Response Time (avg)
8.50s
Total Cost
$0.104
Rank
#198
Total Output Tokens
28,001
Response Time (avg)
6.96s
Total Cost
$0.049
Recommended model GPT-5.6 Luna (low)

It has the best score here (6.9), while costing about 2.1x less than LongCat 2.0.

Detailed comparison

Metric LongCat 2.0 LongCat 2.0 none Release: 2026-07-20 GPT-5.6 Luna GPT-5.6 Luna low Release: 2026-07-09
Score 6.4 6.9
Rank #251 #198
Reliability 10.0 10.0
Consistency 9.0 8.3
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 42.0% 56.5%
Flaky tests 3 5
Total Runs 69 69
Cost per result 1.298 2.428
Total Cost $0.104 $0.049
Input Price $0.300 / 1M $0.200 / 1M
Output Price $1.200 / 1M $1.200 / 1M
Cache Read Price $0.006 / 1M $0.020 / 1M
Cache Write Price N/A $0.250 / 1M
Total Input Tokens 276,199 202,680
Output Tokens 17,473 9,230
Reasoning Tokens 0 18,771
Response Time (avg) 8.50s 6.96s
Response Time (max) 81.77s 45.74s
Response Time (total) 195.60s 160.19s
Parameters 1.6T total (48B active) ~400B total (~17B active)
Availability Open source 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.

#251 LongCat 2.0

none
Cost
$0.027
Time
411.7s
Tokens
22,283 tok

#198 GPT-5.6 Luna

low
Cost
$0.011
Time
10.2s
Tokens
1,897 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
LongCat 2.0 5.5 10.0 33.3% 0 2.85s 7,446 578 0
GPT-5.6 Luna 5.5 10.0 33.3% 0 4.61s 7,302 557 3,535

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