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Claude Sonnet 5.5 (xhigh) vs GLM 5.3 FlashX (max)

The average score is effectively tied at 8.3 vs 8.3. GLM 5.3 FlashX (max) has the lower benchmark cost at $0.508 vs $1.069. Claude Sonnet 5.5 (xhigh) is faster at 13.17s vs 41.21s, with pass rates of 78.8% vs 78.8%.

Last updated at: 2026-09-29

Compared models

Rank
#79
Total Output Tokens
77,105
Response Time (avg)
13.17s
Total Cost
$1.069
Rank
#76
Total Output Tokens
375,734
Response Time (avg)
41.21s
Total Cost
$0.508
Recommended model GLM 5.3 FlashX (max)

It has the best score here (8.3), while costing about 2.1x less than Claude Sonnet 5.5 (xhigh).

Detailed comparison

Metric Claude Sonnet 5.5 Claude Sonnet 5.5 xhigh Release: 2026-09-29 GLM 5.3 FlashX GLM 5.3 FlashX max Release: 2026-09-21
Score 8.3 8.3
Rank #79 #76
Reliability 10.0 10.0
Consistency 8.7 8.3
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 78.8% 78.8%
Flaky tests 4 5
Total Runs 66 66
Cost per result 7.123 3.381
Total Cost $1.069 $0.508
Input Price $2.000 / 1M $0.370 / 1M
Output Price $10.000 / 1M $1.250 / 1M
Total Input Tokens 148,643 101,211
Output Tokens 9,700 6,301
Reasoning Tokens 67,405 369,433
Response Time (avg) 13.17s 41.21s
Response Time (max) 54.91s 390.70s
Response Time (total) 289.67s 906.52s
Parameters ~1T total (~100B active) 320B total (18B active)
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

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

#79 Claude Sonnet 5.5

xhigh
Cost
$0.319
Time
258.6s
Tokens
31,969 tok

#76 GLM 5.3 FlashX

max
Cost
$0.046
Time
251.3s
Tokens
36,769 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 5.5 8.2 7.2 88.9% 1 11.90s 10,608 555 9,501
GLM 5.3 FlashX 8.2 7.2 88.9% 1 24.61s 7,317 463 36,503

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