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GPT 5.3 Chat (default) vs GLM 5.3 FlashX Legal (low)

The average score is effectively tied at 6.7 vs 6.7. GLM 5.3 FlashX Legal (low) has the lower benchmark cost at $0.135 vs $0.533. GPT 5.3 Chat (default) is faster at 6.31s vs 8.30s, with pass rates of 62.3% vs 55.1%.

Last updated at: 2026-11-10

Compared models

Rank
#243
Total Output Tokens
28,179
Response Time (avg)
6.31s
Total Cost
$0.533
Rank
#237
Total Output Tokens
37,995
Response Time (avg)
8.30s
Total Cost
$0.135
Recommended model GLM 5.3 FlashX Legal (low)

It has the best score here (6.7), while costing about 3.9x less than GPT 5.3 Chat (default).

Detailed comparison

Metric GPT 5.3 Chat GPT 5.3 Chat default Release: 2026-03-03 GLM 5.3 FlashX Legal GLM 5.3 FlashX Legal low Release: 2026-11-02
Score 6.7 6.7
Rank #243 #237
Reliability 10.0 9.7
Consistency 8.6 7.8
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 62.3% 55.1%
Flaky tests 4 6
Total Runs 69 69
Cost per result 4.097 1.349
Total Cost $0.533 $0.135
Input Price $1.750 / 1M $0.370 / 1M
Output Price $14.000 / 1M $1.250 / 1M
Cache Read Price N/A $0.075 / 1M
Cache Write Price N/A N/A
Total Input Tokens 78,846 236,104
Output Tokens 7,635 11,222
Reasoning Tokens 20,544 26,773
Response Time (avg) 6.31s 8.30s
Response Time (max) 18.33s 64.18s
Response Time (total) 138.73s 190.99s
Parameters ~400B total (~17B active) ~320B total (~18B 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.

#243 GPT 5.3 Chat

default
Cost
$0.008
Time
8.1s
Tokens
634 tok

#237 GLM 5.3 FlashX Legal

low
Cost
$0.003
Time
12.4s
Tokens
2,362 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 5.3 Chat 5.6 4.7 55.6% 2 10.52s 7,302 808 5,824
GLM 5.3 FlashX Legal 5.4 7.2 44.4% 1 5.90s 7,317 465 3,760

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