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GPT 5.3 Chat vs Qwen3.5 Plus 2026-02-15 (medium)

The average score is effectively tied at 7.5 vs 7.5. Qwen3.5 Plus 2026-02-15 (medium) has the lower benchmark cost at $0.459 vs $0.533. GPT 5.3 Chat is faster at 6.56s vs 91.76s, with pass rates of 65.2% vs 72.7%.

Last updated at: 2026-09-10

Compared models

Rank
#105
Total Output Tokens
28,179
Response Time (avg)
6.56s
Total Cost
$0.533
Rank
#106
Total Output Tokens
274,709
Response Time (avg)
91.76s
Total Cost
$0.459
Recommended model GPT 5.3 Chat

It has the best score here (7.5), while responding about 14.0x faster than Qwen3.5 Plus 2026-02-15 (medium).

Detailed comparison

Metric GPT 5.3 Chat GPT 5.3 Chat none Release: 2026-03-03 Qwen3.5 Plus 2026-02-15 Qwen3.5 Plus 2026-02-15 medium Release: 2026-02-15
Score 7.5 7.5
Rank #105 #106
Reliability 10.0 10.0
Consistency 8.6 8.1
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 65.2% 72.7%
Flaky tests 4 5
Total Runs 66 66
Cost per result 4.097 3.483
Total Cost $0.533 $0.459
Input Price $1.750 / 1M $0.260 / 1M
Output Price $14.000 / 1M $1.560 / 1M
Total Input Tokens 78,846 113,569
Output Tokens 28,179 9,823
Reasoning Tokens 0 264,886
Response Time (avg) 6.56s 91.76s
Response Time (max) 18.33s 304.85s
Response Time (total) 137.77s 1376.42s
Parameters ~400B total (~17B active) ~397B total (~17B active)
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

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

#105 GPT 5.3 Chat

none
Cost
$0.008
Time
8.1s
Tokens
634 tok

#106 Qwen3.5 Plus 2026-02-15

medium
Cost
$0.011
Time
125.5s
Tokens
7,040 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 6,632 0
Qwen3.5 Plus 2026-02-15 6.6 7.1 44.4% 1 180.70s 6,950 420 80,595

Quick Compare

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