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GPT 5.3 Chat (default) vs GPT-5.6 Sol

The average score is effectively tied at 6.7 vs 6.7. GPT 5.3 Chat (default) has the lower benchmark cost at $0.533 vs $0.795. GPT-5.6 Sol is faster at 4.61s vs 6.31s, with pass rates of 62.3% vs 60.9%.

Last updated at: 2026-10-07

Compared models

Rank
#193
Total Output Tokens
28,179
Response Time (avg)
6.31s
Total Cost
$0.533
Rank
#194
Total Output Tokens
5,555
Response Time (avg)
4.61s
Total Cost
$0.795
Recommended model GPT 5.3 Chat (default)

It has the strongest score in this comparison (6.7) and the best overall balance of cost and response time across 2 models.

Detailed comparison

Metric GPT 5.3 Chat GPT 5.3 Chat default Release: 2026-03-03 GPT-5.6 Sol GPT-5.6 Sol none Release: 2026-07-09
Score 6.7 6.7
Rank #193 #194
Reliability 10.0 10.0
Consistency 8.6 9.1
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 62.3% 60.9%
Flaky tests 4 3
Total Runs 69 69
Cost per result 4.097 6.619
Total Cost $0.533 $0.795
Input Price $1.750 / 1M $2.000 / 1M
Output Price $14.000 / 1M $10.000 / 1M
Cache Read Price N/A $0.200 / 1M
Cache Write Price N/A $2.500 / 1M
Total Input Tokens 78,846 207,852
Output Tokens 7,635 5,555
Reasoning Tokens 20,544 0
Response Time (avg) 6.31s 4.61s
Response Time (max) 18.33s 58.28s
Response Time (total) 138.73s 105.93s
Parameters ~400B total (~17B active) ~2T total (~150B 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.

#193 GPT 5.3 Chat

default
Cost
$0.008
Time
8.1s
Tokens
634 tok

#194 GPT-5.6 Sol

none
Cost
$0.116
Time
78.7s
Tokens
3,944 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
GPT-5.6 Sol 5.5 10.0 33.3% 0 1.39s 7,302 390 0

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