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GPT-5.6 Sol (low) vs GPT-6.1 Sol (high)

The average score is effectively tied at 9.5 vs 9.6. GPT-5.6 Sol (low) has the lower benchmark cost at $0.357 vs $0.542. GPT-5.6 Sol (low) is faster at 9.04s vs 13.68s, with pass rates of 86.4% vs 93.9%.

Last updated at: 2026-09-29

Compared models

Rank
#13
Total Output Tokens
19,946
Response Time (avg)
9.04s
Total Cost
$0.357
Rank
#12
Total Output Tokens
38,258
Response Time (avg)
13.68s
Total Cost
$0.542
Recommended model GPT-5.6 Sol (low)

It has the best score here (9.5), while costing about 1.5x less than GPT-6.1 Sol (high).

Detailed comparison

Metric GPT-5.6 Sol GPT-5.6 Sol low Release: 2026-07-09 GPT-6.1 Sol GPT-6.1 Sol high Release: 2026-09-29
Score 9.5 9.6
Rank #13 #12
Reliability 10.0 10.0
Consistency 9.2 9.6
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 86.4% 93.9%
Flaky tests 2 1
Total Runs 66 66
Cost per result 5.508 2.708
Total Cost $0.357 $0.542
Input Price $2.000 / 1M $2.000 / 1M
Output Price $10.000 / 1M $10.000 / 1M
Total Input Tokens 78,580 79,492
Output Tokens 4,476 4,954
Reasoning Tokens 15,470 33,304
Response Time (avg) 9.04s 13.68s
Response Time (max) 53.91s 139.76s
Response Time (total) 198.97s 301.03s
Parameters ~2T total (~150B active) ~2T total (~150B active)
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

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

#13 GPT-5.6 Sol

low
Cost
$0.062
Time
26.7s
Tokens
2,150 tok

#12 GPT-6.1 Sol

high
Cost
$0.079
Time
149.5s
Tokens
7,920 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-5.6 Sol 10.0 10.0 100.0% 0 11.25s 7,302 412 3,482
GPT-6.1 Sol 10.0 10.0 100.0% 0 5.18s 7,302 390 2,215

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