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GPT-5.6 Sol (medium) vs GPT-6 Sol (medium)

The average score is effectively tied at 9.5 vs 9.5. GPT-6 Sol (medium) has the lower benchmark cost at $0.703 vs $1.700. GPT-6 Sol (medium) is faster at 12.12s vs 14.57s, with pass rates of 91.3% vs 94.2%.

Last updated at: 2026-10-26

Compared models

Rank
#21
Total Output Tokens
38,005
Response Time (avg)
14.57s
Total Cost
$1.700
Rank
#20
Total Output Tokens
31,387
Response Time (avg)
12.12s
Total Cost
$0.703
Recommended model GPT-6 Sol (medium)

It has the best score here (9.5), while costing about 2.4x less than GPT-5.6 Sol (medium).

Detailed comparison

Metric GPT-5.6 Sol GPT-5.6 Sol medium Release: 2026-07-09 GPT-6 Sol GPT-6 Sol medium Release: 2026-09-23
Score 9.5 9.5
Rank #21 #20
Reliability 10.0 10.0
Consistency 8.9 9.6
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 91.3% 94.2%
Flaky tests 3 1
Total Runs 69 69
Cost per result 8.944 3.348
Total Cost $1.700 $0.703
Input Price $2.000 / 1M $2.000 / 1M
Output Price $10.000 / 1M $10.000 / 1M
Cache Read Price $0.200 / 1M $0.200 / 1M
Cache Write Price $2.500 / 1M $2.500 / 1M
Total Input Tokens 191,341 194,520
Output Tokens 5,665 5,396
Reasoning Tokens 32,340 25,991
Response Time (avg) 14.57s 12.12s
Response Time (max) 79.40s 82.74s
Response Time (total) 335.16s 278.70s
Parameters ~2T total (~150B 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.

#21 GPT-5.6 Sol

medium
Cost
$0.124
Time
57.2s
Tokens
4,199 tok

#20 GPT-6 Sol

medium
Cost
$0.035
Time
36.9s
Tokens
3,493 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 9.40s 7,302 394 4,706
GPT-6 Sol 8.2 7.2 88.9% 1 11.78s 7,302 392 2,532

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