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

The average score is effectively tied at 9.4 vs 9.4. GPT-5.6 Sol (high) has the lower benchmark cost at $0.446 vs $1.774. GPT-6 Astra (medium) is faster at 8.08s vs 11.48s, with pass rates of 89.4% vs 90.9%.

Last updated at: 2026-09-04

Rank
#15
Total Output Tokens
28,708
Response Time (avg)
11.48s
Total Cost
$0.446
Rank
#14
Total Output Tokens
19,627
Response Time (avg)
8.08s
Total Cost
$1.774
Recommended model GPT-5.6 Sol (high)

It has the best score here (9.4), while costing about 4.0x less than GPT-6 Astra (medium).

Detailed comparison

Metric GPT-5.6 Sol GPT-5.6 Sol high Release: 2026-07-09 GPT-6 Astra GPT-6 Astra medium Release: 2026-09-04
Score 9.4 9.4
Rank #15 #14
Reliability 10.0 9.9
Consistency 8.9 9.2
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 89.4% 90.9%
Flaky tests 3 2
Total Runs 66 66
Cost per result 6.987 9.337
Total Cost $0.446 $1.774
Input Price $2.000 / 1M $10.000 / 1M
Output Price $10.000 / 1M $50.000 / 1M
Total Input Tokens 79,258 79,264
Output Tokens 4,855 4,789
Reasoning Tokens 23,853 14,838
Response Time (avg) 11.48s 8.08s
Response Time (max) 54.79s 73.48s
Response Time (total) 252.62s 177.70s
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.

#15 GPT-5.6 Sol

high
Cost
$0.151
Time
201.9s
Tokens
5,100 tok

#14 GPT-6 Astra

medium
Cost
$0.231
Time
81.0s
Tokens
4,708 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 12.52s 7,302 404 5,656
GPT-6 Astra 10.0 10.0 100.0% 0 4.95s 7,302 394 1,673

Quick Compare

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