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

The average score is effectively tied at 9.4 vs 9.4. GPT-5.6 Sol (medium) has the lower benchmark cost at $0.508 vs $1.774. GPT-6 Astra (medium) is faster at 8.08s vs 12.63s, with pass rates of 90.9% vs 90.9%.

Last updated at: 2026-09-04

Rank
#13
Total Output Tokens
34,977
Response Time (avg)
12.63s
Total Cost
$0.508
Rank
#14
Total Output Tokens
19,627
Response Time (avg)
8.08s
Total Cost
$1.774
Recommended model GPT-5.6 Sol (medium)

It has the best score here (9.4), while costing about 3.5x less than GPT-6 Astra (medium).

Detailed comparison

Metric GPT-5.6 Sol GPT-5.6 Sol medium Release: 2026-07-09 GPT-6 Astra GPT-6 Astra medium Release: 2026-09-04
Score 9.4 9.4
Rank #13 #14
Reliability 10.0 9.9
Consistency 8.9 9.2
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 90.9% 90.9%
Flaky tests 3 2
Total Runs 66 66
Cost per result 8.025 9.337
Total Cost $0.508 $1.774
Input Price $2.000 / 1M $10.000 / 1M
Output Price $10.000 / 1M $50.000 / 1M
Total Input Tokens 79,006 79,264
Output Tokens 4,696 4,789
Reasoning Tokens 30,281 14,838
Response Time (avg) 12.63s 8.08s
Response Time (max) 79.40s 73.48s
Response Time (total) 277.88s 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.

#13 GPT-5.6 Sol

medium
Cost
$0.124
Time
57.2s
Tokens
4,199 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 9.40s 7,302 394 4,706
GPT-6 Astra 10.0 10.0 100.0% 0 4.95s 7,302 394 1,673

Quick Compare

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