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Claude Opus 5.5 (low) vs GPT-5.6 Sol (medium)

GPT-5.6 Sol (medium) leads on average score with 9.4 vs 9.3. GPT-5.6 Sol (medium) has the lower benchmark cost at $0.508 vs $0.952. GPT-5.6 Sol (medium) is faster at 12.63s vs 23.72s, with pass rates of 87.9% vs 90.9%.

Last updated at: 2026-09-23

Compared models

Rank
#20
Total Output Tokens
21,004
Response Time (avg)
23.72s
Total Cost
$0.952
Rank
#15
Total Output Tokens
34,977
Response Time (avg)
12.63s
Total Cost
$0.508
Recommended model GPT-5.6 Sol (medium)

It has the best score here (9.4), while costing about 1.9x less than Claude Opus 5.5 (low).

Detailed comparison

Metric Claude Opus 5.5 Claude Opus 5.5 low Release: 2026-09-23 GPT-5.6 Sol GPT-5.6 Sol medium Release: 2026-07-09
Score 9.3 9.4
Rank #20 #15
Reliability 10.0 10.0
Consistency 9.3 8.9
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 87.9% 90.9%
Flaky tests 2 3
Total Runs 66 66
Cost per result 5.284 8.025
Total Cost $0.952 $0.508
Input Price $4.000 / 1M $2.000 / 1M
Output Price $20.000 / 1M $10.000 / 1M
Total Input Tokens 132,746 79,006
Output Tokens 6,454 4,696
Reasoning Tokens 14,550 30,281
Response Time (avg) 23.72s 12.63s
Response Time (max) 89.16s 79.40s
Response Time (total) 521.82s 277.88s
Parameters ~5T total (~500B 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.

#20 Claude Opus 5.5

low
Invalid SVG
Cost
$0.038
Time
19.1s
Tokens
2,010 tok

#15 GPT-5.6 Sol

medium
Cost
$0.124
Time
57.2s
Tokens
4,199 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
Claude Opus 5.5 10.0 10.0 100.0% 0 12.23s 10,608 575 2,777
GPT-5.6 Sol 10.0 10.0 100.0% 0 9.40s 7,302 394 4,706

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