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Claude Opus 5.5 (high) vs GPT-6.1 Sol (xhigh)

GPT-6.1 Sol (xhigh) leads on average score with 9.9 vs 9.4. GPT-6.1 Sol (xhigh) has the lower benchmark cost at $1.377 vs $2.133. Claude Opus 5.5 (high) is faster at 27.55s vs 33.11s, with pass rates of 87.0% vs 97.1%.

Last updated at: 2026-10-19

Compared models

Rank
#25
Total Output Tokens
42,782
Response Time (avg)
27.55s
Total Cost
$2.133
Rank
#6
Total Output Tokens
102,482
Response Time (avg)
33.11s
Total Cost
$1.377
Recommended model GPT-6.1 Sol (xhigh)

It has the best score here (9.9), while costing about 1.5x less than Claude Opus 5.5 (high).

Detailed comparison

Metric Claude Opus 5.5 Claude Opus 5.5 high Release: 2026-09-23 GPT-6.1 Sol GPT-6.1 Sol xhigh Release: 2026-09-29
Score 9.4 9.9
Rank #25 #6
Reliability 10.0 10.0
Consistency 9.3 9.6
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 87.0% 97.1%
Flaky tests 2 1
Total Runs 69 69
Cost per result 11.222 6.256
Total Cost $2.133 $1.377
Input Price $4.000 / 1M $2.000 / 1M
Output Price $20.000 / 1M $10.000 / 1M
Cache Read Price $0.200 / 1M $0.100 / 1M
Cache Write Price $5.000 / 1M $2.500 / 1M
Total Input Tokens 319,095 175,712
Output Tokens 10,371 5,640
Reasoning Tokens 32,411 96,842
Response Time (avg) 27.55s 33.11s
Response Time (max) 95.95s 491.85s
Response Time (total) 633.73s 761.52s
Parameters ~5T total (~500B 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.

#25 Claude Opus 5.5

high
Cost
$0.136
Time
75.6s
Tokens
6,934 tok

#6 GPT-6.1 Sol

xhigh
Cost
$0.147
Time
279.4s
Tokens
14,790 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 13.44s 10,608 584 5,042
GPT-6.1 Sol 10.0 10.0 100.0% 0 10.65s 7,302 393 4,483

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