Navigate
Advertise here

Claude Opus 5 (medium) vs GPT-5.5 (low)

GPT-5.5 (low) leads on average score with 9.3 vs 9.2. GPT-5.5 (low) has the lower benchmark cost at $1.257 vs $1.586. GPT-5.5 (low) is faster at 10.15s vs 10.26s, with pass rates of 83.3% vs 86.4%.

Last updated at: 2026-09-07

Compared models

Rank
#21
Total Output Tokens
36,618
Response Time (avg)
10.26s
Total Cost
$1.586
Rank
#16
Total Output Tokens
28,540
Response Time (avg)
10.15s
Total Cost
$1.257
Recommended model GPT-5.5 (low)

It has the strongest score in this comparison (9.3) and the best overall balance of cost and response time across all 2 models.

Detailed comparison

Metric Claude Opus 5 Claude Opus 5 medium Release: 2026-07-25 GPT-5.5 GPT-5.5 low Release: 2026-04-24
Score 9.2 9.3
Rank #21 #16
Reliability 10.0 10.0
Consistency 9.6 10.0
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 83.3% 86.4%
Flaky tests 1 0
Total Runs 66 66
Cost per result 8.811 6.614
Total Cost $1.586 $1.257
Input Price $5.000 / 1M $5.000 / 1M
Output Price $25.000 / 1M $30.000 / 1M
Total Input Tokens 135,604 80,067
Output Tokens 23,814 5,378
Reasoning Tokens 12,804 23,162
Response Time (avg) 10.26s 10.15s
Response Time (max) 35.43s 56.19s
Response Time (total) 225.66s 223.24s
Parameters ~5T total (~500B active) ~1.5T total (~100B active)
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#21 Claude Opus 5

medium
Cost
$0.125
Time
69.3s
Tokens
5,134 tok

#16 GPT-5.5

low
Cost
$0.068
Time
37.0s
Tokens
2,339 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 10.0 10.0 100.0% 0 9.56s 10,590 5,224 1,162
GPT-5.5 10.0 10.0 100.0% 0 15.04s 7,302 423 6,402

Quick Compare

Switch Comparison Pair