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Claude Sonnet 5.5 (high) vs GPT-5.2 (medium)

GPT-5.2 (medium) leads on average score with 8.4 vs 8.3. Claude Sonnet 5.5 (high) has the lower benchmark cost at $0.752 vs $1.182. Claude Sonnet 5.5 (high) is faster at 8.94s vs 28.51s, with pass rates of 80.3% vs 72.7%.

Last updated at: 2026-09-29

Compared models

Rank
#80
Total Output Tokens
43,305
Response Time (avg)
8.94s
Total Cost
$0.752
Rank
#70
Total Output Tokens
71,252
Response Time (avg)
28.51s
Total Cost
$1.182
Recommended model Claude Sonnet 5.5 (high)

Its score stays close to the best score here (8.3 vs 8.4), while costing about 1.6x less than GPT-5.2 (medium).

Detailed comparison

Metric Claude Sonnet 5.5 Claude Sonnet 5.5 high Release: 2026-09-29 GPT-5.2 GPT-5.2 medium Release: 2025-12-11
Score 8.3 8.4
Rank #80 #70
Reliability 10.0 10.0
Consistency 8.3 8.5
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 80.3% 72.7%
Flaky tests 5 4
Total Runs 66 66
Cost per result 5.014 8.438
Total Cost $0.752 $1.182
Input Price $2.000 / 1M $1.750 / 1M
Output Price $10.000 / 1M $14.000 / 1M
Total Input Tokens 159,456 105,013
Output Tokens 10,170 9,914
Reasoning Tokens 33,135 61,338
Response Time (avg) 8.94s 28.51s
Response Time (max) 25.71s 116.86s
Response Time (total) 196.68s 456.13s
Parameters ~1T total (~100B active) ~1.2T total (~80B active)
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

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

#80 Claude Sonnet 5.5

high
Cost
$0.088
Time
73.5s
Tokens
8,914 tok

#70 GPT-5.2

medium
Cost
$0.047
Time
49.2s
Tokens
3,396 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 Sonnet 5.5 10.0 10.0 100.0% 0 9.85s 10,608 561 6,326
GPT-5.2 10.0 10.0 100.0% 0 22.73s 7,302 511 11,912

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