Navigate
AI BENCHY
Advertise here

AI BENCHY Compare

Anthropic: Claude Opus 4.8 vs OpenAI: GPT-5.3 Chat

Last updated at: 2026-05-28

Metric Claude Opus 4.8 Claude Opus 4.8 none Release: 2026-05-28 GPT-5.3 Chat GPT-5.3 Chat none Release: 2026-03-03
Score 7.3 7.4
Rank #63 #56
Reliability 10.0 10.0
Consistency 9.2 8.4
Tests Correct
Attempt pass rate 65.0% 68.3%
Flaky tests 2 4
Total Runs 60 60
Cost per result 4.324 3.350
Total Cost $0.519 $0.402
Input Price $5.000 / 1M $1.750 / 1M
Output Price $25.000 / 1M $14.000 / 1M
Output Tokens 8,098 24,757
Reasoning Tokens 0 0
Response Time (avg) 3.51s 6.13s
Response Time (max) 17.73s 18.33s
Response Time (total) 70.19s 122.61s

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

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.8 6.5 10.0 50.0% 0 3.40s 1,472 0
GPT-5.3 Chat 6.7 8.1 58.3% 1 3.86s 3,167 0
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.8 6.8 10.0 50.0% 0 3.59s 1,323 0
GPT-5.3 Chat 6.9 6.2 66.7% 1 10.52s 4,772 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.8 9.5 10.0 100.0% 0 17.73s 3,259 0
GPT-5.3 Chat 10.0 10.0 100.0% 0 11.96s 2,614 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.8 7.3 5.8 83.3% 1 1.77s 308 0
GPT-5.3 Chat 10.0 10.0 100.0% 0 2.21s 942 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.8 5.3 7.2 44.4% 1 1.66s 61 0
GPT-5.3 Chat 3.5 4.4 33.3% 2 13.01s 8,264 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.8 10.0 10.0 100.0% 0 3.48s 230 0
GPT-5.3 Chat 4.6 10.0 0.0% 0 1.99s 319 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.8 9.9 10.0 100.0% 0 1.37s 95 0
GPT-5.3 Chat 9.8 10.0 100.0% 0 3.51s 1,491 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.8 7.7 10.0 66.7% 0 2.74s 783 0
GPT-5.3 Chat 10.0 10.0 100.0% 0 2.99s 1,758 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.8 10.0 10.0 100.0% 0 5.35s 355 0
GPT-5.3 Chat 10.0 10.0 100.0% 0 8.36s 861 0
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.8 3.0 10.0 0.0% 0 3.41s 212 0
GPT-5.3 Chat 3.0 10.0 0.0% 0 4.38s 569 0

Quick Compare

Switch Comparison Pair