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Anthropic: Claude Opus 4.8 vs Anthropic: Claude Sonnet 4.6

Last updated at: 2026-05-28

Metric Claude Opus 4.8 Claude Opus 4.8 none Release: 2026-05-28 Claude Sonnet 4.6 Claude Sonnet 4.6 medium Release: 2026-02-17
Score 7.3 7.6
Rank #63 #51
Reliability 10.0 10.0
Consistency 9.2 9.2
Tests Correct
Attempt pass rate 65.0% 68.3%
Flaky tests 2 2
Total Runs 60 60
Cost per result 4.324 10.229
Total Cost $0.519 $1.330
Input Price $5.000 / 1M $3.000 / 1M
Output Price $25.000 / 1M $15.000 / 1M
Output Tokens 8,098 49,891
Reasoning Tokens 0 29,565
Response Time (avg) 3.51s 15.81s
Response Time (max) 17.73s 46.35s
Response Time (total) 70.19s 189.71s

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
Claude Sonnet 4.6 6.5 10.0 50.0% 0 2.98s 1,046 1,093
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
Claude Sonnet 4.6 6.9 6.0 66.7% 1 33.87s 11,277 3,281
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
Claude Sonnet 4.6 10.0 10.0 100.0% 0 46.35s 5,871 3,962
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
Claude Sonnet 4.6 10.0 10.0 100.0% 0 13.90s 649 742
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
Claude Sonnet 4.6 2.9 7.2 11.1% 1 0ms 25,790 16,919
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
Claude Sonnet 4.6 10.0 10.0 100.0% 0 4.94s 256 433
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
Claude Sonnet 4.6 10.0 10.0 100.0% 0 2.61s 318 552
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
Claude Sonnet 4.6 10.0 10.0 100.0% 0 5.31s 592 646
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
Claude Sonnet 4.6 10.0 10.0 100.0% 0 7.48s 655 351
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
Claude Sonnet 4.6 3.0 10.0 0.0% 0 30.09s 3,437 1,586

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