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Anthropic: Claude Opus 4.6 vs DeepSeek: DeepSeek V4 Flash

Last updated at: 2026-04-24

Metric Claude Opus 4.6 Claude Opus 4.6 medium Release: 2026-02-05 DeepSeek V4 Flash DeepSeek V4 Flash high Release: 2026-04-24
Score 7.6 7.8
Rank #43 #35
Consistency 9.1 7.8
Tests Correct
Attempt pass rate 70.4% 79.6%
Flaky tests 2 5
Total Runs 54 52
Cost per result 12.047 0.189
Total Cost $1.446 $0.021
Input Price $5.000 / 1M $0.140 / 1M
Output Price $25.000 / 1M $0.280 / 1M
Output Tokens 29,829 1,757
Reasoning Tokens 18,938 55,907
Response Time (avg) 21.08s 47.47s
Response Time (max) 83.40s 255.28s
Response Time (total) 231.84s 854.45s

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Score vs Total Cost

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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 4.6 6.4 5.8 66.7% 2 7.45s 986 1,071
DeepSeek V4 Flash 8.3 10.0 75.0% 0 28.51s 140 7,770
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.6 10.0 10.0 100.0% 0 23.11s 3,486 1,504
DeepSeek V4 Flash 10.0 10.0 100.0% 0 62.48s 369 9,361
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.6 10.0 10.0 100.0% 0 76.66s 8,178 5,194
DeepSeek V4 Flash 10.0 10.0 100.0% 0 76.57s 465 7,347
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.6 10.0 10.0 100.0% 0 7.37s 691 757
DeepSeek V4 Flash 10.0 10.0 100.0% 0 28.03s 201 1,179
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.6 3.0 10.0 0.0% 0 83.40s 14,642 8,687
DeepSeek V4 Flash 4.1 4.4 44.5% 2 112.69s 19 24,857
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.6 10.0 10.0 100.0% 0 5.04s 188 292
DeepSeek V4 Flash 6.1 3.1 66.7% 1 25.15s 79 632
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.6 10.0 10.0 100.0% 0 2.43s 266 467
DeepSeek V4 Flash 10.0 10.0 100.0% 0 15.36s 63 1,622
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.6 7.7 10.0 66.7% 0 4.60s 531 637
DeepSeek V4 Flash 6.4 4.5 77.8% 2 25.53s 193 2,597
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.6 10.0 10.0 100.0% 0 9.73s 861 329
DeepSeek V4 Flash 10.0 10.0 100.0% 0 74.73s 228 542

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