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Anthropic: Claude Opus 4.6 vs StepFun: Step 3.7 Flash

Last updated at: 2026-05-29

Metric Claude Opus 4.6 Claude Opus 4.6 medium Release: 2026-02-05 Step 3.7 Flash Step 3.7 Flash high Release: 2026-05-29
Score 7.2 7.1
Rank #71 #74
Reliability 10.0 10.0
Consistency 9.1 8.2
Tests Correct
Attempt pass rate 63.3% 65.8%
Flaky tests 2 4
Total Runs 60 60
Cost per result 15.796 8.723
Total Cost $1.896 $0.960
Input Price $5.000 / 1M $0.200 / 1M
Output Price $25.000 / 1M $1.150 / 1M
Output Tokens 42,254 828,084
Reasoning Tokens 23,554 0
Response Time (avg) 25.45s 49.43s
Response Time (max) 83.40s 192.75s
Response Time (total) 330.91s 988.58s

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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 4.6 6.4 5.8 66.7% 2 7.45s 986 1,071
Step 3.7 Flash 10.0 10.0 100.0% 0 13.40s 42,656 0
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.6 7.2 9.8 50.0% 0 29.37s 7,865 3,675
Step 3.7 Flash 3.6 4.6 25.0% 1 126.82s 164,069 0
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
Step 3.7 Flash 10.0 10.0 100.0% 0 13.01s 8,802 0
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
Step 3.7 Flash 10.0 10.0 100.0% 0 14.72s 23,113 0
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
Step 3.7 Flash 4.1 4.4 44.5% 2 149.64s 410,502 0
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
Step 3.7 Flash 5.5 10.0 0.0% 0 4.17s 2,862 0
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
Step 3.7 Flash 9.8 10.0 100.0% 0 1.52s 2,010 0
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 4.71s 532 630
Step 3.7 Flash 5.3 7.2 44.4% 1 10.22s 25,422 0
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
Step 3.7 Flash 10.0 10.0 100.0% 0 2.79s 1,172 0
Trivia 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 63.24s 8,045 2,452
Step 3.7 Flash 3.0 10.0 0.0% 0 149.34s 147,476 0

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