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Anthropic: Claude Opus 4.8 vs StepFun: Step 3.7 Flash

Last updated at: 2026-05-29

Metric Claude Opus 4.8 Claude Opus 4.8 none Release: 2026-05-28 Step 3.7 Flash Step 3.7 Flash medium Release: 2026-05-29
Score 7.3 7.9
Rank #65 #32
Reliability 10.0 9.9
Consistency 9.2 9.2
Tests Correct
Attempt pass rate 65.0% 71.7%
Flaky tests 2 2
Total Runs 60 58
Cost per result 4.324 2.663
Total Cost $0.519 $0.347
Input Price $5.000 / 1M $0.200 / 1M
Output Price $25.000 / 1M $1.150 / 1M
Output Tokens 8,098 294,481
Reasoning Tokens 0 0
Response Time (avg) 3.51s 18.32s
Response Time (max) 17.73s 113.98s
Response Time (total) 70.19s 366.45s

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Score vs Total Cost

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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
Step 3.7 Flash 8.7 7.9 91.7% 1 9.65s 32,185 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
Step 3.7 Flash 8.2 6.7 83.3% 1 10.64s 19,320 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
Step 3.7 Flash 10.0 10.0 100.0% 0 9.06s 7,106 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
Step 3.7 Flash 10.0 10.0 100.0% 0 2.75s 3,020 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
Step 3.7 Flash 7.7 10.0 66.7% 0 48.27s 70,347 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
Step 3.7 Flash 4.0 10.0 0.0% 0 6.85s 3,987 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
Step 3.7 Flash 9.8 10.0 100.0% 0 1.83s 2,166 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
Step 3.7 Flash 5.7 9.9 33.3% 0 6.19s 15,071 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
Step 3.7 Flash 10.0 10.0 100.0% 0 4.16s 2,115 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
Step 3.7 Flash 3.0 10.0 0.0% 0 113.98s 139,164 0

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