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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 high Release: 2026-05-29
Score 7.3 7.1
Rank #65 #74
Reliability 10.0 10.0
Consistency 9.2 8.2
Tests Correct
Attempt pass rate 65.0% 65.8%
Flaky tests 2 4
Total Runs 60 60
Cost per result 4.324 8.723
Total Cost $0.519 $0.960
Input Price $5.000 / 1M $0.200 / 1M
Output Price $25.000 / 1M $1.150 / 1M
Output Tokens 8,098 828,084
Reasoning Tokens 0 0
Response Time (avg) 3.51s 49.43s
Response Time (max) 17.73s 192.75s
Response Time (total) 70.19s 988.58s

Top Models by Score

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 4.8 6.5 10.0 50.0% 0 3.40s 1,472 0
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 4.8 6.8 10.0 50.0% 0 3.59s 1,323 0
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 4.8 9.5 10.0 100.0% 0 17.73s 3,259 0
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 4.8 7.3 5.8 83.3% 1 1.77s 308 0
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 4.8 5.3 7.2 44.4% 1 1.66s 61 0
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 4.8 10.0 10.0 100.0% 0 3.48s 230 0
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 4.8 9.9 10.0 100.0% 0 1.37s 95 0
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 4.8 7.7 10.0 66.7% 0 2.74s 783 0
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 4.8 10.0 10.0 100.0% 0 5.35s 355 0
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 4.8 3.0 10.0 0.0% 0 3.41s 212 0
Step 3.7 Flash 3.0 10.0 0.0% 0 149.34s 147,476 0

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