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Anthropic: Claude Sonnet 4.6 vs StepFun: Step 3.7 Flash

Last updated at: 2026-05-29

Metric Claude Sonnet 4.6 Claude Sonnet 4.6 medium Release: 2026-02-17 Step 3.7 Flash Step 3.7 Flash low Release: 2026-05-29
Score 7.6 7.4
Rank #53 #60
Reliability 10.0 10.0
Consistency 9.2 8.7
Tests Correct
Attempt pass rate 68.3% 68.3%
Flaky tests 2 3
Total Runs 60 60
Cost per result 10.229 2.796
Total Cost $1.330 $0.336
Input Price $3.000 / 1M $0.200 / 1M
Output Price $15.000 / 1M $1.150 / 1M
Output Tokens 49,891 285,209
Reasoning Tokens 29,565 0
Response Time (avg) 15.81s 16.06s
Response Time (max) 46.35s 124.75s
Response Time (total) 189.71s 321.11s

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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 Sonnet 4.6 6.5 10.0 50.0% 0 2.98s 1,046 1,093
Step 3.7 Flash 8.7 7.9 91.7% 1 4.02s 10,896 0
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 6.9 6.0 66.7% 1 33.87s 11,277 3,281
Step 3.7 Flash 10.0 10.0 100.0% 0 9.43s 14,569 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 10.0 10.0 100.0% 0 46.35s 5,871 3,962
Step 3.7 Flash 10.0 10.0 100.0% 0 7.98s 6,426 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 10.0 10.0 100.0% 0 13.90s 649 742
Step 3.7 Flash 7.3 5.8 83.3% 1 2.29s 2,667 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 2.9 7.2 11.1% 1 0ms 25,790 16,919
Step 3.7 Flash 5.3 7.2 44.4% 1 43.31s 104,487 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 10.0 10.0 100.0% 0 4.94s 256 433
Step 3.7 Flash 3.4 9.3 0.0% 0 7.00s 4,604 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 10.0 10.0 100.0% 0 2.61s 318 552
Step 3.7 Flash 9.8 10.0 100.0% 0 1.58s 1,857 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 10.0 10.0 100.0% 0 5.31s 592 646
Step 3.7 Flash 5.5 9.9 33.3% 0 1.84s 3,564 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 10.0 10.0 100.0% 0 7.48s 655 351
Step 3.7 Flash 10.0 10.0 100.0% 0 3.25s 1,360 0
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 3.0 10.0 0.0% 0 30.09s 3,437 1,586
Step 3.7 Flash 3.0 10.0 0.0% 0 124.75s 134,779 0

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