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StepFun: Step 3.5 Flash vs xAI: Grok 4.20 Multi-Agent Beta

Last updated at: 2026-03-12

Metric Step 3.5 Flash Step 3.5 Flash medium Release: 2026-02-01 Free Available Grok 4.20 Multi-Agent Beta Grok 4.20 Multi-Agent Beta medium Release: 2026-03-12
Rank #14 #47
Avg Score 7.4 4.9
Consistency 9.1 7.1
Cost per result 0.000 97.178
Total Cost $0.000 $4.859
Tests Correct
Attempt pass rate 68.8% 52.1%
Flaky tests 2 6
Total Runs 48 48
Output Tokens 71,452 293,634
Reasoning Tokens 155,147 291,260
Response Time (avg) 29.10s 9.08s
Response Time (max) 170.45s 35.28s
Response Time (total) 290.96s 127.09s

Top Models by Score

Score vs Total Cost

Response Time (avg)

Avg Score vs Response Time (avg)

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Avg 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
Step 3.5 Flash 10.0 10.0 100.0% 0 18.54s 13,924 17,208
Grok 4.20 Multi-Agent Beta 4.0 4.4 66.7% 2 3.77s 28,392 27,808
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Step 3.5 Flash 10.0 10.0 100.0% 0 29.57s 1,176 12,984
Grok 4.20 Multi-Agent Beta 10.0 10.0 0.0% 0 0ms 0 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Step 3.5 Flash 10.0 10.0 100.0% 0 15.01s 600 13,886
Grok 4.20 Multi-Agent Beta 9.9 10.0 100.0% 0 5.54s 25,306 25,051
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Step 3.5 Flash 4.0 7.2 44.4% 1 170.45s 45,350 90,436
Grok 4.20 Multi-Agent Beta 10.0 7.2 11.1% 1 24.67s 164,609 163,647
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Step 3.5 Flash 6.0 10.0 0.0% 0 6.54s 2,214 2,584
Grok 4.20 Multi-Agent Beta 4.0 2.8 66.7% 1 6.40s 15,848 15,746
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Step 3.5 Flash 9.0 6.8 83.3% 1 4.98s 2,284 3,412
Grok 4.20 Multi-Agent Beta 9.0 10.0 50.0% 0 4.63s 25,457 25,322
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Step 3.5 Flash 4.0 10.0 33.3% 0 7.72s 5,629 10,835
Grok 4.20 Multi-Agent Beta 6.3 5.1 77.8% 2 5.01s 34,022 33,686
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Step 3.5 Flash 10.0 10.0 100.0% 0 11.91s 275 3,802
Grok 4.20 Multi-Agent Beta 10.0 10.0 0.0% 0 0ms 0 0

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