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Google: Gemini 2.5 Flash vs xAI: Grok 4.20 Beta

Last updated at: 2026-03-12

Metric Gemini 2.5 Flash Gemini 2.5 Flash none Release: 2025-06-17 Grok 4.20 Beta Grok 4.20 Beta medium Release: 2026-03-12
Rank #42 #24
Avg Score 5.2 7.0
Consistency 9.1 9.0
Cost per result 0.191 5.989
Total Cost $0.012 $0.599
Tests Correct
Attempt pass rate 43.8% 70.8%
Flaky tests 2 2
Total Runs 48 48
Output Tokens 1,270 1,481
Reasoning Tokens 0 86,628
Response Time (avg) 923ms 8.89s
Response Time (max) 4.39s 24.21s
Response Time (total) 14.78s 142.18s

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Score vs Total Cost

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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
Gemini 2.5 Flash 10.0 10.0 0.0% 0 668ms 99 0
Grok 4.20 Beta 7.0 7.2 88.9% 1 3.19s 262 6,289
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 2.5 Flash 10.0 10.0 0.0% 0 4.39s 366 0
Grok 4.20 Beta 10.0 10.0 100.0% 0 20.93s 227 12,212
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 2.5 Flash 9.9 10.0 100.0% 0 652ms 279 0
Grok 4.20 Beta 9.9 10.0 100.0% 0 4.01s 180 5,281
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 2.5 Flash 4.0 7.2 55.6% 1 495ms 12 0
Grok 4.20 Beta 4.0 10.0 33.3% 0 21.33s 251 40,255
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 2.5 Flash 5.0 10.0 0.0% 0 615ms 78 0
Grok 4.20 Beta 10.0 10.0 100.0% 0 5.78s 72 3,440
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 2.5 Flash 9.0 6.8 66.7% 1 672ms 70 0
Grok 4.20 Beta 9.0 10.0 50.0% 0 4.97s 57 7,107
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 2.5 Flash 4.7 10.0 33.3% 0 576ms 132 0
Grok 4.20 Beta 7.0 7.2 88.9% 1 3.85s 249 6,660
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 2.5 Flash 10.0 10.0 100.0% 0 1.91s 234 0
Grok 4.20 Beta 10.0 10.0 0.0% 0 12.39s 183 5,384

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