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Google: Gemini 3 Flash Preview vs xAI: Grok 4.20 Beta

Last updated at: 2026-03-12

Metric Gemini 3 Flash Preview Gemini 3 Flash Preview medium Release: 2025-12-17 Grok 4.20 Beta Grok 4.20 Beta medium Release: 2026-03-12
Rank #1 #24
Avg Score 10.0 7.0
Consistency 10.0 9.0
Cost per result 1.025 5.989
Total Cost $0.164 $0.599
Tests Correct
Attempt pass rate 100.0% 70.8%
Flaky tests 0 2
Total Runs 48 48
Output Tokens 1,634 1,481
Reasoning Tokens 47,907 86,628
Response Time (avg) 12.36s 8.89s
Response Time (max) 50.16s 24.21s
Response Time (total) 111.21s 142.18s

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Score vs Total Cost

Response Time (avg)

Avg Score vs Response Time (avg)

Total Output Tokens

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 3 Flash Preview 10.0 10.0 100.0% 0 5.61s 299 3,127
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 3 Flash Preview 10.0 10.0 100.0% 0 50.16s 351 12,645
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 3 Flash Preview 9.9 10.0 100.0% 0 4.72s 279 5,333
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 3 Flash Preview 10.0 10.0 100.0% 0 21.12s 12 14,908
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 3 Flash Preview 10.0 10.0 100.0% 0 4.09s 111 1,285
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 3 Flash Preview 10.0 10.0 100.0% 0 6.10s 72 4,558
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 3 Flash Preview 10.0 10.0 100.0% 0 4.43s 276 4,921
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 3 Flash Preview 10.0 10.0 100.0% 0 10.55s 234 1,130
Grok 4.20 Beta 10.0 10.0 0.0% 0 12.39s 183 5,384

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