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Google: Gemini 3.1 Pro Preview vs xAI: Grok 4.20 Beta

Last updated at: 2026-03-12

Metric Gemini 3.1 Pro Preview Gemini 3.1 Pro Preview medium Release: 2026-02-19 Grok 4.20 Beta Grok 4.20 Beta none Release: 2026-03-12
Rank #2 #52
Avg Score 9.4 4.4
Consistency 10.0 9.1
Cost per result 3.417 2.214
Total Cost $0.513 $0.089
Tests Correct
Attempt pass rate 93.8% 33.3%
Flaky tests 0 2
Total Runs 48 48
Output Tokens 1,521 1,511
Reasoning Tokens 35,656 0
Response Time (avg) 16.60s 1.22s
Response Time (max) 40.61s 6.48s
Response Time (total) 149.36s 19.53s

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Score vs Total Cost

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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 3.1 Pro Preview 10.0 10.0 100.0% 0 9.52s 106 2,533
Grok 4.20 Beta 3.3 7.9 22.2% 1 562ms 245 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Pro Preview 9.0 10.0 100.0% 0 40.61s 432 9,281
Grok 4.20 Beta 10.0 10.0 0.0% 0 6.48s 282 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Pro Preview 9.9 10.0 100.0% 0 7.72s 279 3,904
Grok 4.20 Beta 9.9 10.0 100.0% 0 601ms 197 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Pro Preview 7.0 10.0 66.7% 0 32.73s 18 12,424
Grok 4.20 Beta 10.0 10.0 0.0% 0 611ms 160 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Pro Preview 10.0 10.0 100.0% 0 11.77s 108 1,179
Grok 4.20 Beta 5.0 10.0 0.0% 0 541ms 87 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Pro Preview 10.0 10.0 100.0% 0 9.56s 72 2,236
Grok 4.20 Beta 4.5 10.0 0.0% 0 687ms 60 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Pro Preview 10.0 10.0 100.0% 0 7.15s 232 3,117
Grok 4.20 Beta 4.0 7.2 55.6% 1 541ms 291 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Pro Preview 10.0 10.0 100.0% 0 23.15s 274 982
Grok 4.20 Beta 10.0 10.0 100.0% 0 4.79s 189 0

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