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Google: Gemma 4 31B vs xAI: Grok 4.20

Last updated at: 2026-05-10

Metric Gemma 4 31B Gemma 4 31B none Release: 2026-04-02 Free Available Grok 4.20 Grok 4.20 medium Release: 2026-03-31
Score 6.9 6.9
Rank #66 #68
Reliability 10.0 10.0
Consistency 10.0 8.3
Tests Correct
Attempt pass rate 52.6% 63.2%
Flaky tests 0 4
Total Runs 57 57
Cost per result 0.025 7.559
Total Cost $0.003 $0.756
Input Price $0.130 / 1M $1.250 / 1M
Output Price $0.380 / 1M $2.500 / 1M
Output Tokens 1,371 1,784
Reasoning Tokens 0 128,233
Response Time (avg) 3.86s 14.53s
Response Time (max) 26.13s 63.48s
Response Time (total) 65.57s 276.06s

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Score vs Total Cost

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Score vs Response Time (avg)

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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
Gemma 4 31B 6.5 10.0 50.0% 0 1.85s 45 0
Grok 4.20 8.2 7.9 83.3% 1 3.95s 287 8,312
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemma 4 31B 10.0 10.0 100.0% 0 26.13s 699 0
Grok 4.20 4.3 1.1 66.7% 1 24.33s 250 12,804
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemma 4 31B 3.0 10.0 0.0% 0 0ms 0 0
Grok 4.20 10.0 10.0 100.0% 0 17.40s 232 9,556
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemma 4 31B 10.0 10.0 100.0% 0 2.25s 285 0
Grok 4.20 10.0 10.0 100.0% 0 4.17s 180 5,333
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemma 4 31B 7.7 10.0 66.7% 0 3.22s 27 0
Grok 4.20 5.3 10.0 33.3% 0 27.03s 375 49,339
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemma 4 31B 10.0 10.0 100.0% 0 2.09s 117 0
Grok 4.20 3.9 2.6 33.3% 1 24.48s 65 6,440
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemma 4 31B 6.5 10.0 50.0% 0 2.84s 78 0
Grok 4.20 7.3 6.0 83.3% 1 4.42s 40 5,474
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemma 4 31B 6.5 10.0 33.3% 0 2.95s 108 0
Grok 4.20 7.7 10.0 66.7% 0 6.20s 149 7,913
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemma 4 31B 3.0 10.0 0.0% 0 0ms 0 0
Grok 4.20 3.0 10.0 0.0% 0 13.68s 197 6,620
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemma 4 31B 3.0 10.0 0.0% 0 1.25s 12 0
Grok 4.20 3.0 10.0 0.0% 0 63.48s 9 16,442

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