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IBM: Granite 4.1 8B vs xAI: Grok 4.1 Fast

Last updated at: 2026-05-01

Metric Granite 4.1 8B Granite 4.1 8B none Release: 2026-05-01 Grok 4.1 Fast Grok 4.1 Fast none Release: 2025-11-19
Score 4.3 4.5
Rank #135 #130
Reliability 10.0 N/A
Consistency 10.0 8.7
Tests Correct
Attempt pass rate 11.1% 24.1%
Flaky tests 0 3
Total Runs 54 54
Cost per result 0.110 0.269
Total Cost $0.003 $0.009
Input Price $0.050 / 1M $0.200 / 1M
Output Price $0.100 / 1M $0.500 / 1M
Output Tokens 2,712 1,721
Reasoning Tokens 0 0
Response Time (avg) 767ms 1.76s
Response Time (max) 2.17s 5.51s
Response Time (total) 13.81s 19.35s

Top Models by Score

Score vs Total Cost

Response Time (avg)

Score vs Response Time (avg)

Total Output Tokens

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
Granite 4.1 8B 4.9 10.0 25.0% 0 844ms 903 0
Grok 4.1 Fast 3.2 10.0 0.0% 0 1.07s 235 0
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Granite 4.1 8B 6.9 10.0 0.0% 0 1.07s 339 0
Grok 4.1 Fast 5.3 3.4 33.3% 1 1.79s 567 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Granite 4.1 8B 3.0 10.0 0.0% 0 1.88s 396 0
Grok 4.1 Fast 3.0 10.0 0.0% 0 3.33s 105 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Granite 4.1 8B 3.0 10.0 0.0% 0 575ms 195 0
Grok 4.1 Fast 10.0 10.0 100.0% 0 943ms 180 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Granite 4.1 8B 3.0 10.0 0.0% 0 357ms 24 0
Grok 4.1 Fast 5.9 7.2 55.6% 1 1.06s 15 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Granite 4.1 8B 4.0 10.0 0.0% 0 499ms 115 0
Grok 4.1 Fast 4.4 9.9 0.0% 0 1.08s 112 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Granite 4.1 8B 3.6 9.9 0.0% 0 344ms 66 0
Grok 4.1 Fast 3.0 10.0 0.0% 0 923ms 56 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Granite 4.1 8B 3.7 10.0 0.0% 0 635ms 431 0
Grok 4.1 Fast 3.2 10.0 0.0% 0 1.28s 243 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Granite 4.1 8B 10.0 10.0 100.0% 0 2.17s 243 0
Grok 4.1 Fast 2.8 1.6 33.3% 1 5.51s 208 0

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