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OpenAI: gpt-oss-120b vs xAI: Grok 4.1 Fast

Last updated at: 2026-05-01

Metric gpt-oss-120b gpt-oss-120b medium Release: 2025-08-05 Free Available Grok 4.1 Fast Grok 4.1 Fast none Release: 2025-11-19
Score 5.8 4.5
Rank #91 #130
Reliability N/A N/A
Consistency 7.2 8.7
Tests Correct
Attempt pass rate 51.9% 24.1%
Flaky tests 6 3
Total Runs 54 54
Cost per result 0.144 0.269
Total Cost $0.011 $0.009
Input Price $0.000 / 1M $0.200 / 1M
Output Price $0.000 / 1M $0.500 / 1M
Output Tokens 13,493 1,721
Reasoning Tokens 36,879 0
Response Time (avg) 16.08s 1.76s
Response Time (max) 50.92s 5.51s
Response Time (total) 176.88s 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
gpt-oss-120b 6.7 9.9 50.0% 0 10.21s 3,518 2,177
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
gpt-oss-120b 4.3 1.1 66.7% 1 26.33s 228 2,549
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
gpt-oss-120b 10.0 10.0 100.0% 0 31.18s 694 5,072
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
gpt-oss-120b 6.4 5.9 66.7% 1 1.98s 241 1,114
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
gpt-oss-120b 2.9 4.4 22.2% 2 50.92s 6,784 20,606
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
gpt-oss-120b 4.3 10.0 0.0% 0 7.90s 107 387
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
gpt-oss-120b 9.9 10.0 100.0% 0 7.63s 126 1,799
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
gpt-oss-120b 3.2 4.7 22.2% 2 11.80s 1,508 2,092
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
gpt-oss-120b 9.8 10.0 100.0% 0 6.91s 287 1,083
Grok 4.1 Fast 2.8 1.6 33.3% 1 5.51s 208 0

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