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

Last updated at: 2026-04-11

Metric gpt-oss-120b gpt-oss-120b none Release: 2025-08-05 Free Available Grok 4.1 Fast Grok 4.1 Fast medium Release: 2025-11-19
Score 5.2 6.7
Rank #79 #49
Consistency 7.9 7.2
Tests Correct
Attempt pass rate 38.9% 64.8%
Flaky tests 5 6
Total Runs 54 54
Cost per result 0.221 0.613
Total Cost $0.009 $0.056
Input Price $0.039 / 1M $0.200 / 1M
Output Price $0.190 / 1M $0.500 / 1M
Output Tokens 44,652 2,010
Reasoning Tokens 0 91,298
Response Time (avg) 11.96s 23.88s
Response Time (max) 68.97s 121.79s
Response Time (total) 179.34s 262.66s

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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
gpt-oss-120b 6.6 8.0 58.3% 1 6.03s 4,867 0
Grok 4.1 Fast 8.7 7.9 91.7% 1 3.81s 108 4,741
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 9.57s 3,232 0
Grok 4.1 Fast 2.3 1.1 33.3% 1 23.58s 821 6,703
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
gpt-oss-120b 3.0 10.0 0.0% 0 0ms 0 0
Grok 4.1 Fast 10.0 10.0 100.0% 0 37.64s 261 12,272
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
gpt-oss-120b 6.5 10.0 50.0% 0 7.12s 598 0
Grok 4.1 Fast 10.0 10.0 100.0% 0 6.63s 180 5,409
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
gpt-oss-120b 3.0 10.0 0.0% 0 34.98s 29,483 0
Grok 4.1 Fast 5.8 4.4 66.7% 2 121.79s 11 37,657
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
gpt-oss-120b 4.6 10.0 0.0% 0 2.83s 586 0
Grok 4.1 Fast 4.2 9.9 0.0% 0 16.25s 127 3,456
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
gpt-oss-120b 8.4 6.9 83.3% 1 5.10s 1,982 0
Grok 4.1 Fast 6.6 10.0 50.0% 0 5.30s 55 3,489
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
gpt-oss-120b 4.5 4.8 44.5% 2 6.86s 3,904 0
Grok 4.1 Fast 5.3 7.2 44.4% 1 8.08s 187 6,086
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
gpt-oss-120b 3.0 10.0 0.0% 0 0ms 0 0
Grok 4.1 Fast 2.8 1.6 33.3% 1 27.71s 260 11,485

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