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Anthropic: Claude Opus 4.6 vs OpenAI: gpt-oss-120b

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Last updated at : 2026-02-27 15:16

Summary

Metric Anthropic: Claude Opus 4.6 medium Release: Unknown release date OpenAI: gpt-oss-120b medium Release: Unknown release date Free Available
Rank #20 #25
Score 6.07 5.64
Consistency 8.80 7.55
Cost per result 10.992 0.101
Total Cost $0.880 $0.008
Tests Correct
Wrong Tests 6 7
Attempt pass rate 61.9% 59.5%
Flaky tests 2 4
Output Tokens 19,576 11,407
Reasoning Tokens 11,081 26,106

Category Breakdown

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
Anthropic: Claude Opus 4.6 4.00 4.41 55.6% 2 897 1,000
OpenAI: gpt-oss-120b 7.00 9.81 66.7% 0 3,463 2,077
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
Anthropic: Claude Opus 4.6 10.00 10.00 100.0% 0 668 763
OpenAI: gpt-oss-120b 5.50 5.87 66.7% 1 241 1,114
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
Anthropic: Claude Opus 4.6 1.00 10.00 0.0% 0 16,328 7,928
OpenAI: gpt-oss-120b 1.00 4.41 22.2% 2 6,018 18,520
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
Anthropic: Claude Opus 4.6 9.50 9.99 100.0% 0 266 468
OpenAI: gpt-oss-120b 10.00 10.00 100.0% 0 120 1,770
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
Anthropic: Claude Opus 4.6 7.00 10.00 66.7% 0 556 593
OpenAI: gpt-oss-120b 5.00 7.13 44.4% 1 1,278 1,542
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
Anthropic: Claude Opus 4.6 10.00 10.00 100.0% 0 861 329
OpenAI: gpt-oss-120b 9.00 9.97 100.0% 0 287 1,083

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