Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.
Mercury 2 is clearly ahead on the aggregate, 65 to 44. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Mercury 2's sharpest advantage is in mathematics, where it averages 80.9 against 48.3. The single biggest benchmark swing on the page is MuSR, 82 to 34.
Claude 4.1 Opus Thinking gives you the larger context window at 200K, compared with 128K for Mercury 2.
Pick Mercury 2 if you want the stronger benchmark profile. Claude 4.1 Opus Thinking only becomes the better choice if you need the larger 200K context window.
Mercury 2
63.7
Claude 4.1 Opus Thinking
46.7
Mercury 2
41.1
Claude 4.1 Opus Thinking
21.8
Mercury 2
68.3
Claude 4.1 Opus Thinking
59.3
Mercury 2
80.1
Claude 4.1 Opus Thinking
49.4
Mercury 2
57.2
Claude 4.1 Opus Thinking
34.3
Mercury 2
84
Claude 4.1 Opus Thinking
66
Mercury 2
79.7
Claude 4.1 Opus Thinking
58.7
Mercury 2
80.9
Claude 4.1 Opus Thinking
48.3
Mercury 2 is ahead overall, 65 to 44. The biggest single separator in this matchup is MuSR, where the scores are 82 and 34.
Mercury 2 has the edge for knowledge tasks in this comparison, averaging 57.2 versus 34.3. Inside this category, GPQA is the benchmark that creates the most daylight between them.
Mercury 2 has the edge for coding in this comparison, averaging 41.1 versus 21.8. Inside this category, HumanEval is the benchmark that creates the most daylight between them.
Mercury 2 has the edge for math in this comparison, averaging 80.9 versus 48.3. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.
Mercury 2 has the edge for reasoning in this comparison, averaging 80.1 versus 49.4. Inside this category, MuSR is the benchmark that creates the most daylight between them.
Mercury 2 has the edge for agentic tasks in this comparison, averaging 63.7 versus 46.7. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
Mercury 2 has the edge for multimodal and grounded tasks in this comparison, averaging 68.3 versus 59.3. Inside this category, OfficeQA Pro is the benchmark that creates the most daylight between them.
Mercury 2 has the edge for instruction following in this comparison, averaging 84 versus 66. Inside this category, IFEval is the benchmark that creates the most daylight between them.
Mercury 2 has the edge for multilingual tasks in this comparison, averaging 79.7 versus 58.7. Inside this category, MGSM is the benchmark that creates the most daylight between them.
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