Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.
Grok 4.1 is clearly ahead on the aggregate, 84 to 66. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Grok 4.1's sharpest advantage is in multimodal & grounded, where it averages 93.2 against 66.7. The single biggest benchmark swing on the page is MMMU-Pro, 95 to 64.
Grok 4.1 is also the more expensive model on tokens at $3.00 input / $15.00 output per 1M tokens, versus $0.10 input / $0.30 output per 1M tokens for Step 3.5 Flash. That is roughly 50.0x on output cost alone. Grok 4.1 gives you the larger context window at 1M, compared with 256K for Step 3.5 Flash.
Pick Grok 4.1 if you want the stronger benchmark profile. Step 3.5 Flash only becomes the better choice if you want the cheaper token bill.
Grok 4.1
76.9
Step 3.5 Flash
60.2
Grok 4.1
73.4
Step 3.5 Flash
47.1
Grok 4.1
93.2
Step 3.5 Flash
66.7
Grok 4.1
91.9
Step 3.5 Flash
78.3
Grok 4.1
79.5
Step 3.5 Flash
60.8
Grok 4.1
93
Step 3.5 Flash
87
Grok 4.1
92.8
Step 3.5 Flash
82.8
Grok 4.1
96.8
Step 3.5 Flash
84.5
Grok 4.1 is ahead overall, 84 to 66. The biggest single separator in this matchup is MMMU-Pro, where the scores are 95 and 64.
Grok 4.1 has the edge for knowledge tasks in this comparison, averaging 79.5 versus 60.8. Inside this category, HLE is the benchmark that creates the most daylight between them.
Grok 4.1 has the edge for coding in this comparison, averaging 73.4 versus 47.1. Inside this category, SWE-bench Verified is the benchmark that creates the most daylight between them.
Grok 4.1 has the edge for math in this comparison, averaging 96.8 versus 84.5. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.
Grok 4.1 has the edge for reasoning in this comparison, averaging 91.9 versus 78.3. Inside this category, LongBench v2 is the benchmark that creates the most daylight between them.
Grok 4.1 has the edge for agentic tasks in this comparison, averaging 76.9 versus 60.2. Inside this category, OSWorld-Verified is the benchmark that creates the most daylight between them.
Grok 4.1 has the edge for multimodal and grounded tasks in this comparison, averaging 93.2 versus 66.7. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.
Grok 4.1 has the edge for instruction following in this comparison, averaging 93 versus 87. Inside this category, IFEval is the benchmark that creates the most daylight between them.
Grok 4.1 has the edge for multilingual tasks in this comparison, averaging 92.8 versus 82.8. Inside this category, MGSM is the benchmark that creates the most daylight between them.
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