Head-to-head comparison across 1benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Grok 4.3
75
LFM2.5-8B-A1B
50
Pick Grok 4.3 if you want the stronger benchmark profile. LFM2.5-8B-A1B only becomes the better choice if you want the cheaper token bill.
Inst. Following
+1.8 difference
Grok 4.3
LFM2.5-8B-A1B
$1.25 / $2.5
$0 / $0
209 t/s
N/A
12.36s
N/A
1M
128K
Pick Grok 4.3 if you want the stronger benchmark profile. LFM2.5-8B-A1B only becomes the better choice if you want the cheaper token bill.
Grok 4.3 is clearly ahead on the provisional aggregate, 75 to 50. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Grok 4.3's sharpest advantage is in instruction following, where it averages 81.3 against 79.5. The single biggest benchmark swing on the page is IFBench, 81.3% to 56.5%.
Grok 4.3 is also the more expensive model on tokens at $1.25 input / $2.50 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for LFM2.5-8B-A1B. That is roughly Infinityx on output cost alone. Grok 4.3 gives you the larger context window at 1M, compared with 128K for LFM2.5-8B-A1B.
Grok 4.3 is ahead on BenchLM's provisional leaderboard, 75 to 50. The biggest single separator in this matchup is IFBench, where the scores are 81.3% and 56.5%.
Grok 4.3 has the edge for instruction following in this comparison, averaging 81.3 versus 79.5. Inside this category, IFBench is the benchmark that creates the most daylight between them.
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