Head-to-head comparison across 3benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Grok 4.3
79
Kimi K2.6
84
Verified leaderboard positions: Grok 4.3 unranked · Kimi K2.6 #6
Pick Kimi K2.6 if you want the stronger benchmark profile. Grok 4.3 only becomes the better choice if knowledge is the priority or you want the cheaper token bill.
Coding
+24.7 difference
Knowledge
+0.1 difference
Multimodal
+1.6 difference
Grok 4.3
Kimi K2.6
$1.25 / $2.5
$0.95 / $4
209 t/s
N/A
12.36s
N/A
1M
256K
Pick Kimi K2.6 if you want the stronger benchmark profile. Grok 4.3 only becomes the better choice if knowledge is the priority or you want the cheaper token bill.
Kimi K2.6 is clearly ahead on the provisional aggregate, 84 to 79. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Kimi K2.6's sharpest advantage is in coding, where it averages 72 against 47.3. The single biggest benchmark swing on the page is SciCode, 47.3% to 52.2%. Grok 4.3 does hit back in knowledge, so the answer changes if that is the part of the workload you care about most.
Kimi K2.6 is also the more expensive model on tokens at $0.95 input / $4.00 output per 1M tokens, versus $1.25 input / $2.50 output per 1M tokens for Grok 4.3. Grok 4.3 gives you the larger context window at 1M, compared with 256K for Kimi K2.6.
Kimi K2.6 is ahead on BenchLM's provisional leaderboard, 84 to 79. The biggest single separator in this matchup is SciCode, where the scores are 47.3% and 52.2%.
Grok 4.3 has the edge for knowledge tasks in this comparison, averaging 53.9 versus 53.8. Inside this category, GPQA is the benchmark that creates the most daylight between them.
Kimi K2.6 has the edge for coding in this comparison, averaging 72 versus 47.3. Inside this category, SciCode is the benchmark that creates the most daylight between them.
Kimi K2.6 has the edge for multimodal and grounded tasks in this comparison, averaging 79.7 versus 78.1. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.
Estimates at 50,000 req/day · 1000 tokens/req average.
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