Head-to-head comparison across 5benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Sibling matchup inside the Kimi K2.5 family.
Kimi K2.5
68
Kimi K2.5 (Reasoning)
78
Verified leaderboard positions: Kimi K2.5 #9 · Kimi K2.5 (Reasoning) unranked
Kimi K2.5 makes more sense if you need the larger 256K context window or you would rather avoid the extra latency and token burn of a reasoning model, while Kimi K2.5 (Reasoning) is the cleaner fit if knowledge is the priority or you want the stronger reasoning-first profile.
Agentic
Coding
+12.6 difference
Knowledge
+22.2 difference
Math
Multimodal
Kimi K2.5
Kimi K2.5 (Reasoning)
$0.5 / $2.8
$null / $null
45 t/s
N/A
2.38s
N/A
256K
128K
Kimi K2.5 makes more sense if you need the larger 256K context window or you would rather avoid the extra latency and token burn of a reasoning model, while Kimi K2.5 (Reasoning) is the cleaner fit if knowledge is the priority or you want the stronger reasoning-first profile.
Kimi K2.5 and Kimi K2.5 (Reasoning) sit in the same Kimi K2.5 family. This page is less about two unrelated model lineages and more about how the siblings trade off on benchmark shape, token costs, and practical limits like context window.
Kimi K2.5 (Reasoning) is clearly ahead on the provisional aggregate, 78 to 68. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Kimi K2.5 (Reasoning)'s sharpest advantage is in knowledge, where it averages 87.3 against 65.1.
Kimi K2.5 (Reasoning) is the reasoning model in the pair, while Kimi K2.5 is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use. Kimi K2.5 gives you the larger context window at 256K, compared with 128K for Kimi K2.5 (Reasoning).
Kimi K2.5 and Kimi K2.5 (Reasoning) are sibling variants in the Kimi K2.5 family, so the right pick depends on whether you value the better benchmark line, cheaper tokens, or the larger context window. Kimi K2.5 (Reasoning) is ahead on BenchLM's provisional leaderboard 78 to 68.
Kimi K2.5 (Reasoning) has the edge for knowledge tasks in this comparison, averaging 87.3 versus 65.1. Kimi K2.5 stays close enough that the answer can still flip depending on your workload.
Kimi K2.5 (Reasoning) has the edge for coding in this comparison, averaging 76.8 versus 64.2. Kimi K2.5 stays close enough that the answer can still flip depending on your workload.
Kimi K2.5 and Kimi K2.5 (Reasoning) are effectively tied for math here, both landing at 96.1 on average.
Kimi K2.5 and Kimi K2.5 (Reasoning) are effectively tied for agentic tasks here, both landing at 54.6 on average.
Kimi K2.5 and Kimi K2.5 (Reasoning) are effectively tied for multimodal and grounded tasks here, both landing at 78.5 on average.
Estimates at 50,000 req/day · 1000 tokens/req average.
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