Kimi K2.5
VS
Kimi K2.6
Kimi K2.5 vs Kimi K2.6: which wins at real work?
22 task areas · same graded test runs · rank comparison only, so 0–100 and Elo collections never mix raw scores.
Kimi K2.6 wins 18 of 22 task areas we tested; Kimi K2.5 takes 4. Kimi K2.5 costs 1.7× less per token ($2.4 vs $4.07 per 1M).
Kimi K2.5 costs 1.7× less per token ($2.4 vs $4.07 per 1M).
Task by task
| Task area | Kimi K2.5 | Kimi K2.6 | Winner |
|---|---|---|---|
| Summarization & Meeting Notes |
#92
/ 110
Excellent
|
#3
/ 110
Excellent
|
Kimi K2.6 |
| Customer Support |
#50
/ 113
Strong
|
#4
/ 113
Strong
|
Kimi K2.6 |
| Chef / Home Cooking |
#44
/ 126
Usable
|
#7
/ 126
Strong
|
Kimi K2.6 |
| Knowledge & Docs |
#59
/ 110
Usable
|
#22
/ 110
Strong
|
Kimi K2.6 |
| Investor & Pitch |
#37
/ 66
Usable
|
#1
/ 66
Strong
|
Kimi K2.6 |
| Coding |
#38
/ 115
Strong
|
#5
/ 115
Excellent
|
Kimi K2.6 |
| Creative & Comedy | #42 / 110 | #11 / 110 | Kimi K2.6 |
| Structured Output |
#41
/ 113
Excellent
|
#14
/ 113
Excellent
|
Kimi K2.6 |
| Training & Education |
#22
/ 110
Excellent
|
#45
/ 110
Excellent
|
Kimi K2.5 |
| Frontend & Landing Pages |
#26
/ 109
Needs editing
|
#8
/ 109
Usable
|
Kimi K2.6 |
| Executive Assistant |
#23
/ 112
Strong
|
#8
/ 112
Strong
|
Kimi K2.6 |
| Product & Project Management |
#66
/ 110
Strong
|
#53
/ 110
Strong
|
Kimi K2.6 |
| Research & Competitive Analysis |
#31
/ 110
Strong
|
#19
/ 110
Excellent
|
Kimi K2.6 |
| Translation & Localization |
#34
/ 110
Excellent
|
#22
/ 110
Excellent
|
Kimi K2.6 |
| Content & Brand |
#33
/ 124
Strong
|
#22
/ 124
Strong
|
Kimi K2.6 |
| Presentations & Decks |
#12
/ 110
Excellent
|
#2
/ 110
Excellent
|
Kimi K2.6 |
| AI Strategy |
#28
/ 126
Strong
|
#19
/ 126
Strong
|
Kimi K2.6 |
| Legal & HR |
#31
/ 110
Excellent
|
#22
/ 110
Excellent
|
Kimi K2.6 |
| RAG, Safety & Grounding |
#12
/ 113
Excellent
|
#18
/ 113
Excellent
|
Kimi K2.5 |
| Data & Analytics |
#19
/ 110
Excellent
|
#23
/ 110
Excellent
|
Kimi K2.5 |
| Sales |
#19
/ 110
Strong
|
#15
/ 110
Strong
|
Kimi K2.6 |
| Landing Pages |
#20
/ 72
Strong
|
#21
/ 72
Strong
|
Kimi K2.5 |
Rank = position among every model config we tested in that task area (lower is better). Sorted by biggest gap first.
Same task, both models — judged
Both models answered the same test case; an independent judge graded each. Quotes are the judge's actual rationale.
Summarization & Meeting Notes
Northwind pipeline review (Executive Summary)
“The model invents an action item for Theo to correct Atlas on pricing, which was an internal correction.”
“The summary is flawless and perfectly faithful to the transcript. It correctly captures the corrected deal value, the scrapped pricing increase, the unassigned dataset cleanup, and the conditional nature of Priya's report. Action items are accurately attributed with correct deadlines, and the structure is concise and outcome-first.”
Frequently asked
Is Kimi K2.5 better than Kimi K2.6?
Across 22 task areas we benchmarked, Kimi K2.6 ranks higher in 18 and Kimi K2.5 in 4.
Which is cheaper, Kimi K2.5 or Kimi K2.6?
Kimi K2.5 costs 1.7× less per token ($2.4 vs $4.07 per 1M).
What is Kimi K2.5 better at?
Kimi K2.5 out-ranks Kimi K2.6 at Training & Education, RAG, Safety & Grounding, Data & Analytics.
What is Kimi K2.6 better at?
Kimi K2.6 out-ranks Kimi K2.5 at Summarization & Meeting Notes, Customer Support, Chef / Home Cooking.
More comparisons
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Prompt × model results
12 test cases · 3 evals