Kimi K2.6
VS
Mistral Medium 3.1
Kimi K2.6 vs Mistral Medium 3.1: 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 21 of 22 task areas we tested; Mistral Medium 3.1 takes 1. Mistral Medium 3.1 costs 1.7× less per token ($2.4 vs $4.07 per 1M).
Mistral Medium 3.1 costs 1.7× less per token ($2.4 vs $4.07 per 1M).
Task by task
| Task area | Kimi K2.6 | Mistral Medium 3.1 | Winner |
|---|---|---|---|
| Chef / Home Cooking |
#7
/ 126
Strong
|
#116
/ 126
Needs editing
|
Kimi K2.6 |
| Customer Support |
#4
/ 113
Strong
|
#110
/ 113
Needs editing
|
Kimi K2.6 |
| Coding |
#5
/ 115
Excellent
|
#108
/ 115
Needs editing
|
Kimi K2.6 |
| Presentations & Decks |
#2
/ 110
Excellent
|
#105
/ 110
Usable
|
Kimi K2.6 |
| AI Strategy |
#19
/ 126
Strong
|
#120
/ 126
Usable
|
Kimi K2.6 |
| RAG, Safety & Grounding |
#18
/ 113
Excellent
|
#111
/ 113
Strong
|
Kimi K2.6 |
| Creative & Comedy | #11 / 110 | #100 / 110 | Kimi K2.6 |
| Content & Brand |
#22
/ 124
Strong
|
#110
/ 124
Needs editing
|
Kimi K2.6 |
| Executive Assistant |
#8
/ 112
Strong
|
#94
/ 112
Usable
|
Kimi K2.6 |
| Research & Competitive Analysis |
#19
/ 110
Excellent
|
#105
/ 110
Weak
|
Kimi K2.6 |
| Sales |
#15
/ 110
Strong
|
#92
/ 110
Usable
|
Kimi K2.6 |
| Structured Output |
#14
/ 113
Excellent
|
#91
/ 113
Strong
|
Kimi K2.6 |
| Data & Analytics |
#23
/ 110
Excellent
|
#87
/ 110
Excellent
|
Kimi K2.6 |
| Investor & Pitch |
#1
/ 66
Strong
|
#65
/ 66
Needs editing
|
Kimi K2.6 |
| Knowledge & Docs |
#22
/ 110
Strong
|
#77
/ 110
Usable
|
Kimi K2.6 |
| Legal & HR |
#22
/ 110
Excellent
|
#70
/ 110
Strong
|
Kimi K2.6 |
| Landing Pages |
#21
/ 72
Strong
|
#63
/ 72
Usable
|
Kimi K2.6 |
| Summarization & Meeting Notes |
#3
/ 110
Excellent
|
#39
/ 110
Excellent
|
Kimi K2.6 |
| Translation & Localization |
#22
/ 110
Excellent
|
#53
/ 110
Excellent
|
Kimi K2.6 |
| Frontend & Landing Pages |
#8
/ 109
Usable
|
#35
/ 109
Needs editing
|
Kimi K2.6 |
| Product & Project Management |
#53
/ 110
Strong
|
#50
/ 110
Strong
|
Mistral Medium 3.1 |
| Training & Education |
#45
/ 110
Excellent
|
#47
/ 110
Excellent
|
Kimi K2.6 |
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.
Customer Support
Duplicate charge (Cedar & Sage) (Resolution)
“The model perfectly incorporates all provided account facts and policy details without inventing any information, takes clear ownership of the resolution, provides the exact timeline for the refund, and maintains a warm, empathetic tone.”
“The model successfully addresses the duplicate charge and provides the correct refund timeline. However, it fabricates an account fact by guaranteeing the shipping status of the refill kit ('still on track'), which was not provided in the account facts. It also leaves an unresolved placeholder in the text. Fabricating account details triggers a hard gate failure.”
Frequently asked
Is Kimi K2.6 better than Mistral Medium 3.1?
Across 22 task areas we benchmarked, Kimi K2.6 ranks higher in 21 and Mistral Medium 3.1 in 1.
Which is cheaper, Kimi K2.6 or Mistral Medium 3.1?
Mistral Medium 3.1 costs 1.7× less per token ($2.4 vs $4.07 per 1M).
What is Kimi K2.6 better at?
Kimi K2.6 out-ranks Mistral Medium 3.1 at Chef / Home Cooking, Customer Support, Coding.
What is Mistral Medium 3.1 better at?
Mistral Medium 3.1 out-ranks Kimi K2.6 at Product & Project Management.
More comparisons
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Prompt × model results
12 test cases · 3 evals