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Anthropic Claude Haiku 4.5 VS MoonshotAI Kimi K2.6

Claude Haiku 4.5 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 19 of 22 task areas we tested; Claude Haiku 4.5 takes 3. Kimi K2.6 costs 1.5× less per token ($4.07 vs $6 per 1M).

3
Task areas won
19
37
Avg percentile
86
0
Top-3 finishes
3
$6.0
Price / 1M tokens
$4.07
Anthropic
Provider
MoonshotAI

Kimi K2.6 costs 1.5× less per token ($4.07 vs $6 per 1M).

Task by task

Task area Claude Haiku 4.5 Kimi K2.6 Winner
Chef / Home Cooking #113 / 126
Needs editing
#7 / 126
Strong
Kimi K2.6
Customer Support #99 / 113
Usable
#4 / 113
Strong
Kimi K2.6
Structured Output #109 / 113
Usable
#14 / 113
Excellent
Kimi K2.6
Coding #94 / 115
Usable
#5 / 115
Excellent
Kimi K2.6
Presentations & Decks #88 / 110
Strong
#2 / 110
Excellent
Kimi K2.6
RAG, Safety & Grounding #97 / 113
Strong
#18 / 113
Excellent
Kimi K2.6
Creative & Comedy #84 / 110 #11 / 110 Kimi K2.6
AI Strategy #91 / 126
Strong
#19 / 126
Strong
Kimi K2.6
Content & Brand #89 / 124
Usable
#22 / 124
Strong
Kimi K2.6
Executive Assistant #73 / 112
Strong
#8 / 112
Strong
Kimi K2.6
Sales #80 / 110
Usable
#15 / 110
Strong
Kimi K2.6
Investor & Pitch #63 / 66
Needs editing
#1 / 66
Strong
Kimi K2.6
Knowledge & Docs #71 / 110
Usable
#22 / 110
Strong
Kimi K2.6
Landing Pages #61 / 72
Usable
#21 / 72
Strong
Kimi K2.6
Research & Competitive Analysis #59 / 110
Usable
#19 / 110
Excellent
Kimi K2.6
Data & Analytics #53 / 110
Excellent
#23 / 110
Excellent
Kimi K2.6
Legal & HR #48 / 110
Excellent
#22 / 110
Excellent
Kimi K2.6
Summarization & Meeting Notes #27 / 110
Excellent
#3 / 110
Excellent
Kimi K2.6
Product & Project Management #38 / 110
Strong
#53 / 110
Strong
Claude Haiku 4.5
Training & Education #36 / 110
Excellent
#45 / 110
Excellent
Claude Haiku 4.5
Translation & Localization #27 / 110
Excellent
#22 / 110
Excellent
Kimi K2.6
Frontend & Landing Pages #7 / 109
Usable
#8 / 109
Usable
Claude Haiku 4.5

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.

Presentations & Decks

Strategy deck: defend vs incumbent (Northwind) (Deck Storyline)
Claude Haiku 4.5 4/100

“The response lacks a governing thought upfront, misunderstands action titles, and presents arguments that are not strictly MECE.”

Kimi K2.6 100/100

“The outline perfectly executes an answer-first structure, leading with the recommendation and following with MECE arguments. Titles are full-sentence takeaways, slides are highly focused with a single line of evidence, and it closes with a clear, specific ask.”

Growth deck: lift activation (Cedar & Sage) (Deck Storyline)
Claude Haiku 4.5 54/100

“The outline fails the answer-first requirement by burying the recommendation behind situation and complication slides. Furthermore, the slide titles are topic labels and imperative commands rather than full-sentence takeaways. It does, however, successfully adhere to the one-idea-per-slide constraint and includes a specific ask at the end.”

Kimi K2.6 100/100

“The outline perfectly executes an answer-first executive structure. It leads with the governing thought, supports it with four MECE strategic pillars, and ends with a clear ask. All titles are strong action-oriented takeaways, and the signal-to-noise ratio is excellent with exactly one idea and one piece of evidence per slide.”

Frequently asked

Is Claude Haiku 4.5 better than Kimi K2.6?

Across 22 task areas we benchmarked, Kimi K2.6 ranks higher in 19 and Claude Haiku 4.5 in 3.

Which is cheaper, Claude Haiku 4.5 or Kimi K2.6?

Kimi K2.6 costs 1.5× less per token ($4.07 vs $6 per 1M).

What is Claude Haiku 4.5 better at?

Claude Haiku 4.5 out-ranks Kimi K2.6 at Product & Project Management, Training & Education, Frontend & Landing Pages.

What is Kimi K2.6 better at?

Kimi K2.6 out-ranks Claude Haiku 4.5 at Chef / Home Cooking, Customer Support, Structured Output.

Full Claude Haiku 4.5 review → Full Kimi K2.6 review → Full model leaderboard →

More comparisons

This page is Spring Prompt, running in public

We just did this for every model. Do it for your prompt.

The rankings above come from running real tasks through real models and scoring every output. Spring Prompt is that same engine — pointed at your prompt, your test cases, and your definition of good.

  • Generate test cases from your prompt — no eval set required to start.
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  • Optimise the winner until the scores say it's ready to ship.
Experiment · Cold outreach email

Prompt × model results

12 test cases · 3 evals
Claude Opus
GPT-5
Gemini
v1
7.1
6.8
7.4
v2
8.3
7.9
8.0
v3
9.2
8.6
8.4
Best combo: v3 × Claude Opus
9.2 quality · $0.004/run · 1.8s