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Z.ai GLM 5 VS MoonshotAI Kimi K2.6

GLM 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 22 of 22 task areas we tested; GLM 5 takes 0. GLM 5 costs 1.6× less per token ($2.52 vs $4.07 per 1M).

0
Task areas won
22
49
Avg percentile
86
0
Top-3 finishes
3
$2.52
Price / 1M tokens
$4.07
Z.ai
Provider
MoonshotAI

GLM 5 costs 1.6× less per token ($2.52 vs $4.07 per 1M).

Task by task

Task area GLM 5 Kimi K2.6 Winner
Structured Output #94 / 113
Strong
#14 / 113
Excellent
Kimi K2.6
Frontend & Landing Pages #76 / 109
Weak
#8 / 109
Usable
Kimi K2.6
Creative & Comedy #72 / 110 #11 / 110 Kimi K2.6
Investor & Pitch #62 / 66
Usable
#1 / 66
Strong
Kimi K2.6
Executive Assistant #62 / 112
Strong
#8 / 112
Strong
Kimi K2.6
Sales #68 / 110
Usable
#15 / 110
Strong
Kimi K2.6
Chef / Home Cooking #57 / 126
Usable
#7 / 126
Strong
Kimi K2.6
Landing Pages #69 / 72
Needs editing
#21 / 72
Strong
Kimi K2.6
AI Strategy #66 / 126
Strong
#19 / 126
Strong
Kimi K2.6
Presentations & Decks #49 / 110
Excellent
#2 / 110
Excellent
Kimi K2.6
Summarization & Meeting Notes #48 / 110
Excellent
#3 / 110
Excellent
Kimi K2.6
Content & Brand #60 / 124
Strong
#22 / 124
Strong
Kimi K2.6
Coding #36 / 115
Strong
#5 / 115
Excellent
Kimi K2.6
Customer Support #35 / 113
Strong
#4 / 113
Strong
Kimi K2.6
RAG, Safety & Grounding #47 / 113
Excellent
#18 / 113
Excellent
Kimi K2.6
Research & Competitive Analysis #48 / 110
Strong
#19 / 110
Excellent
Kimi K2.6
Training & Education #67 / 110
Strong
#45 / 110
Excellent
Kimi K2.6
Data & Analytics #43 / 110
Excellent
#23 / 110
Excellent
Kimi K2.6
Legal & HR #37 / 110
Excellent
#22 / 110
Excellent
Kimi K2.6
Product & Project Management #58 / 110
Strong
#53 / 110
Strong
Kimi K2.6
Translation & Localization #26 / 110
Excellent
#22 / 110
Excellent
Kimi K2.6
Knowledge & Docs #24 / 110
Strong
#22 / 110
Strong
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.

Structured Output

Event details to typed schema (Schema Adherence)
GLM 5 6/100

“The model failed to return valid JSON without wrapper text due to the inclusion of markdown fences.”

Kimi K2.6 100/100

“The model perfectly followed all instructions, adhering strictly to the schema, accurately extracting the data, correctly handling the missing date with a null value, and providing only the raw JSON without any wrapper text.”

Support ticket to schema (Schema Adherence)
GLM 5 10/100

“The model output is missing the opening curly brace '{', resulting in invalid JSON. This is a critical failure, rendering the output unparseable, even though the extracted values themselves appear correct in the raw text.”

Kimi K2.6 100/100

“The model perfectly followed the schema, extracted all values correctly, used null for the unassigned field, and provided no wrapper text.”

Sales

Value-add second touch after no reply (Follow-up & Break-up)
GLM 5 0/100

“The model completely failed the task, outputting only a single digit instead of the requested follow-up email.”

Kimi K2.6 94/100

“The model perfectly executes the prompt constraints, delivering a highly relevant, zero-fluff follow-up that adds specific value without guilt-tripping. The tone is spot-on for the logistics industry, and it avoids all common AI email tropes.”

Landing Pages

Internal knowledge bot for law firms (Five-Second Clarity Test)
GLM 5 0/100

“The model completely failed to respond to the prompt, outputting only the number '1'. None of the requested elements were provided.”

Kimi K2.6 90/100

“The response is production-ready, perfectly addressing the target audience, objections, and proof points with concise, high-impact copy. It demonstrates excellent task-specific judgment, particularly with the highly relevant secondary CTA.”

Frequently asked

Is GLM 5 better than Kimi K2.6?

Across 22 task areas we benchmarked, Kimi K2.6 ranks higher in 22 and GLM 5 in 0.

Which is cheaper, GLM 5 or Kimi K2.6?

GLM 5 costs 1.6× less per token ($2.52 vs $4.07 per 1M).

What is Kimi K2.6 better at?

Kimi K2.6 out-ranks GLM 5 at Structured Output, Frontend & Landing Pages, Creative & Comedy.

Full GLM 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.
  • Compare models side by side with quality, cost and latency in one matrix.
  • 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