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OpenAI GPT-5.4 Mini VS MoonshotAI Kimi K2.7 Code

GPT-5.4 Mini vs Kimi K2.7 Code: 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 K2.7 Code wins 14 of 22 task areas we tested; GPT-5.4 Mini takes 8. Kimi K2.7 Code costs 1.2× less per token ($4.24 vs $5.25 per 1M).

8
Task areas won
14
63
Avg percentile
73
2
Top-3 finishes
0
$5.25
Price / 1M tokens
$4.24
OpenAI
Provider
MoonshotAI

Kimi K2.7 Code costs 1.2× less per token ($4.24 vs $5.25 per 1M).

Task by task

Task area GPT-5.4 Mini Kimi K2.7 Code Winner
Executive Assistant #87 / 112
Usable
#6 / 112
Strong
Kimi K2.7 Code
Structured Output #1 / 113
Excellent
#46 / 113
Excellent
GPT-5.4 Mini
Training & Education #79 / 110
Strong
#39 / 110
Excellent
Kimi K2.7 Code
Investor & Pitch #52 / 66
Usable
#15 / 66
Strong
Kimi K2.7 Code
Content & Brand #84 / 124
Usable
#48 / 124
Strong
Kimi K2.7 Code
Data & Analytics #65 / 110
Excellent
#31 / 110
Excellent
Kimi K2.7 Code
Landing Pages #45 / 72
Usable
#17 / 72
Strong
Kimi K2.7 Code
Summarization & Meeting Notes #19 / 110
Excellent
#47 / 110
Excellent
GPT-5.4 Mini
Translation & Localization #21 / 110
Excellent
#48 / 110
Excellent
GPT-5.4 Mini
Chef / Home Cooking #83 / 126
Usable
#58 / 126
Usable
Kimi K2.7 Code
RAG, Safety & Grounding #42 / 113
Excellent
#21 / 113
Excellent
Kimi K2.7 Code
Coding #24 / 115
Strong
#41 / 115
Strong
GPT-5.4 Mini
Frontend & Landing Pages #38 / 109
Needs editing
#54 / 109
Needs editing
GPT-5.4 Mini
Knowledge & Docs #3 / 110
Excellent
#16 / 110
Excellent
GPT-5.4 Mini
Creative & Comedy #56 / 110 #44 / 110 Kimi K2.7 Code
Legal & HR #26 / 110
Excellent
#14 / 110
Excellent
Kimi K2.7 Code
Customer Support #21 / 113
Strong
#10 / 113
Strong
Kimi K2.7 Code
Presentations & Decks #16 / 110
Excellent
#5 / 110
Excellent
Kimi K2.7 Code
Product & Project Management #19 / 110
Excellent
#10 / 110
Excellent
Kimi K2.7 Code
Research & Competitive Analysis #11 / 110
Excellent
#20 / 110
Excellent
GPT-5.4 Mini
Sales #40 / 110
Usable
#48 / 110
Usable
GPT-5.4 Mini
AI Strategy #48 / 126
Strong
#44 / 126
Strong
Kimi K2.7 Code

Rank = position among every model config we tested in that task area (lower is better). Sorted by biggest gap first.

Frequently asked

Is GPT-5.4 Mini better than Kimi K2.7 Code?

Across 22 task areas we benchmarked, Kimi K2.7 Code ranks higher in 14 and GPT-5.4 Mini in 8.

Which is cheaper, GPT-5.4 Mini or Kimi K2.7 Code?

Kimi K2.7 Code costs 1.2× less per token ($4.24 vs $5.25 per 1M).

What is GPT-5.4 Mini better at?

GPT-5.4 Mini out-ranks Kimi K2.7 Code at Structured Output, Summarization & Meeting Notes, Translation & Localization.

What is Kimi K2.7 Code better at?

Kimi K2.7 Code out-ranks GPT-5.4 Mini at Executive Assistant, Training & Education, Investor & Pitch.

Full GPT-5.4 Mini review → Full Kimi K2.7 Code 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