Look, we need to talk about something awkward.
You know that Kubernetes deployment you generated with AI last Tuesday? The one where you typed "generate a production-ready deployment for my Node.js API" and got back 47 lines of YAML that looked professional?
Yeah. We need to talk about lines 23-31.
resources:
requests:
memory: "512Mi" # AI: "this seems reasonable"
cpu: "500m" # AI: "half a core, very sensible"
limits:
memory: "2Gi" # AI: "better safe than sorry!"
cpu: "2" # AI: "room to grow ™️"See that? That's $847/year per replica. You have 12 replicas. That's $10,164/year for a service that uses 73MB of memory and 0.02 CPU cores.
AI is really good at generating "enterprise-grade" configs. Unfortunately, "enterprise-grade" apparently means "designed for a company that hates money."
Be honest: How often do you use AI to generate Kubernetes YAML?
The Study: 847 AI-Generated Deployments
Here's what we did. We collected (with permission) 847 Kubernetes deployments where engineers confirmed they used AI assistance to generate the resource specs. Then we compared actual usage over 30 days.
We also checked our own deployments. Three of them were AI-generated. We were wasting $2,847/month. This article is partially a cry for help.
Why AI Gets This So Wrong
AI models are trained on public repos, Stack Overflow, and documentation. Know what those have in common? Nobody posts their actual production metrics.
So AI learns from:
- →Example configs that use "safe" round numbers (512Mi, 1Gi, 2Gi)
- →Best practice guides that say "always set limits" (true, but with what values?)
- →Tutorials optimized for "it works" not "it's efficient"
The result? AI defaults to what looks right, not what is right for your workload.
When you get AI-generated YAML, do you adjust the resource values?
The "Magic Numbers" AI Loves (And Why They're Wrong)
We found patterns. Oh boy, did we find patterns.
AI's favorite "starter" memory. Actual need for most Node.js apps: 64-128Mi. You're paying 4-8x more than necessary.
The "production ready" memory limit. Actual usage for 90% of these services: under 400Mi. You're reserving 5x what you need.
Half a CPU core as the default request. Most APIs idle at 10-50m. You're blocking 10-50x more CPU than you use.
"512Mi" is the new "password123" – it's everywhere, it's never right, and everyone knows it's wrong but keeps using it anyway.
Real Examples (Names Changed to Protect the Guilty)
Let's look at some real deployments from our study:
memory: 1Gi / 4Gi limitmemory: 89Micpu: 1 / memory: 2Gicpu: 0.08 / memory: 156MiHow does seeing this waste data make you feel?
How To Actually Fix This (5 Minutes)
Okay, enough doom. Here's the actual fix.
Step 1: See what you're actually using
# This one command shows you the truth
kubectl top pods -A --sort-by=memory
# Or run our audit (shameless plug)
curl -sL wozz.io/audit.sh | bashStep 2: Right-size based on P99, not vibes
resources:
requests:
memory: "512Mi"
cpu: "500m"
limits:
memory: "2Gi"
cpu: "2"resources:
requests:
memory: "128Mi" # P99 + 20% buffer
cpu: "50m" # actual usage
limits:
memory: "256Mi" # 2x request
cpu: "200m" # burst headroomStep 3: Add this to your AI prompts
When asking AI to generate K8s configs, add this context:
"This is a low-traffic API that handles ~100 req/sec.
It's a Node.js service with no heavy computation.
Start with minimal resources (64Mi memory, 25m CPU)
and I'll adjust based on actual metrics."Giving AI context about your actual workload makes it 3x more accurate (we tested this too).
We now have a company rule: no AI-generated resource specs go to production without checking kubectl top first. It's saved us $4,200/month so far. Yes, we're embarrassed it took us this long.
After reading this, will you check your resource specs?
The Uncomfortable Truth
AI is incredible for generating boilerplate. It saves hours of typing and googling syntax. We're not anti-AI – we literally use it to help write these blog posts.
But AI doesn't know your workload. It doesn't see your metrics. It optimizes for "looks correct" not "is efficient."
The solution isn't to stop using AI. It's to verify the expensive parts. Resource specs are expensive. Check them.
In 5 years, we'll look back at 2026's AI-generated configs the same way we look at 2010's "SELECT * FROM users" code in production. Technically functional. Financially catastrophic.
See your actual waste in 2 minutes
Run our free audit. It reads your cluster (read-only), shows you what's overprovisioned, and tells you exactly how much you're wasting. No signup required.
curl -sL wozz.io/audit.sh | bashWas this useful? Terrible? Life-changing?
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