If it's not the prompt: check context. Too much noise, missing info, or wrong format. Structure your input like you'd explain the task to a careful, literal-minded person.
I can go from idea to working demo in a weekend. Not because I'm fast โ because I scope ruthlessly.
Friday: one sentence describing what the demo does and who it's for. If I can't write it, I don't build yet.
[2/6] 1. I over-engineered the pipeline before testing a single prompt. Spent days on architecture that a 20-line prompt chain eventually replaced. Validate the core logic first, always.
[5/6] 4. I added every tool I thought it might need. More tools = more chances to pick the wrong one. Start minimal. Add tools only when the agent demonstrably needs them.
Nobody tells you the real cost of building an AI product. It's not the API bill.
It's time spent debugging outputs that are 90% right. That last 10% is where you lose days. The model didn't fail โ your expectations were underspecified.
Not every task belongs in an AI workflow. Here's the 2-question filter I use before automating anything:
1. Is the input clearly defined?
2. Is a good output recognizable without subjective judgment?
API or no-code AI tool? 3 questions decide it:
1. Do you need custom data or integrations?
2. Will this scale beyond a few hundred users or runs?
3. Do you need control over the model's behavior?
"Vibe coding" isn't a gimmick โ it's a real shift in how software gets built.
You describe what you want. AI writes the code. You review, redirect, and iterate. Most people are still sleeping on how much this compresses the build cycle.
I've tested more AI tools than I can count. Here's what actually survived 6 months of daily use โ and what got cut:
Cut: every tool that required me to live in its ecosystem. Anything where "just use our dashboard" was the answer to "how do I integrate this?" got replaced fast.
[4/4] Fine-tune only when you need to change model behavior or output format at scale โ and prompt engineering can't get you there consistently. Fine-tuning is expensive and slow to iterate.
[2/4] Prompt engineering first. Always. If a well-structured prompt solves your problem, you're done. 80% of use cases never need anything beyond this step.
[3/4] RAG when you need the model to reference specific, current, or proprietary data it wasn't trained on. Don't fine-tune for knowledge โ that's exactly what RAG is built for.
After: "You are a conversion copywriter. Write a 2-sentence product description for a B2B SaaS tool that helps ops teams track AI agent outputs. Lead with the business outcome."