The Client

A mid-size Shopify store doing roughly $200K/month in revenue across home goods. They had hired an agency to build AI tools for product description generation, customer support chatbot, and review summarization. The tools worked — but the monthly bill had grown to $1,400 in API costs alone, not counting infrastructure.

They came to me asking if AI was even worth it anymore.

The Audit

I ran a green ML audit — typically 4–6 hours of work. Four findings.

Finding 1: GPT-4 used for tasks GPT-3.5 handles. Product descriptions don’t need a frontier model. The agency had set every API call to GPT-4 by default. Switching to GPT-3.5 for 80% of calls — keeping GPT-4 only for the highest-stakes outputs — cut the description bill by 92%.

Finding 2: No caching. The customer support chatbot recomputed answers to identical questions thousands of times per month. A simple cache layer cut chatbot API calls by 71%.

Finding 3: Bloated prompts. Their prompts averaged 1,800 tokens. After a rewrite focused on essential context only, the same outputs needed 600 tokens. 67% reduction.

Finding 4: Synchronous review summarization. Reviews were summarized one at a time on page load. Moving to a nightly batch with cached results meant most page loads now had zero API cost.

The Result

Final monthly bill: $530, down from $1,400. A 62% reduction in 10 days of work. Output quality was rated by the client team as “the same or better” across all four use cases.

The client redirected the saved budget into Pinterest advertising, which drove additional revenue. Net effect: the audit paid for itself within 12 days.

The Principle

Most AI tools are overbuilt. Vendors and agencies default to the biggest model, the longest prompt, the simplest architecture — because it works, and they don’t pay the bill.

Green ML asks a different question: what’s the smallest, cheapest, fastest setup that delivers the result we need? The answer is usually 30–60% cheaper than what you’re running today.

Want an Audit for Your Store?

If you’re spending $200+/month on AI infrastructure, you almost certainly have similar waste. A green ML audit is typically 1–2 weeks and pays for itself within 30 days. Hire me on Fiverr or [email me directly](mailto:hello@ahmadzia.com?subject=Green AI Audit).