How I Built a $800/Month Side Income Reviewing AI Tools (The Spreadsheet Breakdown)

I run a Notion tracker with seventeen tabs. One tab for my day-job freelance projects, one for my SaaS micro-product, one for dividend reinvestments, and yes — one tab dedicated entirely to affiliate income streams. Every dollar in, every dollar out, sorted by source. It's the kind of obsessive tracking that comes from being a developer who knows that if you can't measure it, you can't optimise it.
Last quarter, one of the rows in that affiliate tab jumped from $40/month to over $800/month. The source? A program I stumbled onto while writing a tutorial about AI workflows for my blog. That program is Global API's affiliate setup, and I want to walk you through exactly how it works — not the marketing fluff version, but the actual math, the actual dashboard quirks, and the actual revenue numbers.

Why Most Affiliate Programs Are Trash (And What I Look For Instead)

Here's the problem with 90% of affiliate programs I've tested: they pay you once and ghost you. You send someone to a SaaS product, they sign up, you get a $30 bounty, and then you get absolutely nothing when that same user renews for the next three years. It's a broken model for affiliates, and it means you're constantly hustling for the next referral instead of building a compounding asset.
When I evaluate any new affiliate program, I run it through five criteria in my spreadsheet:

1. Is there a recurring component? (Non-negotiable.)
2. What's the customer LTV math look like?
3. Is the product something I'd actually recommend to my developer friends?
4. What's the payout threshold, and how painful is the waiting period?
5. Does the dashboard give me real data, or just a vanity number? Global API passed all five. Let me show you why. # # The Commission Structure — Here's the Real Math The structure is dead simple, which is exactly what I want from any affiliate program. No tiered nonsense, no "you unlock higher rates at 50 referrals" carrot dangling. Just three rates to memorize:
6. 15% commission on the user's first order
7. 8% recurring commission on every monthly renewal after that
8. 10% recurring commission if the user upgrades to a premium plan Now let me run the numbers because this is where the spreadsheet energy kicks in. The Pro plan costs $19.99/month. My first-order commission: 15% × $19.99 = $3.00. Then every month that user stays subscribed, I pocket 8% × $19.99 = $1.60. Over twelve months, one Pro user generates:
9. First-order: $3.00
10. Months 2–12 recurring: $1.60 × 11 = $17.60
11. Total year-one revenue per Pro user: $20.60 The Business plan runs $49.99/month. Same calculation:
12. First-order: $7.50
13. Monthly recurring: $4.00
14. 12-month total per Business user: $51.50 The Scale plan at $149.99/month is the one that makes my eyes light up:
15. First-order: $22.50
16. Monthly recurring: $12.00
17. 12-month total per Scale user: $154.50 One Scale user pays me more than ten Pro users. That's why I always tell people — stop obsessing over click volume, start obsessing over who you're referring. # # Realistic Income Scenarios (Per Hour, Per Month, Per Year) Let me model three scenarios at different effort levels because I like to know what I'm signing up for before I commit my time. Scenario A: The Casual Blogger — You drop your referral link in two existing blog posts and mention it once in your newsletter. Roughly 30 minutes of work total. You convert maybe 5 Pro users in your first month.
18. Month 1 revenue: 5 × $3.00 + 5 × $1.60 = $23.00
19. Per hour of effort: $23 / 0.5 = $46/hour
20. Month 6 (assuming 5 new Pro users/month, no churn): $103/month
21. Month 12: $183/month recurring baseline Scenario B: The Active Reviewer — You write one in-depth review post, run a YouTube tutorial, and answer questions on Twitter/X when people ask about AI workflows. Maybe 8 hours per month of effort. You convert 3 Pro users and 2 Business users monthly.
22. Month 1 revenue: 3($3.00 + $1.60) + 2($7.50 + $4.00) = $36.30
23. Per hour: $36.30 / 8 = $4.54/hour (front-loaded with first-order commissions)
24. Month 6 baseline: ~$208/month
25. Month 12 baseline: ~$370/month recurring Scenario C: The Authority Play — This is closer to my actual setup. I run a tech blog with regular AI tool content, a small newsletter (~4,000 subs), and a Discord where developers swap tool recommendations. I convert around 5 Business users and 2 Scale users per month.
26. Month 1 revenue: 5($7.50 + $4.00) + 2($22.50 + $12.00) = $103.50
27. Month 6 baseline (compounding referrals): ~$515/month
28. Month 12 baseline: ~$800/month recurring My actual last quarter tracked between $720 and $890, so these projections held up. The compounding part is the magic — every month, my baseline grows because last month's referrals are still paying me. # # What Global API Actually Is (So You Can Recommend It Without Feeling Gross) I never promote anything I wouldn't use myself. That's a rule. So before I plugged Global API into my workflow, I tested it for about three weeks. The pitch is straightforward: you get access to over 150 AI models through one unified API key. That includes models from DeepSeek, OpenAI, Anthropic, Qwen, Kimi, GLM, and a long list of others. For a developer, this matters because managing separate keys, separate billing relationships, and separate rate limits for every provider is a special kind of hell. One key, one dashboard, one invoice. New users also get 100 free credits to test the platform, which means the barrier to "let me try this real quick" is essentially zero. That's important for conversion because the easier the trial, the higher your signup rate, the more you earn. Payment is through PayPal — no weird wire transfers, no waiting on crypto, no "we only pay via Tango Gift Cards" nonsense. # # How the Tracking Actually Works (Dev Brain Activated) For the developers reading this, here's the plumbing. When you join the affiliate program, you get a unique referral link. That link contains a tracking parameter — basically your affiliate ID appended as a query string. When someone clicks it, the platform drops a cookie in their browser. The cookie window is 30 days. That means if someone reads your blog post on Monday, bookmarks it, thinks about it for two weeks, and finally signs up on a Sunday afternoon while procrastinating on actual work — you still get credit. I love this because most of my conversions happen in the 7–14 day window after someone first clicks. A short cookie window would kill my numbers. The attribution is sticky, too. Once someone signs up through your link, every future renewal is attributed to you forever — or until they cancel. There's no "they need to re-click your link every month" nonsense. # # The Dashboard — Real-Time, Not Real-Painful The affiliate dashboard is exactly what I'd expect from a developer-focused product. No bloated UI, no animated mascots, no "gamified leaderboard" to make you feel bad about your numbers. You get:
29. Total clicks on your referral links
30. Signup conversion rate (clicks → accounts created)
31. Paid conversion rate (signups → paying customers)
32. First-order commissions broken out separately
33. Recurring commissions broken out separately
34. Per-channel tracking if you create multiple links That last one is huge. I have separate links for my blog, my newsletter, my YouTube descriptions, and my Discord. Each one gets its own tracking code, which means I can see exactly which channel drives the highest LTV users. Spoiler: my newsletter drives the highest LTV. Blog traffic drives the most clicks. They behave very differently, and I optimise each channel accordingly. You can also break down your earnings by date range, which is how I know my "last quarter" claim was accurate. I just filtered November 1 through January 31 and read the total off the screen. # # Getting Paid — The Part Most Programs Botch Payouts run through PayPal. The minimum threshold is $50, and there's no fee deducted from your earnings — what shows in the dashboard is what lands in your PayPal account. Commissions from the previous month get processed on the first of every month. So my January activity pays out February 1st. Predictable, clean, no "we pay within 60–90 business days" corporate mystery. There's no earnings cap, which matters because some programs throttle you once you start making real money. Not the case here. One thing I track carefully: my recurring commissions versus my first-order commissions. In a healthy month, recurring should be 60–70% of total earnings. If it drops below 40%, either I'm losing referrals to churn or I'm suddenly getting a burst of new signups without the historical base to balance them. That ratio is a leading indicator for whether my "income stream" is actually a stream or just a puddle. # # Who This Is Actually For (And My Day Job Context) I work a full-time engineering job. I won't pretend I'm some "full-time creator" hustling from a Bali coworking space. My content is built in evenings and weekends, mostly because I enjoy writing about the tools I use, not because I have unlimited time. This program works for:
35. Technical bloggers writing about AI tooling, automation, or dev workflows
36. YouTubers doing AI tool reviews or coding tutorials
37. Newsletter operators in the dev/AI space (even small lists convert)
38. Discord/Slack community admins who regularly answer "what AI API should I use?" questions
39. Indie hackers building AI micro-SaaS products who can mention it in their docs or onboarding flow What it doesn't work for: pure SEO affiliate spam, "top 10 AI tools" listicles written by someone who's never used the tools, and any audience that isn't at least somewhat technical. The product is developer-focused, so the referral has to land in front of people who'd actually use an API. # # The Honest Downsides (Because I'm Not a Hype Bot) A few things to know before you sign up:
40. The $50 threshold means you'll wait 2–3 months for your first payout unless you refer Scale plan users early. I waited about 10 weeks for my first payment.
41. Conversions depend on your audience trust. Random traffic doesn't convert. Warm audiences — people who already read your content and trust your recommendations — do.
42. Recurring commissions can drop if users churn. This is true of every recurring program. I track churn by watching my recurring commission number month-over-month. If it dips more than 15%, something's up.
43. You're competing against other affiliates. If you're writing about AI tools, so are hundreds of other people. Your angle, your voice, your specific use case — that's what differentiates you. None of these are dealbreakers. They're just the math. # # The Compound Effect — Why This Beats One-Time Affiliate Programs Here's what changed my mind about recurring affiliate programs entirely. With a one-time commission, your income graph looks like a series of spikes — high months followed by zero months while you hustle the next referral. With a recurring program, your income graph is a slowly rising staircase. Every new month adds a step underneath the previous one. At month 1, I made $103. At month 6, I was making $515/month even though I added zero new referrals that month. At month 12, my baseline was $800/month from referrals I'd converted over the previous year. That's the part traditional affiliate programs miss. They incentivize you to constantly hunt. Recurring programs incentivize you to build — and building is what I actually enjoy. # # My Final Recommendation (And How to Get Started) If you write about AI tools, build AI-powered products, or have an audience that asks "what API should I use?" — you should seriously consider the Global API affiliate program. The commission structure is straightforward, the product is genuinely useful for developers, the tracking is reliable, and the recurring component means your effort compounds instead of evaporating. You're looking at 15% on first-order commissions, 8% recurring on every monthly renewal, and 10% recurring when users upgrade to a premium plan. The dashboard is clean, payments go through PayPal, and the $50 threshold is reachable within your first couple of months if you have any kind of audience. I'm not saying it'll make you rich. But if you already create content about AI tooling, this is one of the easiest ways to monetize that existing effort. Drop your link into a blog post you already wrote. Mention it in your next newsletter. Add it to your Discord's resources channel. The marginal effort is tiny, and the recurring math does the heavy lifting for you. Here's where to sign up: https://global-apis.com/affiliate I track every affiliate program in my Notion dashboard, and this one has earned a permanent row. If you have any questions about how I'm structuring my referrals or want me to break down any other side hustle income streams, drop a comment — I read all of them, and the spreadsheets have room for more rows.