Free vs paid APIs? 🤔 · AI Automation Society

Free vs paid APIs? 🤔

Hey everyone! 👋 Quick question that's been confusing me — and I'm sure I'm not the only one...

When do you actually have to PAY for an API — and when don't you? 💸

Here's what got me confused: LLM APIs like Claude or OpenAI are paid, but something like the Telegram API is completely free. Why?!

After digging into it, here's how I now think about it 👇

💸 You PAY when the API is doing something computationally heavy just for you — like running a massive AI model to process your text. That's why LLMs charge per token.

✅ You DON'T pay when you're just plugging into an existing platform's infrastructure — like Telegram, Google Calendar or Notion. They already run those servers for their users. You're just hooking in.

🧠 The rule I use now: is this API doing something expensive specifically for my request — or just giving me access to something that already exists?

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⚡ To make it concrete, here are some real automations I'm thinking about building for small businesses and professionals:

🏛️ Law firm — AI agent that reads client emails, spots the legal issue, drafts a first reply.

→ Paid: Claude API | Free: Gmail + Google Calendar

📊 Accountant — bot that receives invoices on WhatsApp, reads the data, logs it into a spreadsheet automatically.

→ Paid: vision/OCR model | Free: WhatsApp Business + Google Sheets

🏠 Real estate — 24/7 Telegram agent answering buyer questions and booking viewings.

→ Paid: Claude or OpenAI | Free: Telegram + Calendly

🛒 E-commerce — automated support handling returns and order status with zero human involvement.

→ Paid: LLM API | Free: Shopify + Gmail webhooks

🎯 Marketing agency — agent that turns a client brief into copy, social posts and email sequences.

→ Paid: Claude API | Free: Notion + Google Docs

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📊 For context — LLM API costs for these automations usually land between €5–30/month per client. Totally manageable once you factor it into your pricing.

Would love to hear from people with more experience 🙏

— How do you handle API costs with clients? Absorb them or pass them on?

— Any tricks to keep costs predictable at scale?

Thanks! 🙌

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