Small businesses have the opposite problem to large ones: not too many subscriptions, but not enough time to evaluate any of them. So this list is ordered by how much work each tool removes for how little money, and it ends with three complete stacks you can copy.
1. ChatGPT - the most versatile business assistant
Quotes, proposals, customer emails, social posts, spreadsheet formulas, summarising a contract. For a business without specialist staff, it covers the widest range of gaps.
Free tier is genuinely usable, Plus at $20/mo.
2. HubSpot AI - a free CRM with AI
A complete CRM, permanently free, with unlimited contacts and a sales pipeline. For a business tracking customers in a spreadsheet, this is the single highest- value change on the list, and it costs nothing.
Free.
3. Canva AI - marketing visuals without a designer
Social posts, flyers, menus, presentations, all on-brand once you set up a brand kit. Replaces either a freelancer or a lot of your evenings.
Free tier available, Pro at $15/mo.
4. Claude - for documents and customer communication
Better than anything else here at reading a long document and explaining it, and the best writer of the group. Useful for contracts, policies and any customer communication that needs to be right.
5. Notion AI - internal organisation
Worth it once you have enough written down for search to find something. Procedures, supplier details, decisions, all searchable by asking a question.
6. ElevenLabs - voice for customer contact and content
Narration for videos and product explanations without recording, in 32 languages. The free tier covers occasional use.
7. Copy.ai - automated content marketing
Templates for social posts and product descriptions. Solves the blank page rather than the writing, which for most small businesses is the actual blocker.
Free tier available.
8. Grammarly - professional communication
Inline correction wherever you write. For a one-person business sending customer-facing email all day, the free tier alone raises the floor.
Free tier available.
Recommended stacks by budget
Budget: $0
ChatGPT free + HubSpot CRM free + Canva free + Grammarly free.
This covers customer management, marketing visuals, written communication and a general assistant, for nothing. Most small businesses do not need to go further, and should run this for a month before spending anything.
Budget: $50/month
Add ChatGPT Plus ($20) for higher limits and image generation, and Canva Pro ($15) for brand kits and premium assets. Around $35, leaving room for one specialist tool for your specific trade.
Budget: $100/month
Add Claude Pro for documents and customer communication, and either ElevenLabs Creator ($22) if you produce content, or a scheduling and automation tool if your bottleneck is admin rather than marketing.
The honest conclusion
The $0 stack does most of the work. The most common mistake small businesses make with AI is paying for tools before they have used the free versions enough to know what is actually slowing them down.
Run the free stack for a month, notice which tool you hit limits on, and upgrade that one. That sequence saves more money than any discount code.