Cheapest AI Chatbots in 2026: Every Option Sorted by Price

Looking for the cheapest AI assistants? We sorted every option sold on AIOFFER by its official price per month (long plans converted to a monthly cost) so you can compare them fairly.

AI Chatbots sorted by price

#	Service	Cheapest plan	Official per month
1	Monica AI	Monica AI Pro	$9.90
2	Character.AI Plus	Character.AI Plus c.ai+	$9.99
3	Sider AI	Sider AI Basic	$10
4	Mistral Le Chat Pro	Mistral Le Chat Pro Pro	$14.99
5	Poe	Poe Subscription Annual (1 year)	$16.67
6	Google Gemini	Google Gemini AI Pro	$19.99
7	Microsoft Copilot	Microsoft Copilot M365 Premium	$19.99
8	Claude	Claude Pro	$20
9	Grok	Grok SuperGrok	$30

The three cheapest

Monica AI

All-in-one AI assistant for your browser — chat, summarize, translate and write. From $9.90 per month. See Monica AI deals →

Character.AI Plus

Talk to millions of AI characters — faster replies and better memory with c.ai+. From $9.99 per month. See Character.AI Plus deals →

Sider AI

AI sidebar for every website — chat with Claude and Gemini while you browse. From $10 per month. See Sider AI deals →

Cheapest isn't always best value

Compare what you get per dollar: the cheapest plan may have lower limits or fewer features. Start with the mid-tier plan for a month — upgrade only if you keep hitting the limits.

Pay less than the official price

Every service in this list is sold on AIOFFER below the official price, paid with Bitcoin or USDT. Selected plans also appear in our daily deals with up to 80% off. For a ranked list, see the best AI assistants.