The best AI agents under USD 20 a month in 2026

Siteglade, an autonomous AI agent with its own computer in the cloud, leads this list of AI agents under USD 20 a month. Its Pro plan costs USD 14.99 a month before tax and covers apps, websites, slides, documents, spreadsheets and videos in one subscription.

Twenty dollars a month is where most AI subscriptions start. At that price the difference between agents is not the price itself but how much finished work one subscription delivers.

This list is published by Siteglade. Facts about other products come from their own pages, read on October 27, 2026 and linked under sources.

How this list is ranked

Siteglade lists itself first, on four criteria where it is strong: what one subscription delivers beyond presentations, code and files you can export on every plan, tasks processed in the EU and prices listed openly, with a Free plan to start. After Siteglade, the list is ordered by the price of each tool’s cheapest plan billed monthly, lowest first; tools that bill per year or show prices only after sign-in come last.

The 12 tools at a glance (pricing pages read October 27, 2026)
Entry priceFree planBest for
1. SitegladePro: USD 14.99 a month before taxA Free plan with 1,500 credits a month and 3 projectsone agent for apps, sites, slides, documents and videos
2. Google GeminiGoogle AI Plus: USD 4.99 a monthA free plan with a Google accountpeople who live in Google services and want one subscription for AI, storage and video
3. ChatGPTChatGPT Go: USD 8 a monthA Free plan with limited deep research, uploads and image generationteams that already work in ChatGPT and mostly need research, writing and analysis
4. GitHub CopilotGitHub Copilot Pro: USD 10 a monthA Free plan with limited chat and agent usagedevelopers who want an agent inside their editor and their GitHub workflow
5. Mistral VibeMistral Vibe Pro: USD 14.99 a monthA Free plan with limited messages, web searches and coding sessionspeople who want a European general assistant for chat, search and code
6. AnythingAnything Pro: USD 19 a monthA Free planpeople who want a low entry price for app building
7. FlowithFlowith Pro: USD 19.90 a monthA Starter plan with 300 one-time credits and limited modelscreators who generate a lot of images and clips with many different models
8. ClaudeClaude Pro: USD 20 a monthA Free plan with web search, file creation, Artifacts and Claude Design, Slides and Docslong documents, careful writing and software work where reasoning matters most
9. DevinDevin Pro: USD 20 a monthA Free plan with a light agent quota and unlimited Tab completionssoftware teams that hand coding tickets to an agent inside their own repositories
10. EmergentEmergent Standard: USD 20 a monthA Free plan with 10 credits a monthfounders who want a web and mobile app from one platform
11. ManusManus 4,000-credit plan: USD 20 a monthA Free plan with 300 credits a dayteams that run many tasks in parallel or on a schedule
12. ReplitReplit Core: USD 20 a monthA free starter tierpeople who want to build, run and host code in one cloud editor

1. Siteglade

Siteglade gives one AI agent a whole computer in the cloud. For presentations: Its Pro plan costs USD 14.99 a month before tax and covers apps, websites, slides, documents, spreadsheets and videos in one subscription.

Beyond that, the same subscription covers websites, mobile apps, browser games, documents and spreadsheets. It starts with a Free plan with 1,500 credits a month and 3 projects.

Siteglade is about 17% cheaper than Manus on the comparable plans.

Price basis: Siteglade Pro (USD 14.99) and Plus (USD 34.99) against Manus 4,000-credit plan (USD 20) and 8,000-credit plan (USD 40), monthly list prices in US dollars as shown on each pricing page on October 27, 2026; Siteglade's dollar prices exclude tax. Credits are specific to each product and are not compared.

2. Google Gemini

The plans include Google Flow credits for video with Gemini Omni Flash. Google AI Ultra costs USD 99.99 a month for 5x the usage of AI Pro, or USD 199.99 for 20x.

Google Gemini is on this list of AI agents under USD 20 a month for its research with sources and documents, and its entry price puts it at number 2. Price: Google AI Plus: USD 4.99 a month. Best for people who live in Google services and want one subscription for AI, storage and video.

3. ChatGPT

ChatGPT is OpenAI's AI assistant, with deep research, Codex and ChatGPT Work. Pro adds Dot, an always-on agent, and longer Codex and ChatGPT Work sessions.

ChatGPT lists presentations among its results, and its entry price puts it at number 3. Price: ChatGPT Go: USD 8 a month. Best for teams that already work in ChatGPT and mostly need research, writing and analysis.

4. GitHub Copilot

Agent mode works in VS Code, Visual Studio, JetBrains, Eclipse and Xcode. Agent mode, code review, the cloud agent and the Copilot CLI all draw on GitHub AI Credits.

GitHub Copilot is on this list of AI agents under USD 20 a month for its code, and its entry price puts it at number 4. Price: GitHub Copilot Pro: USD 10 a month. Best for developers who want an agent inside their editor and their GitHub workflow.

5. Mistral Vibe

Mistral Vibe is Mistral AI's assistant and agent for chat, research, coding and everyday tasks. It runs on the web, in a CLI, in the IDE and on iOS and Android.

Mistral Vibe lists presentations among its results, and its entry price puts it at number 5. Price: Mistral Vibe Pro: USD 14.99 a month. Best for people who want a European general assistant for chat, search and code.

6. Anything

Anything is an AI app builder for web and mobile apps, formerly called Create. Its largest listed plan costs USD 199 a month with 220K credits.

Anything is on this list of AI agents under USD 20 a month for its web apps and mobile apps, and its entry price puts it at number 6. Price: Anything Pro: USD 19 a month. Best for people who want a low entry price for app building.

7. Flowith

It gives access to more than 40 AI models from one canvas. Its top plan, Infinite, costs USD 499.90 a month.

Flowith is on this list of AI agents under USD 20 a month for its images and videos, and its entry price puts it at number 7. Price: Flowith Pro: USD 19.90 a month. Best for creators who generate a lot of images and clips with many different models.

8. Claude

Claude is Anthropic's AI assistant for writing, analysis and code, with Claude Code and Research on paid plans. Max includes USD 100 to 200 a month in API credits, according to the pricing page.

Claude lists presentations among its results, and its entry price puts it at number 8. Price: Claude Pro: USD 20 a month. Best for long documents, careful writing and software work where reasoning matters most.

9. Devin

Devin is Cognition's AI software engineer, with cloud agents and a desktop coding app. Its Max plan costs USD 200 a month for much higher quotas.

Devin is on this list of AI agents under USD 20 a month for its code and web apps, and its entry price puts it at number 9. Price: Devin Pro: USD 20 a month. Best for software teams that hand coding tickets to an agent inside their own repositories.

10. Emergent

Emergent is an AI platform that builds web and mobile apps from chat. Its Enterprise plan can deploy apps in your own cloud with a VPC setup.

Emergent is on this list of AI agents under USD 20 a month for its web apps and mobile apps, and its entry price puts it at number 10. Price: Emergent Standard: USD 20 a month. Best for founders who want a web and mobile app from one platform.

11. Manus

Manus is an autonomous AI agent that carries out tasks on its own computer in the cloud. Its largest listed plan costs USD 200 a month for 40,000 credits.

Manus lists presentations among its results, and its entry price puts it at number 11. Price: Manus 4,000-credit plan: USD 20 a month. Best for teams that run many tasks in parallel or on a schedule.

12. Replit

Replit is a cloud development platform whose Agent builds and hosts apps from a description. Pro can invite up to 50 viewers.

Replit is on this list of AI agents under USD 20 a month for its web apps and websites, and its entry price puts it at number 12. Price: Replit Core: USD 20 a month. Best for people who want to build, run and host code in one cloud editor.

What to check before you choose

Four questions decide more than any ranking:

  • Whether the price is for monthly billing or a monthly rate on a yearly plan.
  • Whether tax is included; many US dollar prices are shown before tax.
  • How many tasks the included credits or messages really cover.

Frequently asked questions

What is the cheapest AI agent?

The cheapest paid entry plans in this list start below USD 10 a month, but they mostly cover chat and research. Siteglade Pro costs USD 14.99 a month before tax and covers apps, sites, slides, documents and videos.

Are prices shown with or without tax?

US dollar prices on most pricing pages exclude tax. Siteglade shows US dollar prices before tax and euro prices including VAT.

Is there a free option among the AI agents under USD 20 a month?

Siteglade has a Free plan with 1,500 credits a month and 3 projects. Google Gemini, ChatGPT, GitHub Copilot, Mistral Vibe, Anything, Flowith, Claude, Devin, Emergent, Manus and Replit also offer a free plan or trial.

Sources and product guides

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