AI agent builders tools
AI agent builders let you create assistants that plan and carry out multi-step tasks, such as researching a lead, updating a CRM and drafting an email, using tools and data you connect. They sit between a chat assistant, which only answers, and a fixed workflow, which only follows the steps you drew.
Lindy
AI assistant that works in Slack, email and meetings to handle routine tasks
Relevance AI
Platform for building teams of specialised AI agents for sales and operations
Gumloop
AI agent builder for teams, with model choice and admin controls on AI spend
Microsoft Copilot Studio
Microsoft's low-code tool for building AI agents for Microsoft 365 and websites
Manus
General AI agent that carries out research, slides, websites and other tasks
Dust
Workspace for building and sharing AI agents connected to company data
StackAI
Enterprise no-code platform for building, deploying and governing AI agents
Side by side
| Tool | Free plan | Starting price | Open source | Platforms |
|---|---|---|---|---|
| Lindy | $29.99/user/mo | No | Web, Chrome extension | |
| Relevance AI | See pricing page | No | Web, API | |
| Gumloop | $37/mo | No | Web | |
| Microsoft Copilot Studio | $200/mo | No | Web | |
| Manus | $17/mo (annual) | No | Web, iOS, Android, API | |
| Dust | $24/user/mo (annual) | No | Web, API | |
| StackAI | See pricing page | No | Web, Self-hosted |
How to choose
- 1
How much should the agent decide for itself? Look for approval steps and logs if its actions touch customers or money.
- 2
Which tools and data sources can it use out of the box?
- 3
How is it billed? Most agent builders charge in credits per run or per action, which is harder to predict than a seat price.
- 4
Do you need to build it without code, or will a developer maintain it?
Also worth a look
Tools listed elsewhere that do this job too.
Zapier
No-code tool that connects web apps and runs automated, AI-assisted workflows
Make
Visual no-code tool for building automated workflows and AI agents across apps
n8n
Workflow automation and AI agent builder you can self-host or use in the cloud
Activepieces
Open-source no-code builder for automations and AI agents, cloud or self-hosted
Workato
Enterprise platform for integrations, workflow automation, APIs and AI agents
Jasper
AI platform with agents and brand controls for marketing content
Copy.ai
AI platform for sales and marketing teams to automate go-to-market work
Writer
Enterprise AI platform with agents, playbooks and brand style controls
Notion
Workspace for docs, wikis, databases and projects with built-in AI
Microsoft 365 Copilot
AI assistant built into Word, Excel, PowerPoint, Outlook and Teams for business
Gemini in Google Workspace
Gemini AI inside Gmail, Docs, Sheets, Meet and other Google Workspace apps
ClickUp
Work management app combining tasks, docs, chat and AI in one workspace
Taskade
AI workspace for building apps, agents and automations from prompts
Intercom
Customer service helpdesk with a built-in AI agent, Fin
Zendesk
Customer service software with ticketing, messaging, voice and AI agents
Tidio
Live chat, ticketing and an AI agent (Lyro) for customer service
Chatbase
Builds AI support agents trained on a company's own content
Voiceflow
Platform for building AI customer service agents for chat and voice
Freshdesk
Freshworks help desk with ticketing, a knowledge base and Freddy AI
Questions
What are AI agent builders?
AI agent builders let you create assistants that plan and carry out multi-step tasks, such as researching a lead, updating a CRM and drafting an email, using tools and data you connect. They sit between a chat assistant, which only answers, and a fixed workflow, which only follows the steps you drew.
Which AI agent builders have a free plan?
Of the 7 listed here, 3 have a free plan: Manus, Dust and StackAI. Free plans are limited; each tool's page lists the limits.
Which of these AI agent builders costs least to start?
Of the tools here with a published price, the lowest entry price is Manus's Standard monthly usage (4,000 credits) plan at $17/mo billed annually, as published on its pricing page on 23 September 2026. The cheapest plan is not always the best value: check what each plan includes.