Best AI Agent Builders of 2026
Nine platforms for building AI agents that take action in your apps, ranked on published prices, free tiers, integrations, code options and self hosting.
By , research by the BestBots team · Updated Oct 18, 2026
Fact checked against each company's published pricing, documentation and verified user ratings. How we score
Zapier is the best AI agent builder for most teams in October 2026: it connects to 9,000+ apps, includes Agents on its free plan and needs no code. Pick n8n if you are technical and want self hosting or the lowest cost at volume, and Make if you want the most automation per dollar at $16 a month.
Our top picks
An AI agent builder lets you give a model a goal, a set of tools and some knowledge, then let it decide what to do in your apps. The products below come at that from three directions: automation platforms that added agents (Zapier, Make, n8n), agent first tools (Lindy, Gumloop, Relevance AI, Stack AI) and conversation platforms for customer facing agents (Botpress, Voiceflow). We ranked them on published facts: price, free tier, integrations, model choice, code options, self hosting, security and public reviews.
How to choose
Start with who will build and maintain the agent, because that decides more than any feature list.
- No technical staff. Choose Zapier or Make. Both have prompt based builders, thousands of ready made app connections and support on paid plans. Zapier is easier, Make is cheaper.
- A developer or technical ops lead. Choose n8n. Per execution billing, JavaScript and Python steps and self hosting give you control that cloud only tools cannot.
- You want an assistant, not a workflow. Choose Lindy. It comes with skills for email, meetings, scheduling and CRM updates, so you configure rather than build.
- A whole team will build agents. Choose Gumloop. Unlimited seats on a $37 plan is unusual in this category.
- The agent talks to customers. Choose Botpress for chat or Voiceflow for chat plus phone.
- Enterprise sales or regulated data. Shortlist Relevance AI for sales agents and Stack AI for on premises deployment, then get quotes.
Then check three practical things before you commit: whether the apps you use most have native connectors, how the vendor bills (tasks, credits, executions or conversations), and what happens when you hit the limit mid month. Zapier switches you to pay per task billing at a higher rate, Gumloop stops your agents unless pay as you go is on, and Make sells extra credits in bundles.
Our picks, in detail
- Starting price
- $29.99 per month billed monthly
- Free tier
- 100 tasks and 400 agent activities per month
- Integrations count
- 9,000+ apps
- Self host
- No, cloud only
Zapier connects to 9,000+ apps, more than any other builder here, and its free plan already includes Agents with 400 activities a month. Zapier Copilot drafts an agent from a plain English prompt, and the platform lists SOC 2 Type II. If your team already lives in Gmail, Slack and a CRM, this is the shortest path from idea to an agent that actually does the work.
Pros
- 9,000+ app integrations, the largest catalog in this category
- Free plan includes Agents with 400 activities a month
- Zapier Copilot builds agents from a plain English prompt
- SOC 2 Type II and SOC 3 listed on its comparison page
Cons
- Per task billing gets expensive for high volume workflows
- Agents are a separate meter on top of your Zap plan
- No self hosting option
- Trustpilot score of 1.3 from 324 reviews, mostly billing and renewal complaints
Skip it if you run high volume workflows; 10,000 tasks costs $193.50 a month billed monthly, and Agents bill on a separate meter.
- Starting price
- €24 per month billed monthly (about $27)
- Free tier
- Self hosted Community Edition free; 14 day cloud trial with 1,000 executions
- Integrations count
- 500+ built in integrations plus any HTTP API
- Self host
- Yes, Docker, on premises or air gapped
n8n's Community Edition is free to self host, and its cloud plans bill per workflow execution with unlimited steps, so a 12 step agent costs the same as a 2 step one. Starter is about $27 (€24) a month billed monthly for 2,500 executions. You can write JavaScript or Python, swap cloud or local models, and run fully air gapped.
Pros
- Free self hosted edition with full source on GitHub (207,000+ stars)
- Bills per execution with unlimited steps, so long agent chains cost the same as short ones
- Unlimited users and workflows on every plan
- Swap cloud or local models, multi agent and RAG support
Cons
- Steeper learning curve than Zapier or Make
- Business plan jumps to €667 per month billed annually (about $750) and is self hosted only
- Self hosting means you own uptime, updates and security
- Fewer native integrations than Zapier
- Prices are listed in euros only, so the USD cost moves with the exchange rate
Skip it if nobody on your team is comfortable with APIs, JSON and debugging a failed run.
- Starting price
- $16 per month billed monthly
- Free tier
- 1,000 credits per month
- Integrations count
- 3,500+ apps
- Self host
- No, cloud only
Make's Core plan is $16 a month billed monthly for 10,000 credits, and AI Agents are available on every plan, including Free. The visual canvas has a Reasoning panel that shows each agent decision step by step, and Make lists 3,500+ apps plus SOC 2 Type II and ISO 27001.
Pros
- AI Agents available on all plans, including Free
- 10,000 credits for $16 a month, far more volume per dollar than Zapier
- Reasoning panel shows each agent decision step by step
- SOC 2 Type II and ISO 27001 listed
Cons
- Visual canvas takes longer to learn than Zapier
- AI Provider actions can use more than 1 credit per step
- No self hosting
- Trustpilot 2.7 from 172 reviews
Skip it if you want the gentlest learning curve; Zapier's linear editor is quicker for first time builders.
- Starting price
- $49.99 per month
- Free tier
- 7 day trial with $50 in credits
- Integrations count
- 1,500+ tools plus MCP servers
- Self host
- No
Lindy behaves more like an AI teammate than a workflow tool: it triages email, takes meeting notes on Zoom and Teams, schedules and updates the CRM, with 1,500+ integrations. It starts at $49.99 a month for 5,000 credits, with a 7 day trial and $50 in credits, and it lists SOC 2 Type II and HIPAA.
Pros
- Ready made skills for email triage, meeting notes, scheduling and CRM updates
- 1,500+ integrations plus MCP and browser automation
- SOC 2 Type II, GDPR, HIPAA and PIPEDA listed
- Editable plain text memory about your team
Cons
- Credit usage per task is hard to forecast before you run it
- No free plan after the 7 day trial
- Trustpilot 1.7 from 40 reviews
Skip it if you need predictable costs; credit use per task is hard to forecast before you run it.
- Starting price
- $37 per month
- Free tier
- 14 day trial only
- Integrations count
- 400+ connectors listed on the homepage, plus custom MCP servers
- Self host
- No; VPC on Enterprise
Gumloop's Pro plan is $37 a month and includes unlimited seats, unlimited agents and 20,000 credits, priced at $0.005 each. It offers 35+ models with bring your own key support and a shared credit pool, which makes it the cheapest way to put a whole marketing or ops team on one agent platform.
Pros
- Unlimited seats, agents and teams on the $37 plan
- 35+ models with model fallback and bring your own key
- Agents reachable in Slack, Microsoft Teams, email, hosted pages and API
- Clear credit math: $0.005 per credit, published per chat cost breakdown
- SOC 2 Type II listed on the homepage
Cons
- No permanent free plan, only a 14 day trial
- 8% orchestration fee on top of model costs, 16% with your own keys
- Agents stop at the credit cap unless overage is switched on
- Shared credentials, Company Brain and SSO are Enterprise only
- No G2, Capterra or Trustpilot listing with 10+ reviews found (Product Hunt 5.0 from 9)
Skip it if you want a permanent free plan; Gumloop offers a 14 day trial only.
- Starting price
- $150 per month billed annually
- Free tier
- 100 conversations a month, 3 agents, 3 seats
- Integrations count
- 50+ Hub integrations
- Self host
- No for the current cloud platform; legacy v12 only
Botpress is built for agents that talk to customers on web chat, WhatsApp, Messenger and Slack. The free plan covers 100 conversations a month, Plus is $150 a month billed annually for 250 conversations, and paid plans include unlimited agents. G2 shows 4.5 from 514 reviews.
Pros
- Free tier with 100 conversations
- Unlimited agents on paid plans
- Per conversation rate drops to $0.50 on Team
- 4.5 on G2 from 514 reviews
Cons
- Paid plans shown only with annual billing
- Conversation packs auto add at 95% of quota and cannot be disabled
- You build and maintain the support logic
- Voice channel only on Enterprise
Skip it if your agent works behind the scenes in your apps rather than in a chat window.
- Starting price
- Quote only
- Free tier
- Free plan with a one time credit grant
- Integrations count
- About 25 named (Salesforce, Zendesk, Genesys and more)
- Self host
- No
Voiceflow deploys one agent across web, WhatsApp, SMS and phone calls and connects to contact center software such as Genesys and to phone providers Twilio, Vonage and Telnyx. It reports 3,000+ customers and 10,000+ live agents, and agencies get multi client workspaces and white labeling.
Pros
- Voice and chat from one agent: web, WhatsApp, SMS and phone
- 3,000+ customers and 10,000+ live agents reported
- Phone via Voiceflow numbers, Twilio, Vonage or Telnyx
- SOC 2, ISO 27001, GDPR and HIPAA listed; no training on customer data
- Trustpilot 4.1 from 15 reviews
Cons
- No published prices on any paid plan
- Built for customer conversations, not back office automation
- Fewer general app integrations than Zapier or Make
- Credits run out mid month unless auto top up is set
Skip it if you need a public price; Voiceflow publishes no dollar amounts.
- Starting price
- $29 per month
- Free tier
- None (Free plan retired)
- Integrations count
- 2,000+ apps and 1,000+ triggers
- Self host
- No
Relevance AI is built around an AI workforce of specialist agents, including a BDR agent and calling and meeting agents, with 1,000+ integrations and SOC 2 Type II. It publishes an average cost of $0.09 per task across the 1.24 million tasks its customers run each month.
Pros
- Specialist agent templates such as a BDR, meeting prep and post call agent
- Workforces chain agents with AI handoffs or fixed next steps
- Vendor Credits pass model costs through at wholesale with no markup, and you can bring your own keys
- SOC 2 Type II and GDPR, with SSO, RBAC, audit logs and PII masking on Enterprise
Cons
- Two meters to track: Actions and Vendor Credits
- Extra Actions cost $80 per 1,000, far above the plan rate
- Calling and meeting agents start at $349 a month on Team
- Public pricing page shows only Enterprise, and too few public reviews to rate (2 on Trustpilot)
Skip it if you are a small business; only an Enterprise plan is listed and pricing is quote only.
- Starting price
- Quote only
- Free tier
- 500 runs per month, 1 seat
- Integrations count
- 500+ enterprise integrations
- Self host
- Yes, on premises or VPC on Enterprise
Stack AI offers on premises and VPC deployment with HIPAA, SOC 2 Type II, ISO 27001 and GDPR, and it is model agnostic. A free plan with 500 runs a month lets you prototype an internal document agent before you talk to sales.
Pros
- On premises and VPC deployment
- HIPAA, SOC 2 Type II, ISO 27001 and GDPR listed
- Free plan with 500 runs to prototype
- Model agnostic
Cons
- No self serve paid plan between Free and Enterprise
- Free plan limited to 1 seat and 2 projects
- Asana acquisition announced October 2026, so the roadmap may change
Skip it if you need a self serve paid plan, or if the Asana acquisition announced in October 2026 makes you wary of roadmap changes.
What it costs
Every builder here uses a different meter, which makes sticker prices misleading. We priced one common workload on each platform's published plans: a 5 step workflow (a trigger plus 4 actions, one of them an AI step) that runs 2,000 times a month.
| Platform | How it bills | Units needed | Plan that covers it | Price billed monthly |
|---|---|---|---|---|
| n8n | Per workflow execution, unlimited steps | 2,000 executions | Starter (2,500 executions) | about $27 (€24), about $23 (€20) billed annually |
| Make | Per credit, most actions 1 credit | About 8,000 to 10,000 credits | Core (10,000 credits) | $16 ($12 billed annually) |
| Zapier | Per task, each completed action | 8,000 tasks | Professional, 10,000 task tier | $193.50 ($129 billed annually) |
| Gumloop | Per credit at provider list price plus 8% | Depends on model use | Pro (20,000 credits, $0.005 each) | $37 |
| Lindy | Per credit | Depends on task complexity | Team (5,000 credits) | $49.99 |
Three things stand out. First, n8n and Make cost roughly a tenth of Zapier for this workload, because Zapier counts every action and n8n counts the whole run once. Second, Zapier's price is about convenience: you pay for the biggest catalog and the easiest editor. Third, credit based agent tools like Gumloop and Lindy pass model costs through, so a workflow that sends long documents to a frontier model can use far more credits than one that classifies short emails. Run a week of real traffic on a trial before you pick a tier.
Zapier Agents add their own meter on top: the free tier includes 400 activities a month and Pro includes 1,500 for $50 a month billed monthly or $400 a year. An activity is any action an agent takes, including a web search, a knowledge lookup or a message sent through the Chrome extension, so a single agent run can use up to 40 activities on Pro. For live per unit rates across every category, see the AI Price Index.
Agent builder vs workflow automation
A workflow is a fixed recipe. When a lead fills in a form, add them to the CRM, then send the welcome email. It is cheap, fast and predictable, and it breaks when the input is messy.
An agent gets a goal ("qualify this lead and book a call if they fit"), tools (CRM search, calendar, email) and knowledge (your pricing page, your FAQ). It reads the input, decides which tools to use and in what order, and can loop until it is done. That flexibility costs more per run and needs guardrails, because an agent can take an action you did not anticipate.
The practical answer for most businesses is both. Use plain workflows for anything rule based and drop an AI step or an agent in where judgment is needed: sorting inbound email, drafting replies, summarizing calls, enriching leads. That is why Zapier, Make and n8n rank high here. They let you mix fixed steps and agent steps in one place, and you only pay agent prices for the parts that need an agent.
Red flags
- A vendor that ranks itself first. Many of the top results for this keyword are vendor blogs, and at least one widely cited list still recommends Relay.app, which shut down in September 2026. Check that a tool is alive and selling before you build on it.
- Credits with no published rate. If you cannot work out what one credit buys, you cannot budget. Gumloop ($0.005 per credit), Make ($1.60 per 1,000 extra on Core) and Lindy ($10 per 1,000 top up) publish the math.
- Hard stops at the limit. Ask what happens on day 20 when you run out. Agents that silently stop are worse than an overage bill.
- No audit trail. You need to see what an agent did and why. Make's Reasoning panel, n8n's execution inspector and Zapier's activity monitoring all cover this.
- Quote only for a small team. Voiceflow and Stack AI are built for larger buyers, and Relevance AI hides its $29 Pro plan in its help center rather than its pricing page. A five person company should not need a sales call to start.
- Review scores without context. Trustpilot scores for automation tools skew low because unhappy subscribers post about renewals and refunds. Read the complaints for patterns (billing, support, reliability) rather than the star average alone.
How we picked
We started from the platforms that rank and get cited for "best AI agent builder", then opened each vendor's pricing page, product pages and security claims in October 2026 and recorded only what was published. Prices are listed exactly as shown, billed monthly where a monthly price exists, with annual prices in the notes. Ratings come from listings we could open, with the review count shown; we skip any site with fewer than 10 reviews.
Each product gets five factor scores (value, features, ease, integrations, trust) graded only from those facts, using the rubric on How we score. The ranked order is editorial: the best fit for the most readers on the verified facts. We dropped Relay.app because it shut down, and we left out pure developer frameworks, which need engineering time this guide does not assume. Vendors cannot pay for placement; see our disclosure.
For head to head detail, read n8n vs Zapier, Make vs Zapier and n8n vs Make, or the full Zapier, n8n and Make reviews.
Frequently asked questions
What is the best AI agent builder in 2026?
For most teams it is Zapier, because it connects to 9,000+ apps, includes Agents on its free plan and needs no code. Technical teams that want low cost at volume or self hosting should pick n8n, and budget conscious small businesses get the most automation per dollar from Make at $16 a month.
Is there a free AI agent builder?
Yes. n8n's Community Edition is free and open source if you host it yourself. On the cloud, Zapier Free includes 400 agent activities a month, Make Free includes 1,000 credits and AI Agents, Botpress Free covers 100 conversations, and Stack AI Free allows 500 runs. Lindy and Gumloop offer trials rather than permanent free plans.
What is the best AI agent builder for beginners?
Zapier. Its editor runs top to bottom, Copilot builds a first draft of an agent from a sentence, and the app you want almost certainly has a ready made connection. Make is the next easiest and much cheaper, but its canvas takes a few hours to learn.
What is the difference between an AI agent builder and an automation tool?
A classic automation runs fixed steps: when a form is submitted, add a row and send an email. An agent gets a goal, tools and knowledge, then decides which steps to take, so it can handle messy input like a free text email. Zapier, Make and n8n now do both, while Lindy, Gumloop and Relevance AI start from the agent side.
Can I build an AI agent without coding?
Yes. Zapier, Make, Lindy, Gumloop, Voiceflow, Botpress and Stack AI all offer visual or prompt based builders. Code helps when an API has no ready made connector; n8n supports JavaScript and Python steps and Zapier supports code steps too.
How much does an AI agent builder cost?
Entry plans run from $0 to about $50 a month: Make Core $16, n8n Starter at about $27 (€24), Zapier Professional $29.99, Gumloop Pro $37, Zapier Agents Pro $50 and Lindy Team $49.99, all billed monthly. Relevance AI Pro is $29 a month per its help center, though its public pricing page shows only Enterprise. Model usage can add to that on credit based tools, and Voiceflow and Stack AI paid plans are quote only.
Which AI agent builder can I self host?
n8n is the main option, with a free Community Edition you can run on Docker, your own servers or an air gapped network. Stack AI offers on premises and VPC deployment on its Enterprise plan, and Gumloop offers a VPC option for Enterprise. Zapier, Make and Lindy are cloud only.
What happened to Relay.app?
Relay.app shut down in 2026. TechCrunch reported that free users lost access on August 15 and paying customers on September 14, and its site now says all accounts and workflows were permanently deleted. If you used it, Zapier and Make are the closest no code replacements.