Best AI Agent Builders in 2026
Updated
In short: Houston is ranked #1 of 35 as of 5 October 2026, ahead of Microsoft Copilot and Agentforce Vibes. The best-ranked option with a free plan is Microsoft Copilot. The lowest first paid tier on this page is Microsoft Copilot at $8.33/mo.
Building an agent for connected or recurring work raises questions about what it can access, when it runs and where a person stays in control. Compare app connectors and web browsing with scheduled runs, run limits and included agents; human approvals are another capability to weigh for workflows that need oversight. Houston, Microsoft Copilot and Agentforce Vibes are among the named options, alongside Relevance AI and Wordware. Check free-plan availability and paid-from pricing alongside the feature details. Together, these comparisons help you consider integrations, execution capacity and approval controls for the kind of agent workflow you have in mind.
35 AI agent builders ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
35ranked
15free plans on this page
$8.33/molowest paid tier
5 Oct 2026last checked
Input list AI Agent Builders 25 channels on this page · 70 of 200 spec lines stated by the makers
Ch Tool Free planPaid fromApp connectorsIncluded agentsRun limitScheduled runsHuman approvalsWeb browsing Spec sheet Score
01 Houston Free planYesPaid fromnot statedApp connectors1,000 appsIncluded agentsnot statedRun limitnot statedScheduled runsYesHuman approvalsYesWeb browsingYes 5/8spec lines stated 7.8
02 Microsoft Copilot Free planYesPaid from$9.99/moApp connectorsnot statedIncluded agentsnot statedRun limitnot statedScheduled runsnot statedHuman approvalsnot statedWeb browsingnot stated 2/8spec lines stated 7.8
03 Agentforce Vibes Free planYesPaid fromnot statedApp connectorsnot statedIncluded agentsnot statedRun limitnot statedScheduled runsYesHuman approvalsYesWeb browsingYes 4/8spec lines stated 7.2
04 Automation Anywhere Document Automation Free planNoPaid fromnot statedApp connectorsnot statedIncluded agentsnot statedRun limitnot statedScheduled runsYesHuman approvalsYesWeb browsingnot stated 3/8spec lines stated 7.2
05 SEPIA Free planYesPaid fromnot statedApp connectorsnot statedIncluded agentsnot statedRun limitnot statedScheduled runsnot statedHuman approvalsnot statedWeb browsingnot stated 1/8spec lines stated 7.2
06 UiPath Test Cloud Free planYesPaid from$25/moApp connectorsnot statedIncluded agentsnot statedRun limitnot statedScheduled runsYesHuman approvalsYesWeb browsingYes 5/8spec lines stated 7.2
07 Falcon Builder Free planYesPaid from$29/moApp connectorsnot statedIncluded agentsnot statedRun limit10,000 runs/moScheduled runsYesHuman approvalsYesWeb browsingYes 6/8spec lines stated 7.1
08 Relevance AI Free planYesPaid from$19/moApp connectorsnot statedIncluded agentsnot statedRun limitnot statedScheduled runsnot statedHuman approvalsnot statedWeb browsingnot stated 2/8spec lines stated 7.1
09 Wordware Free planYesPaid fromnot statedApp connectorsnot statedIncluded agentsnot statedRun limitnot statedScheduled runsYesHuman approvalsYesWeb browsingYes 4/8spec lines stated 7.1
10 Workato Agent Studio Free planYesPaid from$75/moApp connectorsnot statedIncluded agentsnot statedRun limitnot statedScheduled runsYesHuman approvalsYesWeb browsingYes 5/8spec lines stated 7.1
11 Dust Free planYesPaid fromnot statedApp connectors20 appsIncluded agentsnot statedRun limitnot statedScheduled runsYesHuman approvalsnot statedWeb browsingYes 4/8spec lines stated 7.0
12 MindStudio Free planYesPaid from$20/moApp connectorsnot statedIncluded agentsnot statedRun limitnot statedScheduled runsYesHuman approvalsYesWeb browsingYes 5/8spec lines stated 6.9
13 StackAI Free planYesPaid fromnot statedApp connectorsnot statedIncluded agentsnot statedRun limitnot statedScheduled runsYesHuman approvalsYesWeb browsingYes 4/8spec lines stated 6.9
14 LangChain Free planYesPaid fromnot statedApp connectorsnot statedIncluded agentsnot statedRun limitnot statedScheduled runsnot statedHuman approvalsnot statedWeb browsingnot stated 1/8spec lines stated 6.8
15 ELVES Free planYesPaid fromnot statedApp connectorsnot statedIncluded agentsnot statedRun limitnot statedScheduled runsnot statedHuman approvalsnot statedWeb browsingnot stated 1/8spec lines stated 6.7
16 Gumloop Free planNoPaid from$37/moApp connectorsnot statedIncluded agentsnot statedRun limitnot statedScheduled runsnot statedHuman approvalsnot statedWeb browsingnot stated 2/8spec lines stated 6.7
17 SmythOS Free planYesPaid fromnot statedApp connectorsnot statedIncluded agentsnot statedRun limitnot statedScheduled runsYesHuman approvalsnot statedWeb browsingYes 3/8spec lines stated 6.7
18 Kopern Free planYesPaid from$79/moApp connectorsnot statedIncluded agents25 agentsRun limitnot statedScheduled runsnot statedHuman approvalsYesWeb browsingYes 5/8spec lines stated 6.6
19 Glean Agent Builder Free plannot statedPaid fromnot statedApp connectorsnot statedIncluded agentsnot statedRun limitnot statedScheduled runsYesHuman approvalsYesWeb browsingYes 3/8spec lines stated 6.4
20 Harmony AI Agent Builder Free plannot statedPaid fromnot statedApp connectorsnot statedIncluded agentsnot statedRun limitnot statedScheduled runsYesHuman approvalsYesWeb browsingnot stated 2/8spec lines stated 6.4
21 Bottr Free planYesPaid fromnot statedApp connectorsnot statedIncluded agentsnot statedRun limitnot statedScheduled runsnot statedHuman approvalsnot statedWeb browsingnot stated 1/8spec lines stated 6.3
22 SabioAI Free plannot statedPaid fromnot statedApp connectorsnot statedIncluded agentsnot statedRun limitnot statedScheduled runsnot statedHuman approvalsnot statedWeb browsingnot stated 0/8spec lines stated 6.3
23 Lindy Free planNoPaid fromnot statedApp connectorsnot statedIncluded agentsnot statedRun limitnot statedScheduled runsnot statedHuman approvalsnot statedWeb browsingnot stated 1/8spec lines stated 6.1
24 Portia Free plannot statedPaid fromnot statedApp connectorsnot statedIncluded agentsnot statedRun limitnot statedScheduled runsnot statedHuman approvalsYesWeb browsingnot stated 1/8spec lines stated 6.1
25 Kore.ai Free plannot statedPaid fromnot statedApp connectorsnot statedIncluded agentsnot statedRun limitnot statedScheduled runsnot statedHuman approvalsnot statedWeb browsingnot stated 0/8spec lines stated 5.9
Compare all 25 in a table
| # | Tool | Score | Free plan | From | Free plan | Paid from | App connectors | Included agents |
|---|---|---|---|---|---|---|---|---|
| 1 | Houston | 7.8 | Free plan | $12/mo | Yes | — | 1,000 apps | — |
| 2 | Microsoft Copilot | 7.8 | Free plan | $8.33/mo | Yes | 9.99 /mo | — | — |
| 3 | Agentforce Vibes | 7.2 | Free plan | $125/mo | Yes | — | — | — |
| 4 | Automation Anywhere Document Automation | 7.2 | Free plan | Free | No | — | — | — |
| 5 | SEPIA | 7.2 | No | — | Yes | — | — | — |
| 6 | UiPath Test Cloud | 7.2 | No | — | Yes | 25 /mo | — | — |
| 7 | Falcon Builder | 7.1 | Free plan | $29/mo | Yes | 29 /mo | — | — |
| 8 | Relevance AI | 7.1 | Free plan | $19/mo | Yes | 19 /mo | — | — |
| 9 | Wordware | 7.1 | Free plan | $29/mo | Yes | — | — | — |
| 10 | Workato Agent Studio | 7.1 | Free plan | $75/mo | Yes | 75 /mo | — | — |
| 11 | Dust | 7.0 | Free plan | €24/mo | Yes | — | 20 apps | — |
| 12 | MindStudio | 6.9 | Free plan | $20/mo | Yes | 20 /mo | — | — |
| 13 | StackAI | 6.9 | Free plan | Free | Yes | — | — | — |
| 14 | LangChain | 6.8 | Free plan | $39/mo | Yes | — | — | — |
| 15 | ELVES | 6.7 | Free plan | Free | Yes | — | — | — |
| 16 | Gumloop | 6.7 | No | $37/mo | No | 37 /mo | — | — |
| 17 | SmythOS | 6.7 | Free plan | $39/mo | Yes | — | — | — |
| 18 | Kopern | 6.6 | Free plan | $79/mo | Yes | 79 /mo | — | 25 agents |
| 19 | Glean Agent Builder | 6.4 | No | — | — | — | — | — |
| 20 | Harmony AI Agent Builder | 6.4 | No | — | — | — | — | — |
| 21 | Bottr | 6.3 | No | — | Yes | — | — | — |
| 22 | SabioAI | 6.3 | No | — | — | — | — | — |
| 23 | Lindy | 6.1 | No | $29.99/mo | No | — | — | — |
| 24 | Portia | 6.1 | No | — | — | — | — | — |
| 25 | Kore.ai | 5.9 | No | — | — | — | — | — |
Is your tool on this list?
Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.
Questions about this list
Which AI agent builder is ranked first on Specifiction?
Houston is ranked #1 of 35 with a score of 7.8. Microsoft Copilot is second and Agentforce Vibes third.
How many of these have a free plan?
15 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Microsoft Copilot has the lowest first paid tier we found: $8.33/mo.
How is this list ranked?
Ranked on what each maker publishes, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing.