Free and open first
Best AI Agent Platforms in 2026
AI agent platforms provide tools for building and deploying agents, with differences in where they run and how they work with people and information. Compared on deployment model, knowledge grounding, human handoff, multi-agent support, visual agent builder, and voice agent support, the entries offer capabilities to weigh against your intended workflow. Free-plan availability and paid-from pricing are additional points to check. Microsoft Copilot and Vellum are among the options, alongside Camunda and Flowise. Consider how you need to build, deploy, and oversee agents, then compare the listed features with that work.
- 73 apps
- Research read 24 Sept 2026
- How the order is worked out
- 1
Dify
Free plan Open source APIExtensionLinux+4Dify brings workflow building, knowledge retrieval, model connections, and several publishing options into one platform.
- 2
Google Agent Development Kit
Free plan Open source APILinuxMac+3ADK brings agent building, evaluation, and deployment into a framework with broad language and workflow support.
- 3
SmythOS
Free plan Open source AndroidAPIiPhone+5SmythOS brings agent building, integrations, and multiple deployment routes together, with a free plan and paid plans from $39/user/mo.
- 4
Vellum
Free plan Open source AndroidAPIExtension+5Vellum offers a personal assistant with saved context, skills, integrations and approval controls.
- 5
Camunda
Free plan APILinuxMac+3 - 6
Anter
Free plan APISelf-hostedWebAnter focuses on infrastructure for orchestrated agent systems rather than end-user chat.
- 7
Flowise
Free plan APILinuxMac+3Flowise offers visual workflow construction, integrations, and deployment options, but its wind-down is a central consideration.
- 8
Ansa
Free plan APIWebChoose Ansa if you want support or sales agents that can work with business content, use connected tools, and hand conversations to a team.
- 9
CogStorm
Free plan APISelf-hostedWebChoose CogStorm if you need a developer platform spanning multi-agent design, deployment, and governance, with a free SDK and CLI tier.
- 10
CrewAI AMP
Free plan APISelf-hostedWebChoose CrewAI AMP if your team needs several ways to build multi-agent workflows alongside tracing and governance controls.
- 11
Dust
Free plan APIExtensionWebDust combines agent creation, company connectors, collaboration, and scheduled workflows, with a free tier and paid annual-billed plans.
- 12
Falcon Builder
Free plan APISelf-hostedWebFalcon Builder combines workflow creation, AI assistance, and deployment across several interfaces.
- 13
Helios
Free plan APILinuxMac+1Helios combines recurring workflows, connected service APIs, and shared team context, with human approval for proposed shared-file changes.
- 14
Houston
Free plan LinuxMacWeb+1Houston brings connected agents, shared work, and team access controls into one workspace. The free plan is limited to three people and limited usage; Team pricing is billed per user.
- 15
Botpress
Free plan APIWebBotpress combines visual agent building with knowledge sources, workflow reasoning, integrations, and APIs.
- 16
Bottr
Free plan APIWebChoose Bottr if your organization needs configurable agents with a broad catalog, model choices, integrations, and flexible deployment.
- 17
LangSmith
Free plan APILinuxMac+3LangSmith combines agent evaluation with prompt tools and observability, including cost and trajectory tracking.
- 18
LlamaIndex
Free plan APILinuxSelf-hosted+1LlamaIndex combines document parsing, extraction, classification, and retrieval pipelines for teams building document-centered AI workflows.
- 19
Microsoft Copilot
by Microsoft CopilotFree plan WebWindowsMac+2Copilot offers a free entry point and paid Microsoft 365 plans with different levels of AI usage and bundled apps. Compare the plan-specific usage, storage, and family access terms before subscribing.
- 20
MindStudio
Free plan APIExtensionSelf-hosted+1MindStudio combines model access, agent deployment, data integrations and testing tools in one platform.
- 21
MoltOS
Free plan APILinuxSelf-hosted+1Choose MoltOS if you need persistent agent identity, marketplace activity, and cross-platform messaging, with API and self-hosted options.
- 22
ELVES
Free plan MacChoose ELVES if you use Claude Code or OpenAI Codex on macOS and want to manage agent tasks in separate worktrees, inspect their diffs, and decide whether to merge.
- 23
QuickBlox Chat API
Free plan AndroidAPIiPhone+2QuickBlox combines messaging, media sharing, moderation, and multiple hosting options for app developers.
- 24
- 25
Frederick AI
Free plan WebFrederick AI combines app building with agents that can handle browser workflows and background jobs.
#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price