The Best Agent.ai Alternative in 2026 (After the HubSpot Shift)
Agent.ai is HubSpot co-founder Dharmesh Shah's AI agent marketplace, and in 2026 HubSpot moved its agent vision into its CRM. Here is an honest look and the best independent Agent.ai alternative.
Agent.ai is the AI agent marketplace built by Dharmesh Shah, HubSpot's co-founder and CTO, and in 2026 HubSpot leaned fully into AI agents by launching Agent Hub inside its CRM. That makes it a fair moment to ask a simple question: if you liked Agent.ai because it was an independent, easy place to use and build AI agents, where do you go now? The best independent Agent.ai alternative for most people is Krater, a standalone AI workspace with 350+ models, a full creative suite, and built-in Agents you create yourself, all on one subscription and not tied to any CRM.
Key Takeaways
- Agent.ai is a marketplace and network for AI agents, created by HubSpot's co-founder and CTO, Dharmesh Shah. It grew fast on a large, mostly free user base.
- In 2026 HubSpot went all-in on AI agents and launched Agent Hub and Agent Builder inside its CRM, so Agent.ai's direction is now closely tied to the HubSpot ecosystem.
- Agent.ai is a directory of single-task agents. It is not a continuous workspace, and it does not natively create images, video, voice, or music.
- Krater is independent (not owned by a CRM company), gives you 350+ models with every modality, and has Agents (formerly Personas) so you can build your own AI agents. Pro is $20/month with one shared credit pool and one login.
What is Agent.ai?
Agent.ai is an AI agent platform, part directory and part builder, where you can use ready-made agents for specific tasks or assemble your own. It was created by Dharmesh Shah, the co-founder and CTO of HubSpot, and it grew quickly: by late 2025 it was reported to have millions of users and tens of thousands of people building agents on it, with a large catalogue of public agents free to use. Its appeal was simple: an approachable, largely free place to try AI agents without committing to a big platform.
What changed with HubSpot
In 2026, HubSpot made AI agents the center of its strategy. It launched Agent Hub and Agent Builder inside its CRM, positioning them as the control tower for AI agents that live alongside a company's contacts, deals, and workflows. Because Agent.ai and HubSpot share the same founder, Agent.ai's vision has become closely intertwined with HubSpot's CRM direction.
To be clear about the facts: this is founder-driven convergence, not a publicly confirmed acquisition, and Agent.ai has not announced that it is shutting down. But if the thing you valued about Agent.ai was that it was independent and not part of a sales-and-marketing CRM, that is the shift worth paying attention to, and the reason many people are looking for an independent alternative.
Where Agent.ai leaves a gap for everyday users
1. It is a directory of single-task agents, not a workspace
Agent.ai is organized around discrete agents that each do one job. That is great for one-off tasks, but it is not a continuous place to chat, iterate, create, and keep your work together. You end up hopping between agents rather than staying in one flow.
2. It is tied to a CRM's direction
With HubSpot's agent push happening inside its CRM, the natural gravity of Agent.ai is toward that ecosystem. If you are an individual, creator, or small team that does not want to adopt a CRM, that pull is a reason to look elsewhere.
3. No built-in creative tools
Agent.ai is focused on agent tasks. It does not natively generate images, video, voice, or music, so anything creative still means separate tools and separate logins.
Why Krater is the strongest independent Agent.ai alternative
Krater is The AI SuperApp: one workspace where chat, image, video, voice, music, and documents live together, powered by 350+ models you can switch between at any time. It is independent and not owned by a CRM company, so you get a neutral home for your AI work.
Krater has Agents (formerly Personas)
You do not lose the "build your own agent" part. Krater has Agents (formerly Personas): give any of the 350+ models a role, custom instructions, and tools, then reuse that agent across chat and the whole creative suite. There is also a Krater Agent mode for multi-step tasks. So you keep the agent-building idea that made Agent.ai fun, without being pulled into a CRM.
One subscription, one credit pool
Instead of a directory of separate agents, Krater is one login and one shared credit pool. Pro is $20/month for 1,500 credits across every model and every modality, so the value is breadth and a single continuous workspace, not a low headline price.
Agent.ai vs Krater at a glance
| Feature | Agent.ai | Krater |
|---|---|---|
| Independence | Built by HubSpot's co-founder, agent vision now inside HubSpot's CRM | Independent, not owned by a CRM company |
| What it is | Marketplace of single-task AI agents | Full AI workspace: chat, image, video, voice, docs |
| AI models | Model chosen per agent | 350+ models, switch anytime |
| Build your own agents | Build and list agents in the marketplace | Agents (formerly Personas) plus Krater Agent mode |
| Creative tools | Focused on agent tasks | Image, video, voice, and music built in |
| Pricing | Free to use | Pro at $20/month, one shared credit pool |
Frequently asked questions
What is the best Agent.ai alternative?
For people who want an independent AI workspace rather than a marketplace of single-task agents tied to a CRM, Krater is a strong Agent.ai alternative: 350+ models, built-in Agents (formerly Personas), and image, video, voice, and music in one subscription.
Did HubSpot buy Agent.ai?
Agent.ai was created by Dharmesh Shah, HubSpot's co-founder and CTO. In 2026 HubSpot launched Agent Hub and moved its AI-agent vision into its CRM, which has tightened Agent.ai's ties to the HubSpot ecosystem. It is founder-driven convergence rather than a publicly confirmed acquisition. Krater is independent and not owned by a CRM company.
Does Krater have AI agents?
Yes. Krater has Agents (formerly Personas): you give any of 350+ models a role, custom instructions, and tools, then reuse them across chat and the creative suite. There is also a Krater Agent mode for multi-step tasks.
Is Agent.ai free?
Agent.ai is free to use its public agents. Krater is a paid workspace: Pro is $20 per month for 1,500 credits across 350+ models and every modality, positioned around breadth and workspace value rather than a free directory.
The bottom line
Agent.ai made AI agents approachable, and its momentum is real. But with HubSpot putting agents at the heart of its CRM, Agent.ai's future is increasingly a HubSpot story. If you want a neutral, independent home that keeps the build-your-own-agent idea and adds 350+ models plus image, video, and voice on one predictable subscription, Krater is the stronger alternative. See the full Krater vs Agent.ai comparison, view Krater plans, or start with our calm guide to keeping up with AI without the overwhelm.