Comparison
| Tool | Price from | Free plan | Category |
|---|---|---|---|
 Synthflow | 30000 USD/yr | no | AI agents |
 Gumloop | 37 USD/mo | trial | AI agents |
 Vapi | 29 USD/mo | trial | AI agents |
 CrewAI | not listed | yes | AI agents |
 Relevance AI | not listed | ? | AI agents |
 Manus | 20 USD/mo | ? | AI agents |
 Dust | 24 EUR/mo | trial | AI agents |
 Sistava | 6 USD | ? | AI agents |
 IBM watsonx | not listed | trial | AI agents |
Each alternative in short
1. Gumloop
Multiplayer AI agent builder letting teams create agents with any AI model and integration while IT controls access.
There is a free trial. 14-day free trial of the Pro plan.
2. Vapi
Platform for developers and enterprises to build, test, and deploy conversational voice AI agents for calls.
There is a free trial. No Success Package includes $5 free credits, 2 organizations, 1 included Vapi phone number, 4 concurrent calls, 14 days raw data retention, and community support.
3. CrewAI
Enterprise platform for building, running and governing multi-agent AI workflows, for business teams and engineers.
Yes, there is a free plan. Basic plan: visual editor and AI copilot, GitHub integration, 50 workflow executions per month, 2 automations, tracing, LLM testing and guardrails.
4. Relevance AI
Platform for building and running specialist AI agents for sales, customer success, marketing, HR and operations teams.
The vendor does not state this clearly on the homepage or pricing page.
5. Manus
An AI agent that executes tasks and automates workflows rather than only answering questions, for users who want hands-on help.
The vendor does not state this clearly on the homepage or pricing page.
6. Dust
Connects company knowledge, tools and teams so people and AI agents can build, share and run workflows together.
There is a free trial. Free plan includes 500 credits (lifetime). A free trial is available via 'Try for free'.
7. Sistava
AI workforce platform that sets up AI employees for defined sales, marketing, support, operations and research workflows.
The vendor does not state this clearly on the homepage or pricing page.
8. IBM watsonx
Enterprise AI and automation platform from IBM (watsonx Orchestrate, Bob coding assistant and more) for large businesses modernizing operations.
There is a free trial. Free trial of IBM Bob: 50 Bobcoins for 30 days.
FAQ
What is the best alternative to Synthflow?
The most popular option in the same category is Gumloop. See the comparison table above.