Comparison
| Tool | Price from | Free plan | Category |
|---|---|---|---|
 AgentSky | 0.461 USD | no | AI agents |
 Warp | 20 USD/mo | yes | AI agents |
 Opera Neon | 19.90 USD/mo | no | AI agents |
 Microsoft Foundry | not listed | ? | AI agents |
 Flowise | 35 USD/mo | yes | AI agents |
 Vapi | 29 USD/mo | trial | AI agents |
 Cline | not listed | yes | APIs & models |
Each alternative in short
1. Warp
Open platform for running fleets of coding agents across the software development lifecycle, plus an agentic terminal and CLI for developers and teams.
Yes, there is a free plan. Free plan includes core terminal features, Warp Agent CLI access, limited cloud agents access, and bring-your-own AI inference; additional agent usage is at pay-as-you-go rates. Page also mentions qualified teams getting up to $10k in free factory usage.
2. Opera Neon
Agentic browser from Opera that reads pages, manages tabs and carries out tasks for you, aimed at people doing research and multi-step web work.
No - according to the vendor, it is paid only.
3. Microsoft Foundry
Enterprise platform from Microsoft Azure to build, ground, and govern AI apps and agents with a wide model catalog and centralized security.
The vendor does not state this clearly on the homepage or pricing page.
4. Flowise
Open source visual platform for building AI agents, multi-agent workflows and RAG chatbots, for developers and small to mid-sized teams.
Yes, there is a free plan. Free plan: 2 flows and assistants, 100 predictions per month, 5MB storage, evaluations and metrics, custom embedded chatbot branding, community support.
5. 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.
6. Cline
Open-source AI coding agent for editors, terminal and SDK that plans and executes multi-file code changes with any model.
Yes, there is a free plan. The open source extension is free for individual developers; you pay only for AI inference, either with your own API keys or via the Cline provider.
FAQ
What is the best alternative to AgentSky?
The most popular option in the same category is Warp. See the comparison table above.