Side by side
Ansa vs Vellum
Both stand on ai agent platforms. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan APIWeb
Choose Ansa if you want support or sales agents that can work with business content, use connected tools, and hand conversations to a team. Look elsewhere if the Free plan’s lifetime message allowance or one-tool limit does not fit your needs.
Visit Ansa Free plan Open source AndroidAPIExtension+5
Vellum offers a personal assistant with saved context, skills, integrations and approval controls. Consider its internet requirement and default AI data routing, and note the available Linux access options if you use Linux.
Visit VellumThe facts
| Ansa | Vellum | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Yes |
| Runs on | API, Web | Android, API, Extension, iPhone, Mac, Self-hosted, Web, Windows |
| Lowest paid plan | Starter: $38 a month | Mighty: $30 a month |
| Plans published | 4 | 6 |
| Maker | Not published | Not published |
| Website | ansa.so | vellum.ai |
| On ai agent platforms | #8 of 73 | #4 of 73 |
Ansa: what it does well
- Connects agents to URLs, documents, Q&A, and internal documents.
- Agents can book meetings, process payments, and call external APIs.
- Named integrations include Slack, Shopify, Zendesk, Salesforce, and Notion.
- Conversation handoff can include a summary through Slack or email.
- Tracks confidence scores, resolution rates, and unanswered questions.
What to know first
- Free plan allows 75 messages over its lifetime.
- Free plan includes one agent and one tool per agent.
- Removing Ansa branding requires the Growth or Pro plan.
Vellum: what it does well
- Saves preferences and context across conversations.
- Users can create and manage custom skills.
- Sensitive actions can require approval.
- Cloud assistants run in isolated environments with private storage.
- Optional analytics and crash diagnostics are off by default.
What to know first
- Requires an internet connection to reach an AI provider.
- No shipped Linux desktop client.
- Conversation context goes to Anthropic by default.
- Paid plans start at $30/month.