Vellum vs Yak
Vellum
vellum.aiYak
yak.ioSide by side
| Figure | Vellum | Yak |
|---|---|---|
| Price from | $30/mo | $800/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | Yes | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 9 | 5 |
| Spec score · AI Agent Platforms | 8.7 (#9) | 7.5 (#53) |
| Product | Vellum describes itself as a personal AI assistant that can read files, manage calendars, send email, run code, and control a computer. | Yak is an AI assistant platform that can be embedded in software products and configured to call customer-provided APIs to answer questions and perform actions. |
| Support | Vellum lists support contact as [email protected]. | Yak says its support team will respond to email within one business day. |
Plans
Vellum
- BaseFree
- FreeFree
- Mighty$30 a month
- Mighty$30 a month
- Custom$50 a month
- Super$100 a month
- Super$100 a month
- Ultra$200 a month
- Ultra$200 a month
Yak
- PAYGFree
- Growth$800 a month
- Business$2,100 a month
- Scale$4,500 a month
- EnterprisePriced on request
In their own words
Vellum
Vellum is a personal AI assistant that can read files, manage calendars, send email, run code, and control a computer. It saves preferences and context in its workspace for later conversations, and users can create, install, and manage skills. Listed OAuth services include Discord, GitHub, Google services, HubSpot, Linear, Twitter (X), Asana, Notion, Microsoft Outlook, and Todoist. Vellum says OAuth tokens stay in a credential vault rather than being exposed to the language model. Sensitive actions prompt for approval, and users can set trust rules for standing permissions. By default, conversation context is sent to Anthropic to generate responses; OpenAI, Google, OpenRouter, Fireworks, and local Ollama are listed alternatives. An internet connection is required. Vellum Cloud runs assistants in isolated environments with private storage and 24/7 availability. The Free plan includes first tasks and pay-as-you-go credits. Mighty costs $30 a month, Super $100 a month, and Ultra $200 a month. There is no shipped Linux desktop client, but Linux users can use the web app, Chrome extension, or self-host the runtime.