Pezzo vs Vellum
Pezzo
pezzo.aiVellum
vellum.aiSide by side
| Figure | Pezzo | Vellum |
|---|---|---|
| Price from | — | $30/mo |
| Free plan | — | Yes |
| Free trial | — | — |
| Open source | — | Yes |
| Web | Yes | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 0 | 9 |
| Spec score · Prompt Management Software | 7.3 (#23) | 8.6 (#7) |
| Cloud hosting | Pezzo Cloud is described as a fully managed version hosted and managed by the Pezzo team. | The default deployment provisions an always-on assistant in an encrypted, account-isolated Vellum Cloud workspace with no server administration required. |
| Integrations | Pezzo documents LangChain integration for observability and monitoring, with Node.js and Python examples. | OAuth integrations include GitHub, Notion, Linear, Airtable, Spotify, Gmail, Google Calendar, Slack, and other services, while MCP servers provide additional tools. |
| Product | Pezzo is an open-source toolkit for AI development. | Vellum describes itself as a personal AI assistant that can read files, manage calendars, send email, run code, and control a computer. |
| Self-hosting | The full Pezzo stack can be run locally with Docker Compose; its documented components include a server, console, PostgreSQL, and Redis. | The runtime can be self-hosted locally or on user infrastructure, including Linux hosts and customer VPC deployments. |
| Support | Pezzo’s documentation links to a Discord community and GitHub repository. | Vellum lists support contact as [email protected]. |
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
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.