Dify vs Vellum
Dify
dify.aiVellum
vellum.aiSide by side
| Figure | Dify | Vellum |
|---|---|---|
| Price from | $49.17/mo | $30/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | Yes | Yes |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | — |
| iOS | — | Yes |
| Android | — | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 11 | 9 |
| Spec score · AI Agent Platforms | 9.3 (#1) | 8.7 (#9) |
| Spec score · Ai Automation | 9.3 (#1) | 8.7 (#4) |
| Spec score · Tool Calling | 9.4 (#1) | 8.6 (#6) |
| Company legal name | Dify’s terms identify the provider as LangGenius, Inc., a Delaware corporation. | Vellum's privacy notice identifies Vocify, Inc. as the provider of the service. |
| Headquarters | California, United States | United States |
| Integrations | The Marketplace provides model providers, tools, data sources, MCP integrations, and reusable plugins, with support for custom definitions. | OAuth integrations include GitHub, Notion, Linear, Airtable, Spotify, Gmail, Google Calendar, Slack, and other services, while MCP servers provide additional tools. |
| Self-hosting | Community Edition can be deployed with Docker Compose, while Enterprise supports private or VPC deployment and Kubernetes Helm charts. | The runtime can be self-hosted locally or on user infrastructure, including Linux hosts and customer VPC deployments. |
| Support | Sandbox support is community and help documentation, while Professional and Team include priority email support. | Vellum lists support contact as [email protected]. |
| System requirements | The Docker deployment requires at least two CPU cores and 4 GiB RAM; supported setups include macOS 10.14+, Linux with Docker 19.03+, and Windows with WSL2. | The downloads page requires iOS 15 or later, Android 7 or later, macOS 15 Sequoia or later, Chrome 120 or later, and Windows 10 or later. |
| What it does | Dify is an LLM application platform combining visual workflows, RAG pipelines, agents, model and tool support, publishing, and monitoring. | Vellum is a personal AI assistant that can read files, manage calendars, control computers, take calls, perform transactions, and retain personal context. |
Plans
Dify
- CommunityFree
- CommunityFree
- SandboxFree
- SandboxFree
- Professional$59 a month
- Team$159 a month
- Professional$590 a year
- Professional$590 a year
- Team$1,590 a year
- Team$1,590 a year
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
Dify
Dify is an open-source platform for building AI applications with agentic workflows, retrieval pipelines, model management, observability, and tools. Workflow Studio provides a visual canvas for model calls, knowledge retrieval, tools, code, branching, triggers, and human review. Workflows can start from user input, API calls, schedules, webhooks, plugin events, or uploaded payloads. Knowledge Pipeline turns files, online documents, drives, crawlers, and web content into searchable knowledge bases with metadata and citations. Retrieval supports semantic, keyword, hybrid, and reranked methods with metadata filters. Applications can be published as hosted web apps, website embeds, API endpoints, or MCP servers. Dify connects to providers including OpenAI, Anthropic, Google Gemini, and xAI, while its Marketplace lists more than 200 tools. Community Edition is self-hostable with Docker; Enterprise can run in a customer VPC, on-premises, or an air-gapped network. Sandbox and Community are free. Professional costs $590 a year per workspace; Team costs $1,590 a year per workspace.
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.