Haystack
6.4#10 in llm application development frameworksFree planFree planAPISelf-hosted
VisitHaystack vs Vellum
What both publish
| Fact | Haystack | Vellum |
|---|---|---|
| Headquarters | Berlin, Germany | United States |
| Integrations | The integrations directory lists 189 integrations, including model providers, vector databases, monitoring tools, and community-built components. | OAuth integrations include GitHub, Notion, Linear, Airtable, Spotify, Gmail, Google Calendar, Slack, and other services, while MCP servers provide additional tools. |
Haystack plans
- Haystack Open Source FrameworkFree
- Haystack Enterprise PlatformPriced on request
Vellum plans
- BaseFree
- FreeFree
- Mighty$30 a month
- Custom$50 a month
- Super$100 a month
- Ultra$200 a month
Pick Haystack if…
Haystack suits AI developers and engineers building modular, transparent systems for real-world enterprise environments. The open-source framework may fit teams that want to build on their own infrastructure, while the separate Enterprise Platform offers additional development, deployment, and monitoring tools.
Pick Vellum if…
Vellum suits individuals seeking an assistant for files, calendars, email, code, and computer tasks. It is characterized as a personal assistant rather than a team or shared company tool.