Onyx vs Open Assistant
Onyx
onyx.appOpen Assistant
open-assistant.orgSide by side
| Figure | Onyx | Open Assistant |
|---|---|---|
| Price from | $20/mo | Free |
| Free plan | Yes | Yes |
| Free trial | Yes | — |
| Open source | Yes | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 3 | 1 |
| Spec score · AI chatbots and assistants | 9.0 (#12) | 7.7 (#50) |
| Free plan | Yes | Yes |
| Integrations | The product advertises more than 50 synced connectors and names Slack, Google Drive, Confluence, Salesforce, GitHub and Jira among supported sources. | Yes |
| Purpose | Onyx connects enterprise knowledge to give humans and agents context for AI answers. | Open Assistant is a self-hosted personal assistant that connects email, calendars, files, notes, and messaging in one conversational interface. |
| Security | The site says documents and embeddings can stay in the customer's infrastructure, data is not used for training, and source permissions are enforced at query time. | The site says credentials are encrypted at rest with Fernet, integrations use OAuth2, and tool invocations are recorded in an audit log. |
| Support | The Business plan includes Community Support; Enterprise lists Dedicated Support and an Enterprise SLA. | The site provides a contact email, [email protected], for help. |
| Web search | Yes | Yes |
Plans
In their own words
Onyx
Onyx connects enterprise knowledge so people and AI agents can use relevant context in answers. It searches indexed sources in parallel and presents documents while enforcing each source's permissions. More than 50 connectors sync connected tools in the background and support hybrid semantic and keyword search. The Business plan lists chat and search, major LLM access, custom agents, MCP/OpenAPI actions, web search, deep research, code interpreter, and image generation. Business costs $20 a month, billed annually at $20 per user per month, for teams of any size, with 40+ app connectors and Community Support. Onyx provides APIs for messages, agents, LLM management, actions, and user authentication. Slack integrations can provide responses and agents; Microsoft Teams and Zendesk are described as coming soon. Deployments can run in a customer's cloud or on bare metal, including on-premise and fully air-gapped environments. The site says documents and embeddings can remain in customer infrastructure, data is not used for training, and permissions are checked at query time. Native Windows, macOS, and Linux apps connect to an existing deployment.
Open Assistant
Open Assistant has no write-up on Specifiction yet; its figures are above.