Onyx vs Smillee
Onyx
onyx.appSmillee
smillee.comSide by side
| Figure | Onyx | Smillee |
|---|---|---|
| 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 | — |
| Self-hosted | Yes | — |
| Plans published | 3 | 1 |
| Spec score · AI chatbots and assistants | 9.0 (#12) | 7.4 (#60) |
| File uploads | Yes | Yes |
| Free plan | Yes | Yes |
| Image generation | Yes | Image generation is free, has no watermark or paid resolution tier, and requires Google sign-in. |
| Integrations | The product advertises more than 50 synced connectors and names Slack, Google Drive, Confluence, Salesforce, GitHub and Jira among supported sources. | The service offers optional Google authentication and may integrate with third-party services users choose to connect. |
| 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. | Smillee says it uses reasonable security measures but cannot guarantee absolute security. |
| Support | The Business plan includes Community Support; Enterprise lists Dedicated Support and an Enterprise SLA. | The contact page invites questions, bug reports, and feedback through its form and says it aims to respond promptly. |
| Team workspace | Yes | No |
| Web search | Yes | For questions needing current information, Smillee searches the web and lists the pages it used. |
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.