Microsoft Copilot vs Onyx
Microsoft Copilot
copilot.microsoft.comOnyx
onyx.appSide by side
| Figure | Microsoft Copilot | Onyx |
|---|---|---|
| Price from | $8.33/mo | $20/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | Yes |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | — | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| API | — | Yes |
| Self-hosted | — | Yes |
| Plans published | 5 | 3 |
| Spec score · AI chatbots and assistants | 9.5 (#2) | 9.0 (#12) |
| File uploads | Yes | Yes |
| Founded | 1975 | G2 lists Onyx AI as serving customers since 2023 and gives 2023 as its founding year. |
| Free plan | Yes | Yes |
| Image generation | Yes | Yes |
| App integrations | Yes | The product advertises more than 50 synced connectors and names Slack, Google Drive, Confluence, Salesforce, GitHub and Jira among supported sources. |
| Team workspace | Yes | Yes |
| Web search | Yes | Yes |
Plans
Microsoft Copilot
- FreeFree
- Microsoft 365 Personal$99.99 a year
- Microsoft 365 Family$129.99 a year
- Microsoft 365 Premium$199.99 a year
- Microsoft 365 Pro$99.99 a month
In their own words
Microsoft Copilot
Microsoft Copilot is an AI assistant available on the web, Windows, macOS, iOS, and Android. It supports web search, file uploads, image generation, app integrations, team workspaces, and AI bot generation. A free plan offers limited access subject to capacity and usage limits. Paid Microsoft 365 plans bundle Copilot with Word, Excel, PowerPoint, Outlook, OneNote, OneDrive, Defender, and Teams. Microsoft 365 Personal costs $99.99 a year for one person, includes 1 TB of cloud storage, and allows sign-in on five devices at once. Family costs $129.99 a year for one to six people and provides up to 6 TB of storage, but AI features are available only to the subscription owner. Premium is $199.99 a year; Pro is $99.99 a month. Paid plans provide increased usage for chat and visual AI assistance, with agentic AI usage limited on Premium and highest on Pro. AI-generated audio is English only.
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.