Onyx review

Onyx ranks sixth as the open source option for companies that cannot send documents to a vendor's cloud. Its Business plan costs $20 per user per month on annual billing and includes the chat and search interface, access to all major LLMs, custom agents with MCP or OpenAPI actions, 40+ app connectors, a Slack integration and permission inheritance. Onyx says documents and embeddings can stay inside your own infrastructure and that its code is open source and auditable, which matters for regulated teams. Staff can reach it through a Slackbot, a desktop app or a Chrome extension. The limits are on the enterprise side: SAML and OIDC SSO, on-premise deployments and dedicated support are Enterprise features with custom pricing. The site also says Onyx is joining Zoom, so buyers should ask how that affects the product and licensing before signing a long contract.

Who it is for

Security-minded teams that want to self-host enterprise search or keep documents inside their own infrastructure.

Price

Business $20 per user per month billed annually; Enterprise by quote.

$20 per user / month
Quoted from the vendor pricing page on November 9, 2026.

Key features

• Chat and search UI with access to all major LLMs
• 40+ app connectors with permission inheritance
• Custom AI agents with actions over MCP or OpenAPI
• Slack integration, desktop app and Chrome extension
• On-premise and region-specific deployments on Enterprise

Strengths and weaknesses

• Strength: Open source code that security teams can audit
• Strength: Documents and embeddings can stay in your own infrastructure
• Strength: Published per-user price
• Weakness: SAML and OIDC SSO need the Enterprise plan
• Weakness: Smaller connector catalog than Glean or Copilot
• Weakness: Onyx has announced it is joining Zoom, so the roadmap may change

Key facts

• Business plan: $20 per user per month, annual billing
• Connectors: 40+ app connectors
• Usage: 1M+ queries per week across 1,000+ teams
• Enterprise: On-premise, region-specific deployments, white-labelling

Where it ranks

Onyx is No. 6 in our Best AI Enterprise Search Tools verdict.