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Onyx AI Review

Depends

Should I use Onyx AI?

The open-source AI enterprise search platform that helps teams find information across all company data. - onyx.app

· 1 month ago

Buy it if your team is docs-heavy, has an engineer to self-host, patch CVEs, and wants Glean-class search free. Skip it if you are small or can't staff the security patch treadmill — built-in Notion/Slack search is enough.

Confidence

Medium. Based on ~30 public sources. Several unrelated 'Onyx' companies (Onyx Security, onyx.dev, Onyx AI Studio) were excluded from findings.

Ratings

  • Value for money
  • Ease of use
  • Feature depth
  • Support qualityNo support evidence in reviewed sources
  • Security posture

Pricing

$0

Community

ModelNot disclosed
Monthly feesNot disclosed
HardwareNot disclosed
Free tierYes
Managed cloud$20/user/mo

Best for

  • Docs-heavy scaling teams
  • Self-hosting engineers wanting private AI search
  • Orgs wanting Glean-class search without Glean pricing
  • Open-source shops

Not for

  • Small teams — Notion or Slack search suffices
  • Teams with no engineer to run and patch it
  • Buyers wanting zero-admin turnkey SaaS
  • Anyone connecting sensitive data before fixing the OAuth CVE

Gotchas - check before you buy

high

Open-source self-host: upgrades and security patching are on you — CVE history shows why that matters

medium

Cloud tier bills per user — company-wide rollout scales fast; self-host is free but you run it

low

Crowded name space: Onyx Security, Onyx database, Onyx AI Studio are unrelated companies

Pros and cons

Pros

  • Free open-source self-host tier
  • ~31,400 GitHub stars — large active community
  • One AI search across company apps and docs
  • Managed cloud option at $20/user
  • Real enterprise users — Ramp case study claims 30x ROI

Cons

  • Critical OAuth token exposure CVE on the platform
  • Two separate auth-bypass CVEs in 2026
  • Self-hosting means you own patching and ops
  • Thin verified review footprint on G2 (0 reviews, one listing)

Sources & method

- 15 sources - Multiple 2026 CVEs including critical OAuth token exposure; don't conflate with unrelated vendor Onyx Security.

official x3review x8security x3news x1
  • CVE-2026-71424 — Critical OAuth token exposure, Information disclosure via exposed OAuth tokens on the Onyx AI platform.
  • CVE-2026-63178 — Auth bypass, Authentication bypass vulnerability in the Onyx AI platform.
  • CVE-2026-42276 — Auth bypass, Authorization bypass vulnerability on the platform.
  • CVE-2026-42277 — Medium severity, Medium-severity vulnerability in the Onyx AI platform.

Key stats

  • Value for money: 5/5

    Rating

  • $0

    Starting price

  • 15

    Sources

  • Analyzed

  • Value for money: 5/5. Free self-host; $20/user managed cloud
  • Ease of use: 4/5. 10/10 user rating, but self-host needs ops
  • Feature depth: 4/5. RAG chat, connectors, web access per reviews
  • Support quality. No support evidence in reviewed sources
  • Security posture: 2/5. Four 2026 CVEs, one critical token exposure
  • 10/10 Ease of use (SoftwareFinder) User-rated ease of use
  • $0 Starting price Open-source self-host
  • Yes Free tier Community edition
  • $10M Funding Raised March 2025

Pricing

Community

$0

  • Open-source self-host
  • You manage infra and security

Managed cloud

$20/user/mo

  • Hosted cloud tier
  • Per-user billing

Security

Multiple 2026 CVEs including critical OAuth token exposure; don't conflate with unrelated vendor Onyx Security.

  • CVE-2026-71424 — Critical OAuth token exposureInformation disclosure via exposed OAuth tokens on the Onyx AI platform.11
  • CVE-2026-63178 — Auth bypassAuthentication bypass vulnerability in the Onyx AI platform.12
  • CVE-2026-42276 — Auth bypassAuthorization bypass vulnerability on the platform.13
  • CVE-2026-42277 — Medium severityMedium-severity vulnerability in the Onyx AI platform.

What users say

Self-hosters on Reddit praise it as a private team ChatGPT with RAG and web access; SoftwareFinder users rate ease of use 10/10.

“a private, open source ChatGPT built for teams”
Reddit, r/selfhosted
“Introducing Onyx - a fully open source chat UI with RAG, web”
Reddit, r/LocalLLaMA

Companies that use it

Full analysis

Based on ~30 public sources. Several unrelated 'Onyx' companies (Onyx Security, onyx.dev, Onyx AI Studio) were excluded from findings.

Powerful open-source Glean alternative — only if you can run and patch it. Four 2026 CVEs included.

Methodology

Based on ~30 public sources. Several unrelated 'Onyx' companies (Onyx Security, onyx.dev, Onyx AI Studio) were excluded from findings.

Read how a report is made.

Sources

  1. Onyx AI official siteonyx.app
    official
  2. Onyx AI Pricingonyx.app
    official
  3. Onyx AI Review 2026: Open-Source Search Tested — Teamazingteamazing.com
    review
  4. Top Onyx AI alternatives for enterprise knowledge search — Dustdust.tt
    review
  5. Introducing Onyx — r/selfhostedreddit.com
    review
  6. Introducing Onyx — r/LocalLLaMAreddit.com
    review
  7. Onyx AI: Pricing, Demo & Features — SoftwareFindersoftwarefinder.com
    review
  8. Onyx AI Reviews — SoftwareFindersoftwarefinder.com
    review
  9. Onyx AI Reviews and Pricing — f6sf6s.com
    review
  10. Ramp case studyonyx.app
    official
  11. CVE-2026-71424 OAuth token exposurethehackerwire.com
    security
  12. CVE-2026-63178 auth bypasssentinelone.com
    security
  13. CVE-2026-42276 auth bypasssentinelone.com
    security
  14. Onyx raises $10Mprospeo.io
    news
  15. Top 10 Onyx AI Alternatives — G2g2.com
    review

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