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Best Onyx Alternatives in 2026

Updated

20 tools from AI chatbots and assistants ranked against Onyx on the same published basis.

  1. 1
    Perplexity Free plan AndroidapiiOSMacWeb $20/mo9.2
    Onyx vs Perplexity
  2. 2
    Claude Free plan AndroidapiextensioniOSLinux 9.2
    Onyx vs Claude
  3. 3
    ChatGPT Free plan AndroidiOSMacWebWin Free9.1
    Onyx vs ChatGPT
  4. 4
    Microsoft Copilot Free plan WebWinMaciOSAndroid $8.33/mo9.0
    Onyx vs Microsoft Copilot
  5. 5
    Gemini Free plan WebWinMaciOSAndroid Free8.8
    Onyx vs Gemini
  6. 6
    Poe Free plan AndroidapiiOSMacWeb Free8.7
    Onyx vs Poe
  7. 7
    LobeChat Free plan AndroidiOSLinuxMacself-hosted $9.90/mo8.7
    Onyx vs LobeChat
  8. 8
    Grok Free plan AndroidapiiOSWeb $30/mo8.5
    Onyx vs Grok
  9. 9
    AnythingLLM Free plan AndroidapiLinuxMacself-hosted 8.4
    Onyx vs AnythingLLM
  10. 10
    Vibe Free plan WebWinMacLinuxiOS $14.99/mo8.3
    Onyx vs Vibe
  11. 11
    Kimi WebWinMaciOSAndroid 8.2
    Onyx vs Kimi
  12. 12
    LibreChat Free plan apiLinuxMacself-hostedWeb Free8.1
    Onyx vs LibreChat
  13. 13
    Big-AGI Free plan LinuxMacself-hostedWebWin $9/mo8.1
    Onyx vs Big-AGI
  14. 14
    Doubao AndroidapiextensioniOSMac 8.0
    Onyx vs Doubao
  15. 15
    Amazon Q Free plan WebAndroid 8.0
    Onyx vs Amazon Q
  16. 16
    Lumo Free plan WebiOSAndroid Free8.0
    Onyx vs Lumo
  17. 17
    Merlin Free plan WebMaciOSAndroid Free8.0
    Onyx vs Merlin
  18. 18
    DeepSeek Free plan AndroidapiiOSMacWeb Free7.9
    Onyx vs DeepSeek
  19. 19
    Quad Chat Free plan AndroidiOSWeb $8/mo7.9
    Onyx vs Quad Chat
  20. 20
    Meta AI Free plan AndroidiOSMacWeb Free7.8
    Onyx vs Meta AI

Onyx alternatives compared

#ToolScoreFree planFromRuns on
1Perplexity9.2Free plan$20/moAndroid, API, iOS, Mac, Web, Windows
2Claude9.2Free planAndroid, API, Browser, iOS, Linux, Mac, Web, Windows
3ChatGPT9.1Free planFreeAndroid, iOS, Mac, Web, Windows
4Microsoft Copilot9.0Free plan$8.33/moWeb, Windows, Mac, iOS, Android
5Gemini8.8Free planFreeWeb, Windows, Mac, iOS, Android
6Poe8.7Free planFreeAndroid, API, iOS, Mac, Web, Windows
7LobeChat8.7Free plan$9.90/moAndroid, iOS, Linux, Mac, self-hosted, Web, Windows
8Grok8.5Free plan$30/moAndroid, API, iOS, Web
9AnythingLLM8.4Free planAndroid, API, Linux, Mac, self-hosted, Web, Windows
10Vibe8.3Free plan$14.99/moWeb, Windows, Mac, Linux, iOS, Android
11Kimi8.2Web, Windows, Mac, iOS, Android
12LibreChat8.1Free planFreeAPI, Linux, Mac, self-hosted, Web, Windows
13Big-AGI8.1Free plan$9/moLinux, Mac, self-hosted, Web, Windows
14Doubao8.0Android, API, Browser, iOS, Mac, Web, Windows
15Amazon Q8.0Free planWeb, Android
16Lumo8.0Free planFreeWeb, iOS, Android
17Merlin8.0Free planFreeWeb, Mac, iOS, Android
18DeepSeek7.9Free planFreeAndroid, API, iOS, Mac, Web, Windows
19Quad Chat7.9Free plan$8/moAndroid, iOS, Web
20Meta AI7.8Free planFreeAndroid, iOS, Mac, Web
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Questions about Onyx alternatives

What is the best alternative to Onyx?

Perplexity, number 1 in AI chatbots and assistants with a score of 9.2 out of 10. The others here: Claude, ChatGPT, Microsoft Copilot and 16 more.

What is the best free alternative to Onyx?

Perplexity is the best-ranked alternative with a free plan. 18 of the 20 alternatives here publish a free plan on their own pricing pages.

How are these alternatives ranked?

Ranked on what each maker publishes, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing.