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Best OpenLLMetry Alternatives in 2026

Updated

20 apps from LLM observability tools ranked against OpenLLMetry on the same published basis.

  1. 1
    Evidently AI Free plan apiLinuxMacself-hostedWeb $80/mo6.7
    OpenLLMetry vs Evidently AI
  2. 2
    W&B Weave Free plan apiLinuxMacself-hostedWeb $60/mo6.7
    OpenLLMetry vs W&B Weave
  3. 3
    OpenLIT Free plan apiLinuxMacself-hostedWeb Free6.6
    OpenLLMetry vs OpenLIT
  4. 4
    Promptfoo Free plan apiLinuxMacself-hostedWeb Free6.6
    OpenLLMetry vs Promptfoo
  5. 5
    Giskard Free plan apiLinuxself-hostedWeb Free6.5
    OpenLLMetry vs Giskard
  6. 6
    LangWatch Free plan apiLinuxself-hostedWeb €29/mo6.5
    OpenLLMetry vs LangWatch
  7. 7
    Opik Free plan apiLinuxself-hostedWeb $19/mo6.5
    OpenLLMetry vs Opik
  8. 8
    Arize AX Free plan apiself-hostedWeb $50/mo6.4
    OpenLLMetry vs Arize AX
  9. 9
    Arize Phoenix Free plan apiself-hostedWeb Free6.4
    OpenLLMetry vs Arize Phoenix
  10. 10
    Braintrust Free plan apiself-hostedWeb $249/mo6.4
    OpenLLMetry vs Braintrust
  11. 11
    Confident AI Free plan apiself-hostedWeb $200/mo6.4
    OpenLLMetry vs Confident AI
  12. 12
    Fiddler AI Free plan apiself-hostedWeb Free6.4
    OpenLLMetry vs Fiddler AI
  13. 13
    Galileo Free plan apiself-hostedWeb $100/mo6.4
    OpenLLMetry vs Galileo
  14. 14
    Helicone Free plan apiself-hostedWeb $79/mo6.4
    OpenLLMetry vs Helicone
  15. 15
    Laminar Free plan apiself-hostedWeb $30/mo6.4
    OpenLLMetry vs Laminar
  16. 16
    Langfuse Free plan apiself-hostedWeb $29/mo6.4
    OpenLLMetry vs Langfuse
  17. 17
    LangSmith Free plan apiself-hostedWeb $39/mo6.4
    OpenLLMetry vs LangSmith
  18. 18
    Maxim AI Free plan apiself-hostedWeb $29/mo6.4
    OpenLLMetry vs Maxim AI
  19. 19
    Parea AI Free plan apiself-hostedWeb $150/mo6.4
    OpenLLMetry vs Parea AI
  20. 20
    Respan (formerly Keywords AI) Free plan apiself-hostedWeb $16.58/mo6.4
    OpenLLMetry vs Respan (formerly Keywords AI)

OpenLLMetry alternatives compared

#AppScoreFree planFromRuns on
1Evidently AI6.7Free plan$80/moAPI, Linux, Mac, self-hosted, Web, Windows
2W&B Weave6.7Free plan$60/moAPI, Linux, Mac, self-hosted, Web, Windows
3OpenLIT6.6Free planFreeAPI, Linux, Mac, self-hosted, Web, Windows
4Promptfoo6.6Free planFreeAPI, Linux, Mac, self-hosted, Web, Windows
5Giskard6.5Free planFreeAPI, Linux, self-hosted, Web
6LangWatch6.5Free plan€29/moAPI, Linux, self-hosted, Web
7Opik6.5Free plan$19/moAPI, Linux, self-hosted, Web
8Arize AX6.4Free plan$50/moAPI, self-hosted, Web
9Arize Phoenix6.4Free planFreeAPI, self-hosted, Web
10Braintrust6.4Free plan$249/moAPI, self-hosted, Web
11Confident AI6.4Free plan$200/moAPI, self-hosted, Web
12Fiddler AI6.4Free planFreeAPI, self-hosted, Web
13Galileo6.4Free plan$100/moAPI, self-hosted, Web
14Helicone6.4Free plan$79/moAPI, self-hosted, Web
15Laminar6.4Free plan$30/moAPI, self-hosted, Web
16Langfuse6.4Free plan$29/moAPI, self-hosted, Web
17LangSmith6.4Free plan$39/moAPI, self-hosted, Web
18Maxim AI6.4Free plan$29/moAPI, self-hosted, Web
19Parea AI6.4Free plan$150/moAPI, self-hosted, Web
20Respan (formerly Keywords AI)6.4Free plan$16.58/moAPI, self-hosted, Web
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Questions about OpenLLMetry alternatives

What is the best alternative to OpenLLMetry?

Evidently AI, number 1 in LLM observability tools with a score of 6.7 out of 10. The others here: W&B Weave, OpenLIT, Promptfoo and 16 more.

What is the best free alternative to OpenLLMetry?

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

How are these alternatives ranked?

Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation.