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Best OpenLLMetry Alternatives in 2026

Updated

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

  1. 1
    Evidently AI Free plan apiLinuxMacself-hostedWeb $80/mo7.9
    OpenLLMetry vs Evidently AI
  2. 2
    W&B Weave Free plan apiLinuxMacself-hostedWeb $60/mo7.9
    OpenLLMetry vs W&B Weave
  3. 3
    Opik Free plan apiLinuxself-hostedWeb $19/mo7.6
    OpenLLMetry vs Opik
  4. 4
    OpenLIT Free plan apiLinuxMacself-hostedWeb Free7.5
    OpenLLMetry vs OpenLIT
  5. 5
    Helicone Free plan apiself-hostedWeb $79/mo7.4
    OpenLLMetry vs Helicone
  6. 6
    Promptfoo Free plan apiLinuxMacself-hostedWeb Free7.4
    OpenLLMetry vs Promptfoo
  7. 7
    Respan (formerly Keywords AI) Free plan apiself-hostedWeb $16.58/mo7.4
    OpenLLMetry vs Respan (formerly Keywords AI)
  8. 8
    Maxim AI Free plan apiself-hostedWeb $29/mo7.3
    OpenLLMetry vs Maxim AI
  9. 9
    LangWatch Free plan apiLinuxself-hostedWeb €29/mo7.2
    OpenLLMetry vs LangWatch
  10. 10
    Fiddler AI Free plan apiself-hostedWeb Free7.1
    OpenLLMetry vs Fiddler AI
  11. 11
    Giskard Free plan apiLinuxself-hostedWeb Free7.1
    OpenLLMetry vs Giskard
  12. 12
    Laminar Free plan apiself-hostedWeb $30/mo7.1
    OpenLLMetry vs Laminar
  13. 13
    Langfuse Free plan apiself-hostedWeb $29/mo7.1
    OpenLLMetry vs Langfuse
  14. 14
    LangSmith Free plan apiself-hostedWeb $39/mo7.1
    OpenLLMetry vs LangSmith
  15. 15
    Arize AX Free plan apiself-hostedWeb $50/mo7.0
    OpenLLMetry vs Arize AX
  16. 16
    Arize Phoenix Free plan apiself-hostedWeb Free7.0
    OpenLLMetry vs Arize Phoenix
  17. 17
    Galileo Free plan apiself-hostedWeb $100/mo7.0
    OpenLLMetry vs Galileo
  18. 18
    HoneyHive Free plan apiself-hostedWeb Free7.0
    OpenLLMetry vs HoneyHive
  19. 19
    Braintrust Free plan apiself-hostedWeb $249/mo6.9
    OpenLLMetry vs Braintrust
  20. 20
    Parea AI Free plan apiself-hostedWeb $150/mo6.9
    OpenLLMetry vs Parea AI

OpenLLMetry alternatives compared

#ToolScoreFree planFromRuns on
1Evidently AI7.9Free plan$80/moAPI, Linux, Mac, self-hosted, Web, Windows
2W&B Weave7.9Free plan$60/moAPI, Linux, Mac, self-hosted, Web, Windows
3Opik7.6Free plan$19/moAPI, Linux, self-hosted, Web
4OpenLIT7.5Free planFreeAPI, Linux, Mac, self-hosted, Web, Windows
5Helicone7.4Free plan$79/moAPI, self-hosted, Web
6Promptfoo7.4Free planFreeAPI, Linux, Mac, self-hosted, Web, Windows
7Respan (formerly Keywords AI)7.4Free plan$16.58/moAPI, self-hosted, Web
8Maxim AI7.3Free plan$29/moAPI, self-hosted, Web
9LangWatch7.2Free plan€29/moAPI, Linux, self-hosted, Web
10Fiddler AI7.1Free planFreeAPI, self-hosted, Web
11Giskard7.1Free planFreeAPI, Linux, self-hosted, Web
12Laminar7.1Free plan$30/moAPI, self-hosted, Web
13Langfuse7.1Free plan$29/moAPI, self-hosted, Web
14LangSmith7.1Free plan$39/moAPI, self-hosted, Web
15Arize AX7.0Free plan$50/moAPI, self-hosted, Web
16Arize Phoenix7.0Free planFreeAPI, self-hosted, Web
17Galileo7.0Free plan$100/moAPI, self-hosted, Web
18HoneyHive7.0Free planFreeAPI, self-hosted, Web
19Braintrust6.9Free plan$249/moAPI, self-hosted, Web
20Parea AI6.9Free plan$150/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 7.9 out of 10. The others here: W&B Weave, Opik, OpenLIT 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 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.