Best Inspect AI Alternatives in 2026

20 apps from AI LLM evaluation tools ranked against Inspect AI on the same published basis.

  1. 1Inspect AI vs Vellum
  2. 2Inspect AI vs Weights & Biases
  3. 3Inspect AI vs Evidently AI
  4. 4Inspect AI vs Promptfoo
  5. 5Inspect AI vs DeepEval
  6. 6Inspect AI vs Giskard
  7. 7Inspect AI vs Opik
  8. 8Inspect AI vs Rhesis AI
  9. 9Inspect AI vs Confident AI
  10. 10Inspect AI vs Galileo
  11. 11Inspect AI vs Langfuse
  12. 12Inspect AI vs LangWatch
  13. 13Inspect AI vs Maxim AI
  14. 14Inspect AI vs Braintrust
  15. 15Inspect AI vs LangSmith
  16. 16Inspect AI vs NVIDIA NeMo Evaluator
  17. 17Inspect AI vs Arize Phoenix
  18. 18Inspect AI vs LM Evaluation Harness
  19. 19Inspect AI vs RAGChecker
  20. 21Inspect AI vs OpenAI Evals

Inspect AI alternatives compared

#AppScoreFree planFromRuns on
1Vellum7.4Free plan$30/moAndroid, Browser, iOS, Mac, self-hosted, Web, Windows
2Weights & Biases7.4Free plan$60/moAPI, iOS, Linux, Mac, self-hosted, Web, Windows
3Evidently AI7.3Free plan$80/moAPI, Linux, Mac, self-hosted, Web, Windows
4Promptfoo7.2Free planFreeAPI, Linux, Mac, self-hosted, Web, Windows
5DeepEval7.1Free planFreeLinux, Mac, self-hosted, Windows
6Giskard7.0Free planFreeAPI, Linux, self-hosted, Web
7Opik7.0Free plan$19/moAPI, Linux, self-hosted, Web
8Rhesis AI7.0Free planFreeAPI, Linux, self-hosted, Web
9Confident AI6.9Free plan$200/moAPI, self-hosted, Web
10Galileo6.9Free plan$100/moAPI, self-hosted, Web
11Langfuse6.9Free plan$29/moAPI, self-hosted, Web
12LangWatch6.9Free plan€29/moAPI, Linux, self-hosted, Web
13Maxim AI6.9Free plan$29/moAPI, self-hosted, Web
14Braintrust6.8Free plan$249/moAPI, self-hosted, Web
15LangSmith6.8Free plan$39/moAPI, self-hosted, Web
16NVIDIA NeMo Evaluator6.8Free planFreeAPI, Linux, self-hosted
17Arize Phoenix6.7Free planFreeAPI, self-hosted, Web
18LM Evaluation Harness6.7Free planFreeAPI, Linux, self-hosted
19RAGChecker6.6Free planFreeself-hosted
21OpenAI Evals6.4No—API, self-hosted, Web
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Questions about Inspect AI alternatives

What is the best alternative to Inspect AI?

Vellum, number 1 in AI LLM evaluation tools with a score of 7.4 out of 10. The others here: Weights & Biases, Evidently AI, Promptfoo and 16 more.

What is the best free alternative to Inspect AI?

Vellum is the best-ranked alternative with a free plan. 19 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: documentation depth, a free tier and the platforms it runs on.