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DeepEval vs Evidently AI

Both stand on ai llm evaluation tools. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

DeepEval

Free plan Open source APILinuxMac+3

DeepEval offers a broad toolkit for evaluating AI systems across modalities, metrics, and agent workflows. Its open-source edition is positioned for pre-production testing; enterprise collaboration and deployment options are described separately through Confident AI Evals.

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Evidently AI

Free plan Open source APILinuxMac+3

Evidently AI covers evaluation, tracing, synthetic data and ongoing monitoring across AI and ML workflows. Review plan limits and support levels against the scale and deployment option you need.

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The facts

DeepEvalEvidently AI
Free planYesYes
Open sourceYesYes
Runs onAPI, Linux, Mac, Self-hosted, Web, WindowsAPI, Linux, Mac, Self-hosted, Web, Windows
Lowest paid planStarter: $200 a monthPro: $80 a month
Plans published55
MakerNot publishedNot published
Websitedeepeval.comevidentlyai.com
On ai llm evaluation tools#1 of 30#2 of 30

DeepEval: what it does well

  • Pytest-native evaluations run in CI/CD
  • Lists more than 50 evaluation metrics
  • Evaluates text, images, and audio
  • Supports synthetic test data and persona simulations
  • Integrates with agent frameworks and model providers

What to know first

  • DeepEval OS is limited to pre-production testing
  • Default telemetry is sent to PostHog
  • OS results are kept in local files

Evidently AI: what it does well

  • Open-source framework is licensed under Apache 2.0.
  • Python library provides more than 100 evaluation metrics.
  • Automated checks can run in pipelines with visual reports.
  • Red-team testing targets several named AI risks.
  • Cloud alerts can go to Slack, Discord and email.

What to know first

  • Developer plan is limited to 10,000 rows monthly.
  • Pro costs $80 a month.
  • Enterprise pricing is custom and not listed.

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