Best LLM Evaluation Tools in 2026
Updated
In short: Braintrust is ranked #1 of 29 as of 3 October 2026, ahead of Confident AI and DeepEval. The best-ranked option with a free plan is Confident AI. The lowest first paid tier on this page is Maxim AI at $29/mo.
Assessing prompts and model outputs can involve different evaluation methods and workflows. Compare custom metrics and safety evaluations with LLM-as-a-judge, human review workflows, and prompt versioning. CI/CD integration and deployment options offer ways to consider how the tools align with development workflows. Free-plan availability and paid-from pricing add further comparison points. DeepEval and Galileo begin the entries shown, followed by Maxim AI and Braintrust. Consider which evaluation approaches matter to your work, then weigh the listed workflow connections and options against those needs.
29 LLM evaluation tools ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
| # | App | Score | From | Free plan | Paid from | Deployment options | Custom metrics | LLM-as-a-judge | Safety evaluations | |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Braintrust | 6.4 | $249/mo | Yes | 249 /mo | both | Yes | Yes | Yes | View |
| 2 | Confident AI | 6.4 | $200/mo | Yes | 200 /mo | both | Yes | Yes | Yes | View |
| 3 | DeepEval | 6.4 | Free | Yes | — | both | Yes | Yes | Yes | View |
| 4 | Galileo | 6.4 | $100/mo | Yes | 100 /mo | both | Yes | Yes | Yes | View |
| 5 | Giskard | 6.4 | Free | Yes | — | both | Yes | Yes | Yes | View |
| 6 | Maxim AI | 6.4 | $29/mo | Yes | — | both | Yes | Yes | Yes | View |
| 7 | Parea AI | 6.4 | $150/mo | Yes | — | both | Yes | Yes | Yes | View |
| 8 | Promptfoo | 6.4 | Free | Yes | — | both | Yes | Yes | Yes | View |
| 9 | HELM | 5.4 | — | — | — | self-hosted | Yes | Yes | Yes | View |
| 10 | Inspect AI | 5.4 | — | — | — | self-hosted | Yes | Yes | Yes | View |
| 11 |  OpenCompass | 5.4 | — | Yes | — | self-hosted | Yes | Yes | Yes | View |
| 12 | Parler-TTS | 5.4 | — | — | — | self-hosted | Yes | Yes | — | View |
| 13 | Ragas | 5.4 | — | Yes | — | self-hosted | Yes | Yes | — | View |
| 14 | Whisper | 5.4 | — | Yes | — | both | Yes | Yes | Yes | View |
| 15 | Arena (formerly Chatbot Arena) | 5.3 | — | Yes | — | cloud | — | — | Yes | View |
| 16 |  garak | 5.3 | — | Yes | — | self-hosted | Yes | Yes | Yes | View |
| 17 |  PyRIT | 5.3 | — | — | — | both | Yes | Yes | Yes | View |
| 18 |  TruLens | 5.3 | — | — | — | self-hosted | Yes | Yes | Yes | View |
| 19 |  AgentBench | 5.2 | — | Yes | — | self-hosted | — | — | — | View |
| 20 |  HarmBench | 5.2 | — | Yes | — | self-hosted | — | Yes | Yes | View |
| 21 |  LM Evaluation Harness | 5.2 | — | — | — | self-hosted | Yes | — | Yes | View |
| 22 |  RAGChecker | 5.2 | — | — | — | self-hosted | No | Yes | — | View |
| 23 |  SWE-bench | 5.2 | — | Yes | — | both | — | — | — | View |
| 24 |  ARES | 5.1 | — | — | — | self-hosted | — | Yes | — | View |
| 25 |  CloudSploit | 5.1 | — | — | — | — | — | — | — | View |
Is your app on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which LLM evaluation tool is ranked first on Samsung Mobile US Press?
Braintrust is ranked #1 of 29 with a score of 6.4. Confident AI is second and DeepEval third.
How many of these have a free plan?
8 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Maxim AI has the lowest first paid tier we found: $29/mo.
How is this list ranked?
Ranked mobile-first: a phone app alongside the web or desktop product, a free tier and the depth of its documentation. Paid placements never change a rank.