Best LLM Evaluation Tools in 2026
Updated
29 LLM evaluation tools ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
29ranked
1free plans on this page
8 Oct 2026last checked
1 of the 4 here have a free tier you can use, 0 have open-source code on record, and 0 have full bars: free, open, on most of your devices and documented.
| # | App | Signal | Free tier | Open code | Devices | From | Score |
|---|---|---|---|---|---|---|---|
| 26 | HELMWeb · Self-hosted · API | One bar | — | 1 of 6 | Free | 5.2 | |
| 27 | Parler-TTSNo platforms listed | No signal | — | — | 0 of 6 | — | 5.2 |
| 28 | PyRITWeb | No signal | — | — | 1 of 6 | — | 5.2 |
| 29 | AgentBenchLinux | No signal | — | — | 1 of 6 | — | 5.1 |
Compare all 4 in a table
| # | App | Score | Free plan | From | Free plan | Paid from | Deployment options | Custom metrics |
|---|---|---|---|---|---|---|---|---|
| 26 | HELM | 5.2 | Free plan | Free | — | — | self-hosted | Yes |
| 27 | Parler-TTS | 5.2 | No | — | — | — | self-hosted | Yes |
| 28 | PyRIT | 5.2 | No | — | — | — | both | Yes |
| 29 | AgentBench | 5.1 | No | — | Yes | — | self-hosted | — |
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