Best HarmBench Alternatives in 2026
Updated
20 tools from LLM evaluation tools ranked against HarmBench on the same published basis.
- 1HarmBench vs Promptfoo
- 2HarmBench vs DeepEval
- 3HarmBench vs Maxim AI
- 4HarmBench vs Giskard
- 5HarmBench vs Braintrust
- 6HarmBench vs Galileo
- 7HarmBench vs Parea AI
- 8HarmBench vs Confident AI
- 9HarmBench vs LiveBench
- 10HarmBench vs Ragas
- 11HarmBench vs Whisper
- 12HarmBench vs garak
- 13HarmBench vs HELM
- 14HarmBench vs SWE-bench
- 15HarmBench vs Arena (formerly Chatbot Arena)
- 16HarmBench vs Inspect AI
- 17HarmBench vs OpenCompass
- 18HarmBench vs Parler-TTS
- 19HarmBench vs PyRIT
- 21HarmBench vs AgentBench
HarmBench alternatives compared
| # | Tool | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Promptfoo | 7.6 | Free plan | Free | API, Linux, Mac, self-hosted, Web, Windows |
| 2 | DeepEval | 7.4 | Free plan | Free | Linux, Mac, self-hosted, Windows |
| 3 | Maxim AI | 7.4 | Free plan | $29/mo | API, self-hosted, Web |
| 4 | Giskard | 7.2 | Free plan | Free | API, Linux, self-hosted, Web |
| 5 | Braintrust | 7.1 | Free plan | $249/mo | API, self-hosted, Web |
| 6 | Galileo | 7.1 | Free plan | $100/mo | API, self-hosted, Web |
| 7 | Parea AI | 7.1 | Free plan | $150/mo | API, self-hosted, Web |
| 8 | Confident AI | 7.0 | Free plan | $200/mo | API, self-hosted, Web |
| 9 | LiveBench | 6.9 | No | — | Linux, Mac, Web, Windows |
| 10 | Ragas | 6.5 | No | — | API, Linux, self-hosted |
| 11 | Whisper | 6.3 | No | — | Windows, Mac, Linux |
| 12 | garak | 6.2 | No | — | Windows, Mac, Linux |
| 13 | HELM | 5.9 | No | — | Web |
| 14 | SWE-bench | 5.9 | No | — | Web, Mac, Linux |
| 15 | Arena (formerly Chatbot Arena) | 5.8 | No | — | Web |
| 16 | Inspect AI | 5.8 | Free plan | Free | API, Browser |
| 17 | OpenCompass | 5.8 | No | — | — |
| 18 | Parler-TTS | 5.8 | No | — | — |
| 19 | PyRIT | 5.8 | No | — | Web |
| 21 | AgentBench | 5.6 | No | — | Linux |
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Questions about HarmBench alternatives
What is the best alternative to HarmBench?
Promptfoo, number 1 in LLM evaluation tools with a score of 7.6 out of 10. The others here: DeepEval, Maxim AI, Giskard and 16 more.
What is the best free alternative to HarmBench?
Promptfoo is the best-ranked alternative with a free plan. 9 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.