Best ARES Alternatives in 2026
Updated
20 tools from AI LLM evaluation tools ranked against ARES on the same published basis.
- 1ARES vs Weights & Biases
- 2ARES vs Evidently AI
- 3ARES vs Vellum
- 4ARES vs Opik
- 5ARES vs Promptfoo
- 6ARES vs Maxim AI
- 7ARES vs DeepEval
- 8ARES vs Giskard
- 9ARES vs LangWatch
- 10ARES vs Rhesis AI
- 11ARES vs Galileo
- 12ARES vs Langfuse
- 13ARES vs Braintrust
- 14ARES vs LangSmith
- 15ARES vs NVIDIA NeMo Evaluator
- 16ARES vs Arize Phoenix
- 17ARES vs Confident AI
- 18ARES vs HoneyHive
- 19ARES vs OpenCompass
- 20ARES vs OpenAI Evals
ARES alternatives compared
| # | Tool | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Weights & Biases | 8.0 | Free plan | $60/mo | API, iOS, Linux, Mac, self-hosted, Web, Windows |
| 2 | Evidently AI | 7.8 | Free plan | $80/mo | API, Linux, Mac, self-hosted, Web, Windows |
| 3 | Vellum | 7.7 | Free plan | $30/mo | Android, Browser, iOS, Mac, self-hosted, Web, Windows |
| 4 | Opik | 7.5 | Free plan | $19/mo | API, Linux, self-hosted, Web |
| 5 | Promptfoo | 7.4 | Free plan | Free | API, Linux, Mac, self-hosted, Web, Windows |
| 6 | Maxim AI | 7.3 | Free plan | $29/mo | API, self-hosted, Web |
| 7 | DeepEval | 7.2 | Free plan | Free | Linux, Mac, self-hosted, Windows |
| 8 | Giskard | 7.1 | Free plan | Free | API, Linux, self-hosted, Web |
| 9 | LangWatch | 7.1 | Free plan | €29/mo | API, Linux, self-hosted, Web |
| 10 | Rhesis AI | 7.1 | Free plan | Free | API, Linux, self-hosted, Web |
| 11 | Galileo | 7.0 | Free plan | $100/mo | API, self-hosted, Web |
| 12 | Langfuse | 7.0 | Free plan | $29/mo | API, self-hosted, Web |
| 13 | Braintrust | 6.9 | Free plan | $249/mo | API, self-hosted, Web |
| 14 | LangSmith | 6.9 | Free plan | $39/mo | API, self-hosted, Web |
| 15 | NVIDIA NeMo Evaluator | 6.9 | Free plan | Free | API, Linux, self-hosted |
| 16 | Arize Phoenix | 6.8 | Free plan | Free | API, self-hosted, Web |
| 17 | Confident AI | 6.8 | Free plan | $200/mo | API, self-hosted, Web |
| 18 | HoneyHive | 6.8 | Free plan | Free | API, self-hosted, Web |
| 19 | OpenCompass | 6.8 | No | — | API, Linux, self-hosted, Windows |
| 20 | OpenAI Evals | 6.7 | No | — | API, self-hosted, Web |
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Questions about ARES alternatives
What is the best alternative to ARES?
Weights & Biases, number 1 in AI LLM evaluation tools with a score of 8.0 out of 10. The others here: Evidently AI, Vellum, Opik and 16 more.
What is the best free alternative to ARES?
Weights & Biases is the best-ranked alternative with a free plan. 18 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.