Best AI Agent Evaluation Tools in 2026
Updated
In short: Arklex is ranked #1 of 29 as of 4 October 2026, ahead of Future AGI AI Evaluation SDK and Noveum. The best-ranked option with a free plan is Future AGI AI Evaluation SDK. The lowest first paid tier on this page is Amazon Bedrock Data Automation at $0.01/mo.
When you need to assess AI agents, these tools offer different evaluation and workflow criteria to compare. Look at evaluation methods, tool-call checks, and safety evaluations, then consider trace ingestion and support for the SDK languages your team uses. Dataset limits and regression runs can also shape how you approach repeated checks; free plans and paid-from pricing help frame access and cost. The ranking opens with AgentClash, Future AGI AI Evaluation SDK, and MLflow GenAI Evaluation, followed by Galileo and Noveum. Use the stated criteria to weigh which capabilities align with your evaluation work and the kinds of agent behavior you need to examine.
29 AI agent evaluation tools ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
AI Agent Evaluation Tools, one module each. A lit port is something its maker publishes; 18 of the 25 on this page have a public API.
- 01 Arklex API yesOSS not on recordFREE yesDOCS 7.4Free
- 02 Future AGI AI Evaluation SDK API yesOSS not on recordFREE yesDOCS 7.4$250/mo
- 03 Noveum API yesOSS not on recordFREE yesDOCS 7.4$69/mo
- 04 AgentClash API yesOSS not on recordFREE yesDOCS 7.3$49/mo
- 05 Braintrust API yesOSS not on recordFREE yesDOCS 7.3$249/mo
- 06 Galileo API yesOSS not on recordFREE yesDOCS 7.3$100/mo
- 07 Giskard API yesOSS not on recordFREE yesDOCS 7.3Free
- 08 Google Cloud Agent Evaluation API yesOSS not on recordFREE yesDOCS 7.3
- 09 Maxim AI API yesOSS not on recordFREE yesDOCS 7.3$29/mo
- 10 Opik API yesOSS not on recordFREE yesDOCS 7.3$19/mo
- 11 Strands Evals API yesOSS not on recordFREE yesDOCS 7.3Free
- 12 W&B Weave API yesOSS not on recordFREE yesDOCS 7.3$60/mo
- 13 MLflow GenAI Evaluation API yesOSS not on recordFREE yesDOCS 7.2Free
- 14 Parea AI API yesOSS not on recordFREE yesDOCS 7.2$150/mo
- 15 Promptfoo API yesOSS not on recordFREE yesDOCS 7.2Free
- 16 Tangle API yesOSS not on recordFREE yesDOCS 7.2Free
- 17 Amazon Bedrock Data AutomationAmazon Web Services API yesOSS not on recordFREE not on recordDOCS 6.9$0.01/mo
- 18 Amazon Nova ReelAmazon Web Services API yesOSS not on recordFREE not on recordDOCS 6.4
- 19 DeepEval API not on recordOSS not on recordFREE yesDOCS 5.9Free
- 20 VRUNAI API not on recordOSS not on recordFREE not on recordDOCS 5.1
- 21 Exgentic API not on recordOSS not on recordFREE not on recordDOCS 5.0
- 22 LangSmith API not on recordOSS not on recordFREE not on recordDOCS 5.0
- 23 OpenAgent Eval API not on recordOSS not on recordFREE not on recordDOCS 5.0
- 24 Sensei API not on recordOSS not on recordFREE not on recordDOCS 5.0
- 25 Benchboard API not on recordOSS not on recordFREE not on recordDOCS 4.9
Is your platform 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 AI agent evaluation tool is ranked first on Inferse?
Arklex is ranked #1 of 29 with a score of 7.4. Future AGI AI Evaluation SDK is second and Noveum third.
How many of these have a free plan?
16 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Amazon Bedrock Data Automation has the lowest first paid tier we found: $0.01/mo.
How is this list ranked?
Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it. Paid placements never change a rank.