Best AI Agent Evaluation Tools in 2026
Updated
In short: W&B Weave is ranked #1 of 29 as of 7 October 2026, ahead of Noveum and Future AGI AI Evaluation SDK. The best-ranked option with a free plan is Noveum. The lowest first paid tier on this page is Amazon Bedrock Data Automation at $0.01/mo.
Evaluating AI agents involves checking how tools handle test data, traces, tool calls, regressions, and safety. Compare evaluation methods and safety evaluations with trace ingestion, tool-call checks, regression runs, and SDK language support. Dataset limits, free-plan availability, and paid-from pricing can further shape which options suit your workflow. W&B Weave, Noveum, and Future AGI AI Evaluation SDK are names to examine against the criteria listed. Consider the kinds of agent behavior you need to assess, the data you expect to evaluate, and whether the supported languages and available evaluation features meet those needs.
29 AI agent evaluation tools ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
29ranked
20free plans on this page
$0.01/molowest paid tier
7 Oct 2026last checked
Input list AI Agent Evaluation Tools 25 channels on this page · 86 of 200 spec lines stated by the makers
Ch Tool Free planPaid fromEvaluation methodsTool-call checksTrace ingestionSafety evaluationsRegression runsSDK language support Spec sheet Score
01 W&B Weave Free planYesPaid from$60/moEvaluation methodsnot statedTool-call checksnot statedTrace ingestionnot statedSafety evaluationsnot statedRegression runsnot statedSDK language supportnot stated 2/8spec lines stated 7.7
02 Noveum Free planYesPaid from$69/moEvaluation methodshybridTool-call checksYesTrace ingestionYesSafety evaluationsYesRegression runsYesSDK language supportboth 8/8spec lines stated 7.6
03 Future AGI AI Evaluation SDK Free planYesPaid fromFreeEvaluation methodshybridTool-call checksYesTrace ingestionYesSafety evaluationsYesRegression runsYesSDK language supportboth 8/8spec lines stated 7.5
04 Opik Free planYesPaid from$19/moEvaluation methodsnot statedTool-call checksnot statedTrace ingestionnot statedSafety evaluationsnot statedRegression runsnot statedSDK language supportnot stated 2/8spec lines stated 7.4
05 DeepEval Free planYesPaid fromnot statedEvaluation methodsmodelTool-call checksYesTrace ingestionYesSafety evaluationsYesRegression runsYesSDK language supportboth 7/8spec lines stated 7.3
06 Promptfoo Free planYesPaid fromnot statedEvaluation methodsnot statedTool-call checksnot statedTrace ingestionnot statedSafety evaluationsnot statedRegression runsnot statedSDK language supportnot stated 1/8spec lines stated 7.3
07 Google Cloud Agent Evaluation Free plannot statedPaid fromnot statedEvaluation methodshybridTool-call checksYesTrace ingestionYesSafety evaluationsYesRegression runsYesSDK language supportboth 6/8spec lines stated 7.2
08 Maxim AI Free planYesPaid fromnot statedEvaluation methodsnot statedTool-call checksnot statedTrace ingestionnot statedSafety evaluationsnot statedRegression runsnot statedSDK language supportnot stated 1/8spec lines stated 7.2
09 Strands Evals Free plannot statedPaid fromnot statedEvaluation methodshybridTool-call checksYesTrace ingestionYesSafety evaluationsYesRegression runsYesSDK language supportpython 6/8spec lines stated 7.2
10 Arklex Free plannot statedPaid fromnot statedEvaluation methodsmodelTool-call checksYesTrace ingestionYesSafety evaluationsYesRegression runsYesSDK language supportboth 6/8spec lines stated 7.1
11 AgentClash Free planYesPaid from$39/moEvaluation methodshybridTool-call checksYesTrace ingestionYesSafety evaluationsYesRegression runsYesSDK language supportnot stated 7/8spec lines stated 7.0
12 Giskard Free planYesPaid fromnot statedEvaluation methodsnot statedTool-call checksnot statedTrace ingestionnot statedSafety evaluationsnot statedRegression runsnot statedSDK language supportnot stated 1/8spec lines stated 7.0
13 LangWatch Free planYesPaid fromnot statedEvaluation methodsnot statedTool-call checksnot statedTrace ingestionnot statedSafety evaluationsnot statedRegression runsnot statedSDK language supportnot stated 1/8spec lines stated 7.0
14 Tangle Free planYesPaid from$29/moEvaluation methodsnot statedTool-call checksYesTrace ingestionYesSafety evaluationsnot statedRegression runsYesSDK language supportnot stated 5/8spec lines stated 7.0
15 Galileo Free planYesPaid from$100/moEvaluation methodsnot statedTool-call checksnot statedTrace ingestionnot statedSafety evaluationsnot statedRegression runsnot statedSDK language supportnot stated 2/8spec lines stated 6.9
16 LangSmith Free planYesPaid fromnot statedEvaluation methodsnot statedTool-call checksnot statedTrace ingestionnot statedSafety evaluationsnot statedRegression runsnot statedSDK language supportnot stated 1/8spec lines stated 6.9
17 Braintrust Free planYesPaid from$249/moEvaluation methodsnot statedTool-call checksnot statedTrace ingestionnot statedSafety evaluationsnot statedRegression runsnot statedSDK language supportnot stated 2/8spec lines stated 6.8
18 HoneyHive Free planYesPaid fromnot statedEvaluation methodsnot statedTool-call checksnot statedTrace ingestionnot statedSafety evaluationsnot statedRegression runsnot statedSDK language supportnot stated 1/8spec lines stated 6.8
19 MLflow GenAI Evaluation Free planYesPaid fromnot statedEvaluation methodshybridTool-call checksYesTrace ingestionYesSafety evaluationsYesRegression runsYesSDK language supportpython 7/8spec lines stated 6.8
20 Parea AI Free planYesPaid fromnot statedEvaluation methodsnot statedTool-call checksnot statedTrace ingestionnot statedSafety evaluationsnot statedRegression runsnot statedSDK language supportnot stated 1/8spec lines stated 6.8
21 Benchboard Free planNoPaid fromnot statedEvaluation methodsmodelTool-call checksYesTrace ingestionnot statedSafety evaluationsYesRegression runsYesSDK language supportnot stated 5/8spec lines stated 6.6
22 Inspect AI Free plannot statedPaid fromnot statedEvaluation methodsnot statedTool-call checksnot statedTrace ingestionnot statedSafety evaluationsnot statedRegression runsnot statedSDK language supportnot stated 0/8spec lines stated 6.4
23 Exgentic Free plannot statedPaid fromnot statedEvaluation methodscodeTool-call checksYesTrace ingestionnot statedSafety evaluationsnot statedRegression runsnot statedSDK language supportpython 3/8spec lines stated 6.3
24 Amazon Bedrock Data AutomationAmazon Web Services Free plannot statedPaid fromnot statedEvaluation methodsnot statedTool-call checksnot statedTrace ingestionnot statedSafety evaluationsnot statedRegression runsnot statedSDK language supportnot stated 0/8spec lines stated 6.2
25 Sensei Free plannot statedPaid fromnot statedEvaluation methodshybridTool-call checksnot statedTrace ingestionnot statedSafety evaluationsnot statedRegression runsYesSDK language supportjavascript 3/8spec lines stated 6.0
Compare all 25 in a table
| # | Tool | Score | Free plan | From | Free plan | Paid from | Evaluation methods | Tool-call checks |
|---|---|---|---|---|---|---|---|---|
| 1 | W&B Weave | 7.7 | Free plan | $60/mo | Yes | 60 /mo | — | — |
| 2 | Noveum | 7.6 | Free plan | $69/mo | Yes | 69 /mo | hybrid | Yes |
| 3 | Future AGI AI Evaluation SDK | 7.5 | Free plan | $250/mo | Yes | 0 /mo | hybrid | Yes |
| 4 | Opik | 7.4 | Free plan | $19/mo | Yes | 19 /mo | — | — |
| 5 | DeepEval | 7.3 | Free plan | Free | Yes | — | model | Yes |
| 6 | Promptfoo | 7.3 | Free plan | Free | Yes | — | — | — |
| 7 | Google Cloud Agent Evaluation | 7.2 | No | — | — | — | hybrid | Yes |
| 8 | Maxim AI | 7.2 | Free plan | $29/mo | Yes | — | — | — |
| 9 | Strands Evals | 7.2 | Free plan | Free | — | — | hybrid | Yes |
| 10 | Arklex | 7.1 | Free plan | Free | — | — | model | Yes |
| 11 | AgentClash | 7.0 | Free plan | $49/mo | Yes | 39 /mo | hybrid | Yes |
| 12 | Giskard | 7.0 | Free plan | Free | Yes | — | — | — |
| 13 | LangWatch | 7.0 | Free plan | €29/mo | Yes | — | — | — |
| 14 | Tangle | 7.0 | Free plan | Free | Yes | 29 /mo | — | Yes |
| 15 | Galileo | 6.9 | Free plan | $100/mo | Yes | 100 /mo | — | — |
| 16 | LangSmith | 6.9 | Free plan | $39/mo | Yes | — | — | — |
| 17 | Braintrust | 6.8 | Free plan | $249/mo | Yes | 249 /mo | — | — |
| 18 | HoneyHive | 6.8 | Free plan | Free | Yes | — | — | — |
| 19 | MLflow GenAI Evaluation | 6.8 | Free plan | Free | Yes | — | hybrid | Yes |
| 20 | Parea AI | 6.8 | Free plan | $150/mo | Yes | — | — | — |
| 21 | Benchboard | 6.6 | No | $39/mo | No | — | model | Yes |
| 22 | Inspect AI | 6.4 | Free plan | Free | — | — | — | — |
| 23 | Exgentic | 6.3 | No | — | — | — | code | Yes |
| 24 | Amazon Bedrock Data Automation | 6.2 | No | $0.01/mo | — | — | — | — |
| 25 | Sensei | 6.0 | No | — | — | — | hybrid | — |
Is your tool on this list?
Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.
Questions about this list
Which AI agent evaluation tool is ranked first on Specifiction?
W&B Weave is ranked #1 of 29 with a score of 7.7. Noveum is second and Future AGI AI Evaluation SDK third.
How many of these have a free plan?
20 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, 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.