Bound the call being delegated
AI Voice Agents and Receptionists helps define the task before comparing voices. Write what a caller may ask, which information the agent may provide and which action needs separate authority. Retell AI’s evaluation guidance favours testing your own calls rather than relying on a polished demonstration.
Administrative purpose
An administrative purpose might be capturing a request for an equipment assessment. Specify required fields, correction behaviour and the next recipient. Capturing a preferred time is different from reserving it. The caller should hear which action occurred. Ask the candidate to demonstrate the difference without treating every completed conversation as a completed business transaction.
Out-of-scope request
An out-of-scope request needs an explicit destination or refusal. A system collecting assessment details should not diagnose a fault or promise a service price from missing information. Test ambiguous requests as well as obvious exceptions. The better candidate explains its boundary and preserves a useful next step instead of producing a confident answer simply to keep talking.
Ordered decision steps
Apply the steps to the task and its acceptance decision.
1. Bound the call being delegated
Retell AI’s evaluation guidance favours testing your own calls rather than relying on a polished demonstration.
2. Administrative purpose
Ask the candidate to demonstrate the difference without treating every completed conversation as a completed business transaction.
3. Out-of-scope request
The better candidate explains its boundary and preserves a useful next step instead of producing a confident answer simply to keep talking.
Test human handoff on the phone line
AI Agents and Business Automation frames handoff as a connection task, not a conversational phrase. Test transfer on the intended telephone path and verify who receives it. Saying that a person will join does not establish that the line connected. Compare the caller’s experience, recipient information and observed transfer result before accepting a candidate’s demonstration of this feature.
Transferred context
Transferred context should help the person continue the task without unnecessary repetition. Agree which fields and caller corrections are appropriate to pass. The recipient should distinguish captured details from verified decisions. Test a changed equipment reference or preferred time before transfer.
No-human fallback
When no person is available, the agent should explain that clearly and follow an authorised alternative. Decide whether a callback request, message or another contact path fits the operation. Do not let the fallback silently imply an immediate response.
| Decision | Check |
|---|---|
| Test human handoff on the phone line | Compare the caller’s experience, recipient information and observed transfer result before accepting a candidate’s demonstration of this feature. |
| Transferred context | Test a changed equipment reference or preferred time before transfer. |
| No-human fallback | Do not let the fallback silently imply an immediate response. |
Tie confirmation to a locked calendar record
API Integration for Businesses makes a calendar record the basis of confirmation. Give the candidate a controlled booking task and inspect the receiving system’s result. A successful tool invocation or confident spoken reply alone is insufficient. The agent must distinguish request captured, reservation pending and slot confirmed.
Time zone
Time zones need explicit handling in both the requested time and the confirmation. Agree the calendar’s reference zone, relevant date and wording heard by the caller. Test a caller correcting the day or using a relative phrase. A correct hour with the wrong date is still an incorrect booking.
Duplicate booking
For duplicate booking, send concurrent requests for the same available slot and retry one request after an uncertain response. Inspect whether the agreed reservation mechanism creates one accepted record or exposes a conflict. The agent should not resolve uncertainty by repeating a creation blindly.
Verify answer sources and spoken detail
Preparing a Knowledge Base for AI Chatbots directs answer testing back to approved knowledge. Identify which information is current and who owns it. Give the agent questions whose answers depend on an exception, not just a matching keyword. Compare the heard reply against that exception.
Approved knowledge
Approved knowledge should retain the condition that makes an answer valid. Opening details, preparation instructions and contact alternatives can have different owners. Include an outdated statement and a corrected version in the controlled test. The candidate should use the accepted information or ask for review, rather than choose whichever sentence sounds easier to present in conversation.
Interruption
Interruption tests reveal whether corrections actually change the task. Speak over an answer, revise a name or number, then ask the agent to repeat the accepted detail. Evaluate comprehension, recovery and the caller’s waiting experience separately. A natural continuation may still use the earlier value.
Ordered decision steps
Apply the steps to the task and its acceptance decision.
1. Verify answer sources and spoken detail
Compare the heard reply against that exception.
2. Approved knowledge
The candidate should use the accepted information or ask for review, rather than choose whichever sentence sounds easier to present in conversation.
3. Interruption
A natural continuation may still use the earlier value.
Explain outage and recording boundaries
CTO Technical Assessment Checklist puts failures and recording into the operating decision. Inventory audio, transcripts, summaries and any stored transaction data. Obtain the organisation’s actual handling and retention decisions before a trial uses private calls. The evaluation should demonstrate what happens when a connection stops, not imply that a technical failure was successful administrative work.
Transaction failure
A transaction failure needs a recognisable state and responsible follow-up. Distinguish a rejected request from an unknown result. Ask how the authorised person finds the affected booking before any retry. Test losing the calendar response after a possible write. The caller should receive accurate uncertainty, while the team retains a way to reconcile the record.
Audio retention
Audio retention should be discussed separately from keeping the final administrative record. Determine purpose, access, deletion behaviour and what persists in summaries or transcripts. Recording can help evaluation but creates its own handling requirements. Do not assume that deleting one audio file removes all derived data.
| Decision | Check |
|---|---|
| Explain outage and recording boundaries | The evaluation should demonstrate what happens when a connection stops, not imply that a technical failure was successful administrative work. |
| Transaction failure | The caller should receive accurate uncertainty, while the team retains a way to reconcile the record. |
| Audio retention | Do not assume that deleting one audio file removes all derived data. |
Reconcile pilot cost with events
Corporate AI Training helps translate pilot observations into a cost comparison. Request the actual terms for telephone numbers, call direction, model use, speech, storage and support. Separate recurring access from consumption and implementation work. Do not copy a supplier’s savings claim into your budget.
Minutes and service charges
Minutes and service charges need a common unit and observation period. Check whether transfer, retries or recordings create separate usage entries under the proposed arrangement. An apparent low subscription can coexist with additional operational charges. Identify who can review usage and stop the pilot.
Acceptance evidence
Acceptance evidence should join critical-field correctness, human handoff, calendar results, failure recovery and caller experience. The team sets its own tolerances and review authority. A candidate may pass one task and fail another; preserve those differences rather than selecting by a single average.
Frequently asked questions
Does natural speech identify the best agent?
No. Listen for naturalness, but compare critical fields, corrections, human transfer and authoritative booking outcomes. A pleasant voice can mask a failed operation or an answer that drops an important condition.
What happens when a caller requests a person?
Follow the approved transfer rule and verify the real recipient. If the connection cannot be completed, explain that and offer the agreed message or callback path without promising immediate human availability.
When is a booking confirmed?
Only after the authorised booking mechanism has successfully reserved the intended slot. A captured preference or submitted request remains distinct from a confirmed calendar record and should be described accordingly.
Is the monthly fee the entire cost?
Not necessarily. Inspect numbers, call direction, speech, model usage, recording, storage, support and setup under the actual terms. Compare the same representative usage rather than treating one advertised recurring fee as total cost.
What must be verified before a voice-agent pilot goes live?
Test authorised access, human transfer on the actual phone path, one calendar reservation and reconciliation after failure. The caller’s confirmation must match the system record. Accept recording rules, response ownership and pilot costs before making a separate go-live decision.
How can candidates be compared fairly?
Use the same starting data and task sequence, including correction, unavailable transfer, duplicate booking and uncertain write. Record individual outcomes so a convincing demonstration cannot conceal a failed critical task.