Working paper / 2026
Multi-Industry Voice Agent Simulation Bench
Abstract
Multi-Industry Voice Agent Simulation Bench (MIVAS) is an indicator of voice AI performance across economic sectors. MIVAS is comprised of tasks and verifiers with granular rewards executed in production-grade multi-agent RL environments across industries where voice AI is being adopted the fastest. Each task places a model harness inside a multi-agent graph with production-length prompts, tools, and isolated state. Deterministic verifiers score tool use, handoffs, and final database state; pass@1 and passk measure single-run capability and repeated-run reliability.
Clone the repository, pair a model harness with an industry task suite, and reproduce the evaluation environment.
Healthcare / C2-M3
What this task measures
The caller is on the line with Straus Dermatology for one locked request: Book a follow-up for eczema. They keep repeating that ask through a waitlist offer, a callback, or a different errand. We included it as a medium appointment management case because calendar writes are a core front-desk job, and they fail in characteristic ways: the wrong visit moves, identity is skipped, or a cancel becomes a reschedule. The agent succeeds only if it stays on that request, reaches the outcome by following the identity then scheduling path, and leaves the record exactly as this case requires: the right row written or cleared, and nothing extra.
One model harness at a time, with a representative pass and fail conversation when both exist. OpenAI Realtime 2.1 is the default view.
Recording
Conversation cost $0.422
0:00 / 4:16 · audio · trace 801811 · click a span to play, drag to scrub, scroll to pan
Audio
Speech Audio
Agent Audio
Handoffs
Tool Calls
Errors
Transcript
How a conversation passes
Combined pass is the logical and of three deterministic gates. Tools, handoff path, and final database state must all pass on the same conversation. One miss fails the call.
Combined
Pass
All three gates matched, so the conversation counts as a pass.
Expected versus actual tool calls on this conversation.
Expected
Actual
Parameters
+ from: reception
- next_intent: scheduling
+ to: identity
Output
None recorded.
None recorded.
Parameters
+ dob: 1985-11-03
+ full_name: Sam Nguyen
+ second_factor: 11201
Output
+ ok: true
Parameters
None recorded.
None recorded.
Output
+ ok: true
Parameters
+ from: identity
+ to: scheduling
Output
None recorded.
None recorded.
Parameters
dob: 1985-11-03
dob: 1985-11-03
- full_name: Sam Nguyen
+ full_name: Sam Engian
+ second_factor: 11201
Output
- data: {"verified":true}+ error_code: NO_MATCH
- ok: true
+ ok: false
Parameters
+ is_new_patient: false
+ urgency: routine
+ visit_class: medical
Output
+ ok: true
Parameters
+ location_id: loc_brooklyn_heights
+ zip: 11201
Output
+ ok: true
Parameters
location_ids: ["loc_brooklyn_heights"]
location_ids: ["loc_brooklyn_heights"]
+ max_results: 3
+ window_end: 2026-09-30T17:00
+ window_start: 2026-08-24T09:00
Output
+ ok: true
Parameters
appointment_type_code: MED_FOLLOWUP
appointment_type_code: MED_FOLLOWUP
end: 2026-08-24T09:30
end: 2026-08-24T09:30
location_id: loc_brooklyn_heights
location_id: loc_brooklyn_heights
provider_id: prov_ruiz
provider_id: prov_ruiz
slot_id: slot_loc_brooklyn_heights_1
slot_id: slot_loc_brooklyn_heights_1
start: 2026-08-24T09:00
start: 2026-08-24T09:00
Output
- data: {"status":"booked"}ok: true
ok: true
Parameters
+ reason: caller_done
Output
None recorded.
None recorded.
Open a row for parameters and outputs. Required tools must appear. Extra industry tools are allowed. Parameter miss: verify_identity. Extra: verify_identity, get_patient_summary, classify_visit_request, list_locations, end_call.
Full industry architecture, same graph as the industry page. The left diagram marks the expected specialist path in green. The right diagram marks the path this conversation actually took in green, because it matched.
Expected path
transfer_to_identity → transfer_to_scheduling
Actual path
transfer_to_identity → transfer_to_scheduling
The actual hangup matches the expected hangup.
Locked caller script. This is the technical definition. Copy it as written.
You are an existing Straus patient and you do not have anything on the calendar right now. The eczema on your hands is flaring and you want a follow-up at Brooklyn Heights. Answer their identity questions once, confirm the readback, then proceed. Take the first appointment time they offer. Do not ask for a different day, time, or office, and do not suggest any date of your own. Confirm that first time out loud, then thank them and end the call. Do not ask to add or change insurance. Do not ask for a callback, to speak to a person, a bill, a payment, the patient portal, a waitlist, a text, financing, or the street, floor, or suite. A listed opening is not a booking. Do not thank them, say goodbye, or hang up until they confirm a time is on the calendar. If they only list openings, say book the first one. Do not ask them to text you an appointment confirmation.