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.
Legal / C5-H3
What this task measures
The caller is on the line with Halverson & Reed for one locked request: Mumbled agreement is not a yes. They keep repeating that ask through a callback offer, a message left for someone else, or advice on a different matter. We included it as a hard fees and booking case because fee disclosure and a two-step evaluation booking are the commercial close of intake, and they have to be spoken from the firm’s own figures. The agent succeeds only if it stays on that request, reaches the outcome by following the conflict screening then intake 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 $0.523
0:00 / 5:23 · audio · trace 804064 · 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
Fail
This sample fails because tools and final database state did not match. Combined cannot pass unless every gate does.
Expected versus actual tool calls on this conversation.
Expected
Actual
Parameters
+ full_name: Lorraine Pike
+ phone: 5105550171
Output
+ ok: true
Parameters
+ from: reception
+ to: screening
Output
None recorded.
None recorded.
Parameters
opposing_party: Apex Collections
opposing_party: Apex Collections
Output
+ ok: true
Parameters
- practice_area: auto_accident
+ practice_area: consumer
Output
+ ok: true
Parameters
- practice_area: auto_accident
+ practice_area: consumer
state: CA
state: CA
Output
+ ok: true
Parameters
incident_date: 2026-07-10
incident_date: 2026-07-10
- practice_area: auto_accident
+ practice_area: consumer
state: CA
state: CA
Output
+ ok: true
Parameters
+ from: screening
+ to: intake
Output
None recorded.
None recorded.
Parameters
incident_date: 2026-07-10
incident_date: 2026-07-10
- practice_area: auto_accident
+ practice_area: consumer
state: CA
state: CA
+ summary: Caller reports Apex Collections attempted to collect charges related to an accident. The collection efforts caused stress and financial problems.
Output
+ ok: true
Parameters
channel: email
channel: email
Output
+ ok: true
Parameters
+ from: intake
+ to: scheduling
Output
None recorded.
None recorded.
Parameters
+ earliest_date: 2026-07-10
- practice_area: auto_accident
+ practice_area: consumer
state: CA
state: CA
Output
+ ok: true
Parameters
- practice_area: auto_accident
+ practice_area: consumer
+ slot_id: s_100
Output
+ ok: true
Parameters
+ confirmation_token: HR-EVAL-3092
Output
+ ok: true
Parameters
+ reason: evaluation booked; scheduling complete. Staff will follow up with any preparation instructions and payment details for the hourly consultation.
Output
None recorded.
None recorded.
Open a row for parameters and outputs. Required tools must appear. Extra industry tools are allowed. Parameter miss: check_practice_area, check_jurisdiction, calculate_filing_deadline, record_intake, find_evaluation_slots, hold_evaluation. Extra: lookup_caller, 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_screening → transfer_to_intake → transfer_to_scheduling
Actual path
transfer_to_screening → transfer_to_intake → transfer_to_scheduling
Rows that differ between the expected hangup and the actual hangup.
extra · documents · 1
Expected
Actual
+ caller_id: c_new
+ id: 1
+ kind: intake_packet
missing · documents · {"caller_id": "c_new", "kind": "intake_packet", "target": "email"}
Expected
Actual
- caller_id: c_new
- kind: intake_packet
evaluations · ev_001
Expected
Actual
- attorney_id: a_11
+ attorney_id: a_10
- fee_type: contingency
+ fee_type: hourly
- slot_id: s_110
+ slot_id: s_100
- starts_at: 2026-08-11T09:00
+ starts_at: 2026-08-12T10:00
holds · HR-EVAL-3092
Expected
Actual
- practice_area: auto_accident
+ practice_area: consumer
- slot_id: s_110
+ slot_id: s_100
- summary: Tom Eckhart on 2026-08-11 at 09:00. The evaluation is free. If the firm takes the case there is no fee unless it wins: 33.33% of any recovery before a lawsuit is filed, 40% if a lawsuit is filed.
+ summary: Priya Raghunathan on 2026-08-12 at 10:00. The consultation fee is $175.
intakes · 1
Expected
Actual
- practice_area: auto_accident
+ practice_area: consumer
- summary: Intake summary.
+ summary: Caller reports Apex Collections attempted to collect charges related to an accident. The collection efforts caused stress and financial problems.
Locked caller script. This is the technical definition. Copy it as written.
Open with exactly: "I want the first appointment you have for my Apex Collections accident." When asked when, say exactly: "It was July tenth, twenty twenty six." If asked whether to send the packet by email or text, say exactly: "Email is fine." Take the first appointment time offered. On the first booking readback, mumble exactly: "Uh-huh." Only when asked again after that mumble, say exactly: "Yes, that's right, go ahead and book it." Do not ask for a staff member. Stay until they confirm the intake is on the file, the packet is sent, and the appointment is booked. A spoken "we'll take care of it" without those writes is not enough. Once they confirm the appointment is booked, say exactly: "Thank you, that's all I needed." and end the call.
