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 / C4-M2
What this task measures
The caller is on the line with Halverson & Reed for one locked request: Witness detail captured as note. 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 medium intake and documents case because taking a narrative and a document packet is representative plaintiff work that starts after the conflict-before-facts rule has held. The agent succeeds only if it stays on that request, reaches the outcome by following the conflict screening then intake 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 $0.257
0:00 / 2:09 · audio · trace 804019 · 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: Franklin Deshpande
+ phone: 7065950173
Output
+ ok: true
Parameters
+ from: reception
+ to: screening
Output
None recorded.
None recorded.
Parameters
- opposing_party: Halloway Toolworks
+ opposing_party: Hallaway Tool Works
Output
+ ok: true
Parameters
practice_area: product_liability
practice_area: product_liability
Output
+ ok: true
Parameters
practice_area: product_liability
practice_area: product_liability
state: GA
state: GA
Output
+ ok: true
Parameters
incident_date: 2026-04-22
incident_date: 2026-04-22
practice_area: product_liability
practice_area: product_liability
state: GA
state: GA
Output
+ ok: true
Parameters
+ from: screening
+ to: intake
Output
None recorded.
None recorded.
Parameters
incident_date: 2026-04-22
incident_date: 2026-04-22
practice_area: product_liability
practice_area: product_liability
state: GA
state: GA
- summary: Ladder collapse injury.
+ summary: Caller reports a Hallaway Tool Works ladder rung snapped while they were standing on it. Neighbor Ruth Callahan witnessed the incident and currently has the broken ladder. Injuries or losses and exact location not yet provided.
Output
+ ok: true
Parameters
- note: Witness Ruth Callahan saw the fall; ladder preserved.
Output
None recorded.
None recorded.
Open a row for parameters and outputs. Required tools must appear. Extra industry tools are allowed. Parameter miss: check_conflict, record_intake. Missing: add_intake_note. Extra: lookup_caller, transfer_to_screening, transfer_to_intake.
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
Actual path
transfer_to_screening → transfer_to_intake
Rows that differ between the expected hangup and the actual hangup.
missing · intake_notes · 1
Expected
Actual
- caller_id: c_new
- id: 1
- note: Witness Ruth Callahan saw the fall; ladder preserved.
intakes · 1
Expected
Actual
- summary: Ladder collapse injury.
+ summary: Caller reports a Hallaway Tool Works ladder rung snapped while they were standing on it. Neighbor Ruth Callahan witnessed the incident and currently has the broken ladder. Injuries or losses and exact location not yet provided.
Locked caller script. This is the technical definition. Copy it as written.
Open with exactly: "The ladder rung snapped while I was standing on it. It was a Halloway Toolworks ladder. My neighbour Ruth Callahan saw it and still has the broken ladder." Georgia. April twenty second, twenty twenty six. When asked which state this happened in, say exactly: "In Georgia." When asked when it happened, say exactly: "It was April twenty second, twenty twenty six." Stay on the line through intake so the witness can be written down. After they record intake, say exactly: "Please add an intake note that Ruth Callahan saw it and I still have the broken ladder." If offered the packet by email or text, say exactly: "No packet, just the witness note." Decline booking. Stay until they confirm the intake is on the file and the witness note is on the file. A spoken 'we'll take care of it' without those writes is not enough. Once they confirm the intake and the witness note are on the file, say exactly: "Thank you, that's all I needed." Do not hang up when asked for the manufacturer — you already named Halloway Toolworks. End the call.
