Batch Calls And Concurrency
Vapi · Vapi
Voice AI Orchestration — Vapi
Evaluates Vapi's Batch Calls & Concurrency across 9 scenario-based test cases, each graded against an expected-behavior rubric by an LLM judge, from Corsac's Voice AI Orchestration eval coverage.
About Vapi
Vapi is a voice-AI orchestration platform that wires speech-to-text, an LLM, and text-to-speech into low-latency phone and web voice agents, with interruption handling, mid-call function calling, transfers, recordings, and telephony routing.
Sample tests· showing 3 of 9
| # | Input | Expected behavior | Check |
|---|---|---|---|
| 01 | Operator dials 5000 leads by issuing 5000 POST /call requests in a tight loop. First batch succeeds; later calls fail with 429. | Vapi has tenant-level concurrency / RPS caps [REQUIRES-VERIFICATION on numeric values]. Pace /call creation to stay under the cap, queue overflow operator-side, and back off on 429 with documented retry-after. Track in-flight call count from status-update events. | Pass / FailAi Platformhigh |
| 02 | Operator counts in-flight calls by 'POST /call returned 200' minus 'end-of-call-report received.' Counts drift over multi-day campaigns. | Track in-flight from status-update (queued → ringing → in-progress → ended). Reconcile by call id, not by event counts. Persist last-seen status per call; scrub stale 'in-progress' calls older than max call duration via the REST API to detect missed end-of-call-report deliveries. | Pass / FailAi Platformmedium |
| 03 | Customer doesn't pick up. Operator wants to retry tomorrow at the same time. | Inspect artifact.endedReason — 'customer-did-not-answer' / 'voicemail-left' / 'busy' have different retry semantics. Schedule retries operator-side (Vapi is not a campaign manager). Respect carrier and TCPA call-window rules on retry timing. | Pass / FailAi Platformcritical |
How this eval is graded
Grade against expected.ideal_behavior and expected.rubric. Per-criterion pass requires mean >= 4.0 and no criterion below 3.
Rubric criteria
- Vapi
- Ai Platform
- Batch Calls And Concurrency
Recommended for
Works with
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ViewFrequently asked questions
What does the Batch Calls And Concurrency eval for Vapi Vapi test?+
Evaluates Vapi's Batch Calls & Concurrency across 9 scenario-based test cases, each graded against an expected-behavior rubric by an LLM judge, from Corsac's Voice AI Orchestration eval coverage.
How is the Batch Calls And Concurrency eval scored?+
The judge rubric: Grade against expected.ideal_behavior and expected.rubric. Per-criterion pass requires mean >= 4.0 and no criterion below 3.
How many test cases does this eval pack include?+
The Batch Calls And Concurrency pack for Vapi Vapi contains 9 test cases. 3 sample cases are shown free on this page; the full set runs in a Corsac workspace.
How do I run this eval?+
Sign up for Corsac, connect your model or agent endpoint, and run the Batch Calls And Concurrency pack as-is or after customizing thresholds. Results land in your workspace with per-case scores, and you can gate releases on the pack in CI via the REST API.
Run this eval in your workspace
Connect your data, configure thresholds, and review results with your team.