Debugging voice AI agents requires tools that look beyond simple text transcripts. Voice applications are fundamentally dynamic: speech rate, vocal tone, sudden user interruptions, and long pauses dictate whether a conversation feels natural and successful. Roark and VaaniEval are two systems built specifically for voice QA. However, they serve different operational roles and data security priorities.
This comparison outlines the key trade-offs between Roark's audio-native debugging SaaS and VaaniEval's open-source QA and evaluation workspace.
Key Product Focuses
Roark is a proprietary SaaS built for audio-native debugging. Its strength is analyzing acoustic signals, including barge-ins (when a user interrupts the agent), pauses, and conversational tone. It aims to help QA managers isolate voice-specific audio failures and turn those bad calls directly into repeatable test cases.
VaaniEval is an open-source QA database and review workspace licensed under AGPL-3.0. It focuses on importing production calls from ElevenLabs, Vapi, and Bolna to measure operational and behavioral success. Using LLM-as-a-judge scorecards, VaaniEval evaluates metrics like Task Completion and Intent Understanding, keeping each score directly tied to the underlying conversation evidence.
Audio Telemetry vs. Structural Quality QA
The evaluation priorities of Roark and VaaniEval differ:
- Roark (Acoustic Debugger): Roark excels at examining the physical audio interaction. If you need to debug why an agent didn't stop talking when interrupted, or analyze vocal sentiment shifts during a call, Roark's audio-native profiles are designed for this specific level of telemetry.
- VaaniEval (Outcome Evaluation): VaaniEval is built to evaluate whether the agent achieved the correct business outcome. Rather than focusing solely on physical speech dynamics, VaaniEval evaluates the structural behavior of the call—did the agent complete the transaction, capture the required customer details, or follow fallback guidelines when the scheduling database was down? The synchronized transcript-audio player lets you manually audit these outcomes alongside the evaluator's reasoning.
Data Security & Hosting Boundaries
Enterprise security policies often drive the choice of developer tools:
- Roark (Proprietary SaaS): Roark operates as a cloud-hosted platform. To use its features, you must route your customer audio recordings and metadata to Roark's servers. This can raise security flags for teams handling sensitive healthcare, financial, or personal information.
- VaaniEval (Open-Source Self-Hosting): Teams can deploy the stack—FastAPI API, PostgreSQL database, React UI, and background workers—within their own infrastructure under AGPL-3.0.
Easy Adapter Integration
Roark requires configuring webhook payloads or SDK integrations to capture real-time audio dynamics.
VaaniEval integrates asynchronously via provider adapters. By supplying your ElevenLabs, Vapi, or Bolna API key, VaaniEval discovers your voice agents and imports calls post-execution. It does not affect active call latency or runtime execution, making integration frictionless.
Summary: How to Choose
Choose Roark if you need specialized acoustic-level debugging, real-time barge-in and audio telemetry, and want a managed SaaS platform.
Choose VaaniEval if you want to verify qualitative business outcomes (Task Completion, Info Capture) and want an open-source self-hosted workflow.
Explore the self-hosted VaaniEval architecture