Debug Voice AI at scale.Ship reliable agents.
Zelto analyzes every production call, groups recurring failures into ranked Findings, and drafts the fix, so your team tackles the issues affecting the most callers first.
Trusted by top Voice AI engineering teams
- Calls every month
- 1M
- Hours of conversations
- 11k
- Agents monitored
- +400
Inspect voice agent pipeline
How Zelto surfaces improvements at scale
Zelto extracts the signal from every conversation, then runs thousands of parallel agents to find which gaps are costing you conversion.
Step 01
Ingests every conversation
Store all your interactions — calls, transcripts, messages, LLM traces, logs.
Step 02
Extracts the signal
Evaluators extract signals: caller frustration, knowledge gaps, tool call failures, praise.
Step 03
Runs thousands of agents in parallel
Parallel agents work each cluster of signals, surfacing the patterns that recur.
Step 04
Ranks what's costing conversion
Findings ordered by how many callers they touch, each with a drafted fix.
A business analyst for your voice operation
Ask what changed, see where the flow diverged, and leave a monitor behind. Slack alerts only when you ask.
Chat
Halden RecoveryAsk anything
Try one of these to get started
Ask about agents, calls, findings…
One API, every voice stack you already use.
Native integrations with the big voice platforms. Or connect using our API.
- Custom / API
- Custom / API