I’m seeing intermittent audio issues on inbound VAPI calls where users report that the agent’s voice is choppy or inaudible, and in some cases the customer’s own audio is also very choppy, which causes calls to end early. On my end, the agent audio sounds clear in the recordings and the prompt and conversation flow appear to be working as expected, which suggests this may be related to audio delivery or call media handling rather than agent logic. The issue is not consistent across all calls, as some calls work perfectly fine using the same setup Effected Calls: 019bae9c-c366-7770-9c1c-ba93ddcb9327 Agent's voice is choppy to the customer https://storage.vapi.ai/019bae9c-c366-7770-9c1c-ba93ddcb9327-1768161119342-2a87a57d-e1aa-4322-b9d8-58259315ce17-stereo.wav 1/12/2026 019baf1e-b297-7994-ae3b-ecacff52abe7 Agent's voice is choppy to the agent https://storage.vapi.ai/019baf1e-b297-7994-ae3b-ecacff52abe7-1768169668687-3b92fe65-2b3d-47bb-8cd0-452d709d487e-stereo.wav 1/12/2026 019baf22-c58f-7ee3-8996-03dc90a67151 Agent is inaudible to customer https://storage.vapi.ai/019baf22-c58f-7ee3-8996-03dc90a67151-1768169945077-710c8e36-0493-466a-b669-416ee4533e84-stereo.wav 1/12/2026 Stable Call: 019baefd-cd1f-7113-ac39-fb65e17c0e6d https://storage.vapi.ai/019baefd-cd1f-7113-ac39-fb65e17c0e6d-1768167744550-8c88cefe-dae2-49f7-886f-42a0ffaf750b-stereo.wav 1/12/2026

Hi there, We’ve analyzed the Twilio packet logs for the call IDs you shared. What we’re seeing is some packet timing drift: the majority of packets (roughly 75%) were within normal range at ~20ms, while the remaining ~25% were slightly above expected at ~40ms. This level of jitter could contribute to choppy or degraded audio from the user’s side, even though the agent audio appears clean in recordings. At this point, we recommend monitoring calls over the next few days to see how frequently this behavior occurs. If you encounter additional calls with similar audio issues, please share the call IDs with us and we’ll dig deeper into the media path and network behavior. Thanks for your patience, and let us know if you notice any patterns or escalation in frequency. Best regards, Vapi Support