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On October 26, 2026, Vapi launched a traffic splitting feature that can allocate inbound and outbound call traffic to different versions of voice agents in proportions such as 0.1%, 1%, or 5%, before full release after validation. The feature supports version stickiness based on caller identity, and the official recommendation is to first do a two-way split, changing only one variable at a time. Previously, releasing a new version would immediately switch 100% of traffic over, so teams were afraid to iterate frequently. The feature is currently available, with no further development information yet.
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Vapi Launches Traffic Splitting: Validating New Versions of Voice Agents with Small-Percentage RolloutsDevelopments
1 confirmed developments
- Source:Vapi Blog
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Oct 26
Vapi BlogFirst-party
Vapi Launches Traffic Splitting: Validating New Versions of Voice Agents with Small-Percentage Rollouts
Vapi has introduced a traffic splitting feature that can allocate inbound and outbound call traffic to different versions of voice agents at ratios such as 0.1%, 1%, or 5%, before a full release once validated. The feature supports maintaining version stickiness by caller identity, and the official recommendation is to start with a two-way split, changing only one variable at a time. Previously, releasing a new version would immediately switch 100% of traffic over, so teams did not dare to iterate frequently.