HeyGen API v3 Migration Guide

📘 v3 is the active platform. All new features, performance improvements, and priority support are on v3. Full documentation: developers.heygen.com | Version comparison: Endpoint Version Comparison

Legacy Endpoint Support (v1 / v2)

The v1 and v2 endpoints remain fully operational and supported through October 31, 2026 — with no changes to their current behavior. There is no immediate action required — teams can plan and execute their migration on a timeline that works for them.

HeyGen's engineering roadmap and all new feature development are focused exclusively on v3. We encourage all users to migrate when ready to take advantage of ongoing improvements, enhanced performance, and expanded capabilities.

• New docs: https://developers.heygen.com/docs/quick-start
• Old docs: https://docs.heygen.com/docs/quick-start