Veo 3 API Tutorial: Generate AI Videos in 5 Lines of Code (Python + JavaScript Guide 2025)

Veo 3 API Tutorial: Generate AI Videos in 5 Lines of Code (Python + JavaScript Guide 2025) Google's Veo 3 just landed in the Gemini API — and it's the most capable AI video model available to developers right now. In this complete tutorial, you'll learn how to generate AI videos via API, plus how to use NexaAPI as a flexible, cost-effective alternative that's available right now with no waitlist. What Is Veo 3? Veo 3 is Google DeepMind's flagship video generation model, now available in paid preview via the Gemini API. It's the first model to natively generate synchronized audio alongside video — dialogue, sound effects, and music in a single pass. Key capabilities: Text-to-video generation (image-to-video coming soon) Native audio generation (dialogue, SFX, music) Up to 1080p HD output Vertical video support (9:16 for social media) Realistic physics simulation SynthID watermarking for responsible AI Pricing: Veo 3: $0.40/second of video output Veo 3 Fast: $0.15/second of video output