Video generation with the Sora 2 API

Announced at dev day but didn't get a corresponding announcement post. There is also a prompting guide: https://cookbook.openai.com/examples/sora/sora2_prompting_gu...

Pricing is up on the pricing page, with $0.30/s being the equivalent generation for what's in the Sora app: https://openai.com/api/pricing/