Sora is a text-to-video model developed by OpenAI that generates short video clips based on text prompts or can extend existing short videos. The technology behind Sora is an adaptation of the technology behind DALL-E 3. According to OpenAI, Sora is a diffusion transformer, a denoising latent diffusion model with one transformer as its denoiser. Sora 2, the latest version, was unveiled on September 30, 2025, and is more physically accurate, realistic, and controllable than previous systems, featuring synchronized dialogue and sound effects.
Sora 2 is currently available in the U.S. and Canada. The Sora iOS app is available for download, and users can sign up for a push notification when access opens for their account. ChatGPT Pro users can also access an experimental, higher-quality Sora 2 Pro model. Sora 2 is designed for developers who want to create realistic short videos from text prompts or images. It is also intended for content creators, agencies, brands, filmmakers, and creative teams. As of October 2025, Sora 2 is free for users with an invite, but access is limited by compute availability. The Sora 2 Pro tier is included for ChatGPT Pro subscribers at no additional charge, within their $20/month subscription. Sora 2 is also available via API through Standard Global in Azure AI Foundry for $0.10 per second.
