Luma AI

Photon 1 is a text-to-image generation model developed by Luma Labs, the company also known for its Ray video generation models. Released in early 2025, it is built on a proprietary Universal Transformer architecture rather than the diffusion-based approach used by many image generators, which enables it to produce 1920×1080 resolution outputs with accurate lighting, shadows, and textures. It accepts natural language prompts without requiring specialized prompt engineering, and supports up to four reference images to guide style, composition, or character appearance.

Photon Flash 1 is an image generation model developed by Luma Labs, designed with an emphasis on speed and low-latency inference. It is the "flash" variant in the Photon model family, meaning it is optimized for faster generation cycles compared to more computationally intensive counterparts. The model accepts a context window of up to 1,000 tokens and is accessible through AI platforms and aggregators including MindStudio.

Ray 2 is a large-scale AI video generation model developed by Luma Labs, released in January 2025. It runs on approximately 10 times the compute of its predecessor, Ray 1.6, and is built on a multi-modal architecture trained directly on video sequences rather than individual frames. This training approach gives the model an understanding of natural motion, lighting behavior, and physical object interactions. Ray 2 accepts text prompts, images, or video as input and generates clips ranging from 5 to 9 seconds, extendable up to 30 seconds, at resolutions up to 1080p with optional 4K upscaling.

Ray Flash 2 is a video generation model developed by Luma AI, designed to produce AI-generated videos from text prompts and images. It is the speed-optimized variant within the Ray 2 model family, prioritizing throughput and fast iteration while maintaining visual quality. As part of the broader Ray lineup, it sits alongside Ray 2, Ray 1.6, and Photo Flash 1, giving users options across different speed and quality trade-offs.