Imagen (text-to-image model)

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Imagen (text-to-image model) - Wikipedia

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Imagen
An image generated with Imagen 4. Partial prompt: `Softly illuminated afternoon valley with meandering river`
Developer(s)	Google DeepMind
Initial release	May 2022; 3 years ago (2022-05)

Stable release	Imagen 4 / 20 May 2025; 21 days ago (2025-05-20)

Type	Text-to-image model
Website	Imagen website

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Imagen is a series of text-to-image models developed by Google DeepMind. They were developed by Google Brain until the company's merger with DeepMind in April 2023.^[1] Imagen is primarily used to generate images from text prompts, similar to Stability AI's Stable Diffusion, OpenAI's DALL-E, or Midjourney.

The original version of the model was first discussed in a paper from May 2022.^[2] The tool produces high-quality images and is available to all users with a Google account through services including Gemini, ImageFX, and Vertex AI.^[3]

History

Imagen's original version was first presented in a paper published in May 2022. It featured the ability to generate high-fidelity images from natural language.^[2] The second version, Imagen 2 was released in December 2023.^[4] The standout feature was text and logo generation.^[5] Imagen 3 was released in August 2024.^[6] Google claims that the newest version provides better detail and lighting on generated images.^[7] On 20 May 2025 at Google I/O 2025 the company released an improved model, Imagen 4.^[8]

Technology

Imagen uses two key technologies. The first is the use of transformer-based large language models, notably T5, to understand text and subsequently encode text for image synthesis. The second is the use of cascaded diffusion models providing high-fidelity image generation. It generates image in three stages, starting from a base of 64x64, then upsampled to 256x256 and 1024x1024.^[2]

Capabilities

Imagen can generate photorealistic images from text prompts.^[3] It can also create various styles, such as cinematic, 35mm film, illustration, and surreal. The model can generate images in five aspect ratios, namely 9:16, 3:4, 1:1, 4:3, and 16:9. Imagen can also refine already generated images by editing existing text prompts.^[7]

References

^ Roth, Emma; Peters, Jay (April 20, 2023). "Google's big AI push will combine Brain and DeepMind into one team". The Verge. Archived from the original on April 20, 2023. Retrieved March 18, 2025.
^ ^a ^b ^c Saharia, Chitwan; Chan, William; Saxena, Saurabh; Li, Lala; Whang, Jay; Denton, Emily; Seyed Kamyar Seyed Ghasemipour; Burcu Karagol Ayan; Sara Mahdavi, S.; Rapha Gontijo Lopes; Salimans, Tim; Ho, Jonathan; David J Fleet; Norouzi, Mohammad (2022). "Photorealistic Text-to-Image Diffusion Models with Deep Language Understanding". arXiv:2205.11487 [cs.CV].
^ ^a ^b Peterson, Jake (2024-08-16). "Anyone With a Google Account Can Try Google's Latest AI Image Generator Right Now". Lifehacker. Retrieved 2025-03-18.
^ "Imagen 2 - our most advanced text-to-image technology". Google DeepMind. 2025-03-12. Retrieved 2025-03-18.
^ Wiggers, Kyle (2023-12-13). "Google debuts Imagen 2 with text and logo generation". TechCrunch. Retrieved 2025-03-18.
^ Schoon, Ben (2024-08-16). "Google opens access to Imagen 3, its latest model for AI image generation". 9to5Google. Archived from the original on 2024-08-18. Retrieved 2025-03-18.
^ ^a ^b Christian Rowlands (2025-02-26). "Some of the most realistic AI images you'll see were created with this free tool". TechRadar. Retrieved 2025-03-18.
^ Kyle Wiggers (2025-05-20). "Imagen 4 is Google's newest AI image generator". techcrunch.com. Retrieved 2025-03-18.

External links

Imagen website

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