ChatGPT - Wikipedia ChatGPT is a generative artificial intelligence chatbot developed by OpenAI It was released in November 2022 It uses large language models —specifically generative pre-trained transformers (GPTs)—to generate text, speech, and images in response to user prompts It is credited with accelerating the AI boom, an ongoing period marked by rapid investment and public attention toward the field
You can now use ChatGPT for free without a login - AOL On April 1, OpenAI, ChatGPT’s parent company, opened access to their signature AI chat tool There’s no need to register for a login and password, and it’s totally free of charge
GPT-4 - Wikipedia GPT-4 is preceded by GPT-3 5 and followed by its successor GPT-5 GPT-4V is a version of GPT-4 that can process images in addition to text [3] OpenAI has not revealed technical details and statistics about GPT-4, such as the precise size of the model [4] An early version of GPT-4 was integrated by Microsoft into Bing Chat, launched in
Generative pre-trained transformer - Wikipedia Original GPT model A generative pre-trained transformer (GPT) is a type of large language model (LLM) [1][2][3] that is widely used in generative artificial intelligence chatbots [4][5] GPTs are based on a deep learning architecture called the transformer They are pre-trained on large datasets of unlabeled content, and able to generate novel content [2][3] OpenAI was the first to apply
GPT-4o - Wikipedia GPT-4o ("o" for "omni") is a multilingual, multimodal generative pre-trained transformer developed by OpenAI and released in May 2024 [1] It can process and generate text, images and audio [2][3] Upon release, GPT-4o was free in ChatGPT, though paid subscribers had higher usage limits [4] GPT-4o was removed from ChatGPT in August 2025 when GPT-5 was released, but OpenAI reintroduced it for
OpenAI - Wikipedia OpenAI Global, LLC is an American artificial intelligence (AI) research organization consisting of a for-profit public benefit corporation (PBC) and a nonprofit foundation, headquartered in San Francisco OpenAI developed the GPT family of large language models, the DALL-E series of text-to-image models, and the Sora series of text-to-video models, which have influenced industry research and
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