Reasoning modelReasoning language models (RLMs) or large reasoning models (LRMs) are large language models that are trained to solve tasks that require several steps of reasoning. They tend to do better on logic, math, and programming tasks than standard LLMs, can revisit and revise earlier steps, make use of extra computations, and enhance performance when increasing the number of parameters, training examples, and training computations.
Removal of Sam Altman from OpenAIOn November 17, 2023, OpenAI's board of directors ousted co-founder and chief executive Sam Altman. In an official post on the company's website, it was stated that "the board no longer has confidence in his ability to continue leading OpenAI". The removal was predicated by employee concerns about his handling of artificial intelligence safety and allegations of abusive behavior. Altman was reinstated on November 22 after pressure from employees and investors.
GPT-4oGPT-4o ("o" for "") is a multilingual, multimodalgenerative pre-trained transformer developed by OpenAI and released in May 2024 as part of its GPT series of models. It can process and generate text, images and audio. Upon release, GPT-4o was free in ChatGPT, though paid subscribers had higher usage limits. GPT-4o was removed from ChatGPT in August 2025 when GPT-5 was released, but OpenAI reintroduced it for paid subscribers after users complained about the sudden removal.
OpenAIUS artificial intelligence companyOpenAI is an American artificial intelligence (AI) public benefit corporation (PBC) headquartered in San Francisco, California. It develops proprietarygenerative AI models, particularly its generative pre-trained transformer (GPT) series of large language models. Its release of ChatGPT in November 2022 has been credited with catalyzing the AI boom; as of September 2026, ChatGPT is the fifth-most-visited website globally.
GitHub CopilotGitHub Copilot is a code completion and programming AI-assistant developed by GitHub and OpenAI that assists users of Visual Studio Code, Visual Studio, Neovim, Eclipse and JetBrainsintegrated development environments (IDEs) by autocompleting code. Currently available by subscription to individual developers and to businesses, the generative AI software was first announced by GitHub on 29 June 2021. Users can choose the large language model used for generation.
ChatGPTGenerative AI chatbot by OpenAIChatGPT is a generative AI chatbot developed by OpenAI. Originally released on November 30, 2022, the product uses large language models—specifically generative pre-trained transformers (GPTs)—to generate text, speech, and images in response to user prompts. ChatGPT accelerated the AI boom, an ongoing period marked by rapid investment and public attention toward the field of artificial intelligence (AI).
Sam AltmanSamuel Harris Altman (born April 22, 1985) is an American entrepreneur and investor who has been the chief executive officer (CEO) of the artificial intelligence company OpenAI since 2019. Altman attended Stanford University for two years before he dropped out and co-founded Loopt, a geosocial networking application for smartphones. Loopt was acquired by Green Dot Corporation for $43.4 million in March 2012.
Microsoft CopilotAI chatbot developed by MicrosoftMicrosoft 365 Copilot
GitHubSoftware development collaboration platformGitHub ( ) is a proprietary developer platform that allows developers to create, store, manage, and share their code. It uses Git to provide distributed version control, and GitHub itself provides access control, bug tracking, software feature requests, task management, continuous integration, and wikis for every project. GitHub, headquartered in San Francisco, is operated by Github, Inc., a subsidiary of Microsoft since 2018.
ReutersReuters ( ROY-tərz) is a British news agency wholly owned by Thomson Reuters, a multinational information conglomerate. It employs around 2,500 journalists and 600 photojournalists in 200 locations and 165 countries worldwide writing in 16 languages. Reuters is one of the largest news agencies in the world. Reuters does not have a single headquarters. The leadership team is split between multiple locations.
Generative pre-trained transformerA generative pre-trained transformer (GPT) is a type of large language model (LLM) that is widely used in generative artificial intelligence chatbots. 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. OpenAI was the first to apply generative pre-training to the transformer architecture, introducing the GPT-1 model in 2018.
APIAn application programming interface (API) is a connection between computers or between computer programs. It is a type of software interface, offering a service to other pieces of software. A document or standard that describes how to build such a connection or interface is called an API specification. A computer system that meets this standard is said to implement or expose an API. The term API may refer either to the specification or to the implementation.*As an Amazon Associate I earn from qualifying purchases.