OpenAI

OpenAI initially focused on novelty projects, like training bots to win video games

With an initial commitment of $1B from tech executives, OpenAI launched in 2015 to develop artificial general intelligence systems. ChatGPT's success after its 2022 launch surprised OpenAI's team as it spurred a global AI race.

ChatGPT is trained on most of the world's digitally accessible text

As with other AI chatbots, ChatGPT is primarily trained through non-supervised pretraining, which identifies underlying structure and patterns within input data. Then, human intervention addresses harmful or biased patterns that should not be propagated to generated outputs.

As of 2025, ChatGPT accounts for more than half of all chatbot traffic

Since ChatGPT's debut of its chatbot in November 2022, the daily use of generative AI has skyrocketed. This chart shows which chatbots are the most used around globally, from OpenAI's ChatGPT to Perplexity and DeepSeek.

Sam Altman says OpenAI released ChatGPT early as a public service

As the company was developing ChatGPT-4, version 3 was released to allow everyone to adjust to the new tool. Since then, he and his colleagues have called for oversight and regulation to address fears of misuse and AI-enabled pathogens.

ChatGPT was conceived over dinner at a Silicon Valley hotel

A guest list of tech leaders, including Elon Musk, Peter Thiel, and LinkedIn cofounder Reid Hoffman, met to discuss how to counter Google's efforts to create human-level cognition systems. The group initially committed a reported $1B to launch the effort.

Artificial general intelligence equals or surpasses human intelligence

AGI incorporates sensory perception, memory, and advanced logical inference systems to move beyond the narrow tasks seen in large language models and chatbots. One of the most significant hurdles in developing AGI is designing systems that learn and can flexibly apply learning across domains.

Before ChatGPT, OpenAI Five beat esports world champions

The bot won two back-to-back Dota 2 matches and developed a new skill of working as a teammate with humans, even though it had only been trained to beat other bots.

Elon Musk once tried to make himself CEO of OpenAI

After three years of funding the company since its 2015 launch, Musk believed OpenAI had fallen too far behind Google and proposed taking the helm. Rejected by OpenAI's other founders, Musk walked away and reneged on a $1B donation. (Some users may experience a paywall.)

View a timeline of Sam Altman's firing and reinstatement as Open AI CEO

Besides saying that Altman hadn't been "consistently candid" in his discussions with them, OpenAI's board did not detail any wrongdoing that led to the firing on November 17, 2023. Four days later, Altman was reinstated, and a new board was assembled.

The philosophy of effective altruism was at the heart of Sam Altman's firing

OpenAI was originally created as a nonprofit to develop artificial general intelligence for humanity's benefit. However, skyrocketing computing costs made adherence to this belief difficult, as new influences, such as external investors, were introduced to accelerate growth with reduced safety.