2021
January
Anthropic founded by Dario Amodei and sister Daniela Amodei with 5 another five ex-employees of OpenAI.
2022
November
30 Wednesday
OpenAI release ChatGPT. Running off GPT 3.5. Sam Altman (CEO) sends tweet at 11:30am. People start using ChatGPT
2023
March
14 Tuesday
OpenAI release ChatGPT 4 (4months from the first version). Introduced ChatGPT Plus at a cost to $20/month
Anthropic release Claude with limited access
July
11 Tuesday
Anthropic Claude goes to general availability (GA)
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