(Reuters) - OpenAI CEO Sam Altman has said "no thank you" to a $97.4 billion bid for the startup's nonprofit parent from a consortium led by Elon Musk, the latest twist in a high-stakes power struggle over the future of the ChatGPT maker.

The nonprofit that controls OpenAI is not for sale, Altman told Reuters on Tuesday when asked about Musk's offer that came amid the billionaire's fight to block the artificial intelligence startup from transitioning to a for-profit firm.

Below is a timeline of important events related to the AI company since its inception:

Date Event

December 11, Tech executives including Musk and Altman

2015 announce the launch of OpenAI, pouring in $1

billion to create the AI firm

2018 OpenAI announces that Musk is leaving its

board

2019 OpenAI creates for-profit arm to help raise

funds from investors

Nov. 17, OpenAI board fires CEO Altman and President

2023 Greg Brockman quits. Mira Murati named as

interim CEO

Nov. 18, Altman's firing was over a "breakdown in

2023 communication between Sam and the board," and

not "malfeasance", COO Brad Lightcap says in

an internal memo

Nov. 20, Microsoft CEO Satya Nadella says the Windows

2023 maker has hired Altman, Brockman and their

colleagues to lead a new advanced AI research

team

OpenAI appoints former Twitch boss Emmett

Shear as interim CEO. Shear pledges probe into

Altman's exit.

Nearly all OpenAI staff threaten to quit and

join Altman at Microsoft, demanding board

resign and Altman and Brockman are reinstated

Nov. 21, OpenAI says Altman will return as CEO with a

2023 new initial board. Brockman will also return

Nov. 29, Altman says Microsoft will take a non-voting,

2023 observer position on OpenAI's board

Dec. 13, Axel Springer partners with OpenAI in a

2023 first-of-its-kind deal to deliver summaries of

the global news publisher's content

Dec. 27, The New York Times sues OpenAI and Microsoft,

2023 accusing them of using the newspaper's

articles without permission to train chatbots

Jan. 25, The FTC orders OpenAI, Microsoft, Alphabet,

2024 Amazon and Anthropic to provide information on

recent investments and partnerships as it

scrutinizes tech deals

Feb. 16, OpenAI completes a deal that values it at $80

2024 billion or more, according to media reports

March 1, Musk sues OpenAI and Altman, saying they

2024 abandoned the startup's original mission to

develop AI for the benefit of humanity

March 8, Altman returns to the OpenAI board along with

2024 three new directors

May 14, 2024 OpenAI co-founder and chief scientist Ilya

Sutskever leaves the company