Elon Musk offered $97.4 billion to buy OpenAI.
Sam Altman turned him down in a single tweet:
"no thank you but we will buy twitter for $9.74 billion if you want"
Exactly a tenth of the bid. Musk fired back with one word: "Swindler."
They co-founded OpenAI together in 2015 as a nonprofit. Musk left the board in 2018, and the two have been at war ever since.
The offer came in February 2025 from a Musk-led group that included xAI, right as OpenAI was trying to become a for-profit company. Days later the board rejected it unanimously: "OpenAI is not for sale."
Then it went to court. In May 2026, a jury threw out Musk's lawsuit against OpenAI in less than two hours. He says he'll appeal.
By then OpenAI was valued at about $852 billion. Musk's bid wouldn't buy even 12% of it.
Altman won the tweet. The jury handed him the lawsuit.
Is Musk done, or is the appeal his comeback?
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Andrej Karpathy helped found OpenAI and led Tesla's Autopilot AI team.
In his 2-hour guide to using LLMs, he doesn't start with tips. He starts by taking ChatGPT apart: tokens, the context window, what pre-training and post-training each put into the model.
Only then does he show how he uses it.
Understand the system โ Predict where it fails โ Then use it
That order is why his habits make sense: โ new topic, new chat, because long threads distract the model โ thinking models for hard problems only โ make it run code for math instead of trusting its mental arithmetic
Apply the same order to AI agents: how they pick tools, pass context, recover from mistakes and decide the job is done.
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