Question: What company founded notably by Elon Musk and Sam Altman employs Wojciech Zaremba as the head of robotics?

Context paragraphs:
Lo and Behold, Reveries of the Connected World: Lo and Behold, Reveries of the Connected World is a 2016 American documentary film directed by Werner Herzog.  In it, Herzog ponders the existential impact of the Internet, robotics, AI, the Internet of Things, and more on human life.  The film premiered at the 2016 Sundance Film Festival, and was sponsored by the company NetScout.  The film contains interviews with Bob Kahn, Elon Musk, Sebastian Thrun, Ted Nelson, and other leaders of the technology world.

Neuralink: Neuralink is an American neurotechnology company founded by Elon Musk and eight others, reported to be developing implantable brain–computer interfaces (BCIs).  The company's headquarters are in San Francisco; it was started in 2016 and was first publicly reported in March 2017.  The trademark for "Neuralink" was purchased from its previous owners in January 2017.

Justine Musk: Justine Musk (born Jennifer Justine Wilson; born September 2, 1972) is a Canadian author.  She was the first wife to billionaire entrepreneur Elon Musk.

Maye Musk: Maye Musk (née Haldeman; born April 19, 1948) is a Canadian-born American model and dietitian.  Also the mother of Elon Musk, Kimbal Musk, and Tosca Musk, she has been a model for 50 years appearing on the covers of magazines including "Time".  The "New York Post" asserted her self-earned fame by declaring she is "a star in her own right."

Zip2: Zip2 was a company that primarily provided and licensed online city guide software to newspapers.  The company started as Global Link Information Network in 1995 founded by brothers Elon and Kimbal Musk and Greg Kouri in Palo Alto, California with US$28,000 of their father's (Errol Musk) money plus US$6,000 from Kouri.  Initially, Global Link provided local businesses with an Internet presence by linking their services to searchers and providing directions.  Elon Musk combined a free Navteq database with a Palo Alto business database to create the first system.  The company then began to assist newspapers in designing online city guides before being purchased by Compaq Computer in 1999.

The Boring Company: The Boring Company (TBC; also To Be Continued, Tunnels R Us, and American Tubes and Tunnels) is an infrastructure and tunneling company founded by Elon Musk in late 2016 after he mentioned the idea of making tunnels on his Twitter account.  Musk cited difficulty with Los Angeles traffic and limitations with the current 2-D transportation network as inspiration for the tunneling project.

X.com: X.com was an online bank started by Elon Musk in November, 1999 that later became PayPal.  It was one of the world's first online banks.  Its deposits were insured with FDIC.  It had a partnership with Barclays.  It was initially funded by Musk and his business mentor Greg Kouri, who went on to fund Musk's later startups Tesla and SpaceX.

OpenAI: OpenAI is a non-profit artificial intelligence (AI) research company that aims to promote and develop friendly AI in such a way as to benefit humanity as a whole.  The organization aims to "freely collaborate" with other institutions and researchers by making its patents and research open to the public.  The founders (notably Elon Musk and Sam Altman) are motivated in part by concerns about existential risk from artificial general intelligence.

Wojciech Zaremba: Wojciech Zaremba (born November 30, 1988) is a Polish mathematician and computer scientist, noted for his work on artificial neural networks and deep learning.  Zaremba is head of robotics, and founding team member of OpenAI, which mission is to build safe artificial intelligence (AI), and ensure that its benefits are as evenly distributed as possible.

History of SpaceX: This is a corporate history of SpaceX, an American aerospace manufacturer and space transport services company founded by Elon Musk.

Supporting paragraphs: Wojciech Zaremba OpenAI
Answer: OpenAI