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Samsung has agreed a $16.5bn (£12.3bn) deal to manufacture artificial intelligence chips for Tesla, in a move hailed by Elon Musk.

The South Korean tech company announced the contract with an unnamed client in a regulatory filing, with Tesla’s chief executive giving further details on his social media platform, X.

Musk wrote that Samsung would produce Tesla’s next-generation AI6 chips at a new plant in Texas.

“The strategic importance of this is hard to overstate,” he wrote.

In December, the Biden administration announced $4.75bn in funding for Samsung’s semiconductor manufacturing facilities in Texas under the Chips Act, legislation aimed at making the US more self-sufficient in chip manufacturing. At the time, the then US commerce secretary, Gina Raimondo, said the funding would ensure the country had a “steady stream” of chips essential to AI and national security.

In a post on X on Monday, Musk said Samsung had agreed to allow Tesla to “assist in maximising manufacturing efficiency” and he would “walk the [manufacturing] line personally to accelerate the pace of progress”.

He added that the Samsung plant in Taylor, outside Austin, Texas, was “conveniently located not far from my house”.

The deal will help re-energise a project that faced long delays amid Samsung’s difficulties in retaining and attracting big clients. Ryu Young-ho, a senior analyst at Seoul-based NH Investment & Securities, said the Taylor plant “so far had virtually no customers”, making the deal “quite meaningful”.

Alvin Nguyen, a senior analyst at Forrester, a global research and advisory firm, said it was a “good deal for both companies”.

He added: “Samsung gets a customer for their semiconductor business and in a US facility that has plenty of capacity. Tesla gets a partner that has the capacity to produce their chips in the US that minimises their supply chain complexity.”

In October, Reuters reported that Samsung had postponed taking deliveries of chipmaking equipment from ASML, a Dutch manufacturer, for the Texas site as it had not yet won any significant customers for the project. It has already delayed the plant’s operational start to 2026.