Shares in Samsung Electronics eked out small gains on Tuesday, following a sharp rally the previous day after the South Korean technology company clinched a $16.5 billion deal to supply artificial intelligence chips to Tesla .

Musk noted Tesla is working with TSMC to make AI5 chips, which just finished the design. The A15, a generation that is primarily built for FSD. will initially be made in TSMC’s Taiwan factory and then at its Arizona facility. Samsung already makes the A14 chip, according to Musk.

Samsung will produce AI6 semiconductors, the next-generation chip, for Tesla’s self-driving mode and other projects.