Tesla (TSLA) stock advanced 3% afterhours on Wednesday following Elon Musk's primary company posting a $0.05 earnings beat. In the fourth quarter of 2025, Tesla reported free cash flow of $1.42 billion compared with $3.99 billion a year earlier. Concerning the Optimus humanoid robot project, the company wrote in its release, "We made further progress on the Optimus program in 2025. In Q1 of this year, we plan to unveil the Gen 3 version of Optimus, which will include major upgrades from version 2.5, including our latest hand design. Preparations are underway for the first production line, including supply chain readiness, with start of production planned before the end of 2026 and eventual planned capacity of 1 million robots per year."