BigBear.ai vs. Nebius: Which Tech Stock Is a Better Buy in 2026?

The article compares two AI-focused tech stocks with opposite market approaches. BigBear.ai provides defense and government intelligence software but faces declining revenue (down 19% in 2025) and mounting losses ($294M net loss). Nebius Group operates AI cloud infrastructure with explosive 479% revenue growth in 2025 and positive net income of $82M, though it carries massive negative free cash flow due to capital-intensive GPU infrastructure spending. The author recommends Nebius as the better buy, citing its larger addressable market ($1 trillion GPU cloud opportunity), consistent profitability, and superior growth trajectory compared to BigBear.ai's struggling government contract model.