Hacker News users report mixed but generally positive results with AI coding assistants in 2026 professional workflows. GitHub Copilot and Amazon CodeWhisperer dominate discussions, with teams of 5-50 developers noting productivity gains on repetitive tasks. Jupyter Notebook integrations and JetBrains AI Assistant receive particular praise for debugging support in Python and Java ecosystems. Challenges include security concerns around code provenance and occasional hallucinations in complex logic generation. Medium-sized enterprises like Salesforce and Spotify share case studies where AI reduced development cycles by 20-30% on legacy system modernization projects.