Jellyfish’s May 2025 update on GenAI perception vs reality analyzed GitHub Copilot’s impact across 20,000 engineers at 300 companies. While surveys show enthusiasm, quantitative analysis revealed clearer insights: Copilot accelerated coding time by 25.2%, increased PR throughput by 12.1%, and shifted 17.1% more work toward roadmap initiatives over maintenance. Still, 35% of engineers did not actively use AI, leaving productivity gains untapped. The report stresses that despite strong adoption trends—1.8 million paid subscribers—organizations need proper telemetry to measure ROI, optimize usage, and fully capture GenAI’s potential.

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