How has the pharmaceutical industry been affected by the integration of artificial intelligence (AI) into research and development (R&D)?

That is quite a broad question - so the broad answer is the biggest impact (ignoring ai applications in testing/validation/etc) is AI providing research candidates. Until recently there was generally an abundance of target molecules for the potential candidate molecules. AI has turned that on its head by being able to provide a large number of potential candidates for the target, and those lists of candidates will only get more accurate and precise as the technology progresses.

The pharmaceutical industry has experienced accelerated drug discovery, improved predictive modeling, and enhanced patient data analysis with AI integration in R&D, resulting in faster innovation and cost savings.