EXHIBIT 15 July 18, 2000 Securities and Exchange Commission 450 Fifth Street, N.W. Washington, D.C. 20549 RE: ANSYS, Inc. and Subsidiaries 1. Form S-8 (Registration No. 333-8613) 1996 Stock Option and Grant Plan Employee Stock Purchase Plan Commissioners: We are aware that our report dated July 18, 2000 on our review of interim financial information of ANSYS, Inc. and Subsidiaries (the "Company") as of and for the period ended June 30, 2000 and included in the Company's quarterly report on Form 10-Q for the quarter then ended is incorporated by reference in the registration statement referred to above. Very truly yours, /s/ PricewaterhouseCoopers LLP - -----------------------------