Previous studies have shown that information regarding competitors has great value for organizations, especially in terms of strategy, making strategic decisions, strategic plans, development of resources, innovation and change, etc. However, most studies tend to investigate competitive intelligence rather than competitor intelligence. Competitor intelligence may be an important factor for organizations to include in their strategy building but too few focus on its impact on such process. Therefore this paper modified one of the strategy tools which are utilized in the strategy building process of organization by including competitor intelligence, with the aim at having a better understanding how competitor intelligence has impact or contribution to the process of strategy building. The modified model shows that with the presence of competitor intelligence, the reliability and feasibility of strategic options are improved to achieve a competitive strategy, which facilitates to enhance competitive advantage and sustainability of the organization.