Although Kemankeş Kara Mustafa Pasha was illiterate, he was one of the successful grand viziers who came to power in the 17th century. Sultan Ibrahim (1640-1648) was a naive sultan with a weak personality who was influenced by his surroundings. Despite this, the state was managed well in the first four years of the Grand Viziership of Kemankeş Mustafa Pasha and the recommendations of Koçi Bey. Kemankeş Mustafa Pasha had the coinage corrected, which led to a recovery in the currency, which in turn led to a revival of trade in the country and an abundance of food and necessities in the cities. Mustafa Pasha also increased the revenues of the treasury by land registry. Despite these achievements, Mustafa Pasha's excessive determination to rule the state on his own led him to remove those who could be his rivals from the capital or to have them killed by deception. Kara Mustafa Pasha secretly provoked the Janissaries against Silahdar Yusuf Pasha, whom he saw as his rival, and this attempt led to his execution. After his death, the state was plunged into political and economic chaos until 1656. Previous studies about Kemankeş Kara Mustafa Pasha were discussed mostly on the basis of the information provided by Naima and Katib Çelebi. In this article, Kemankeş Mustafa Pasha's actions and personality will be evaluated based on the narratives of Ottoman historians such as Anonymous Ottoman Vekayinamesi, Abdurrahman Hibrî Efendi, Kâtib Çelebi, Evliya Çelebi, Topçular Katibi Abdülkadir Efendi, Kara Çelebizâde Abdülaziz Efendi, Vecihî, Ahmed bin Yakub, Mehmed Halife, Solakzâde Mehmed Hemdemi, Naîmâ Mustafa Efendi and Habsburg Ambassador Rudolf Schmid, and it is aimed to provide a new perspective on the subject by comparing the views of these writers.