Django Unchained is indeed based on a true story to an extent. The backdrop of the movie, which is the institution of slavery in the South, is a historical fact. The movie tries to portray the various aspects of this system such as the slave trade, the cruel punishments meted out to slaves, and the attempts by some slaves to resist or escape. While the specific story of Django and his adventures are fictional, they are set within a very real historical framework of slavery, which gives the movie a sense of authenticity and makes it a powerful commentary on that dark period of American history.
Django Unchained is purely fictional. Tarantino crafted the story and characters to present a unique and engaging narrative rather than being based on real events or people. However, it may draw inspiration from various historical and cultural elements.
Django Unchained is not based on actual events. It's a work of fiction that Tarantino crafted to tell a compelling story set in a particular historical context.