While Wendy's chili recipe is not available directly from Wendy's, there are a number of copycat recipes available online that claim to be indistinguishable from the real Wendy's chili recipe. RecipeLion.com provides a recipe that calls for beans, tomatoes and ground beef and takes about 3 hours to cook.
The recipe states to brown the ground beef in a pan and drain the fat. In a large pot combine the ground beef with the rest of the ingredients listed in the recipe, and simmer over low heat. Continue to cook the chili over low heat for about 2.5 hours, stirring every 15 minutes.