Another good option is Trip Planner AI. It uses natural language processing to create a personalized itinerary based on your interests and preferences. It can plan fast, with dynamic itineraries that include off-the-beaten-path local recommendations, and it covers multiple cities, though not all of them yet.
If you want a quick, no-fuss planning experience, PlanTripAI automates the creation of a trip itinerary in less than a minute. You set parameters like travel style, budget and length of stay, and the service spits out recommendations. You can create as many itineraries as you want for a one-time fee.
Last, RoutePerfect uses AI to create a personalized itinerary and can book travel arrangements. It's also got a crowdsourced database of peer-reviewed itineraries and a GPS-based audio guide, so it's good for a variety of travel situations.