15MinutePlan.ai is a good option, with a simple interface that'll produce a business plan in less than 15 minutes. It's geared for entrepreneurs seeking funding from investors or a bank loan and works in multiple languages. It uses AI and large language models like GPT-3.5 and GPT-4 to produce a polished plan in a hurry.
Another good option is Upmetrics, which uses AI to produce business plans, financial forecasts and pitch decks in minutes. It's got features like AI Assistants, Financial Forecasting and Collaborative Workspaces, so it can be used for a variety of business needs, including raising funding and launching a startup.
If you're looking for a more affordable option, BizPlanner charges a one-time fee of $9.99 for lifetime access to a full, professionally formatted business plan. It's got a detailed table of contents and industry-specific examples, so it's good for entrepreneurs and small business owners who need a detailed plan to secure funding.