Actually, I'd argue against using general bots for bio finals! You need a tool that strictly uses your own materials to stop those hallucinations. I love StudyFetch Premium Monthly for this. Its only about $12 a month and is fantastic for turning PDFs into practice tests!

• Upload your specific textbook chapters
• Use their AI tutor to quiz you on your notes
• Generate flashcards instantly Tbh its seriously amazing for cramming!

Building on the earlier suggestion, I've gotta agree that sticking to your own materials is the only way to survive bio. In my experience, general bots are way too risky for finals week. Over the years I've tested dozens of these tools and two really stand out for your $20 budget:

• Quizlet Plus Subscription
• Q-Chat is actually pretty smart for active recall. It wont let you off the hook until you explain the concept back to it.
• Consensus AI Search Engine
• This is the one if you're worried about facts. It only searches real research papers, so no hallucinations. Honestly, I'd probably go with Quizlet for the next three days since you need to memorize stuff fast. Tbh just pick one and grind... switching apps now will just waste time. You've got this!

I feel your pain... honestly chatgpt is notorious for those bio hallucinations. Over the years I have tried a dozen different tools for my own certifications and I learned that you need something that actually checks sources. It is super frustrating when you are on a deadline. Here is what I would do with that $20 and three days:

• Get a month of Perplexity Pro Monthly Subscription because it actually cites its sources. When it quizzes you, it pulls from real papers and textbooks instead of just guessing.
• If you want better reasoning for complex bio cycles, Anthropic Claude 3.5 Sonnet is much more reliable than the standard gpt models in my experience. Dont waste time on the free stuff right now. If you get stuck on a specific concept like cell signaling or metabolic pathways just ping me, I probably have some old notes.

^ This. Also, be careful with grounding issues. I suggest Google NotebookLM Gemini 1.5 Pro 2M since it is free. TL;DR: It sticks to your PDFs to minimize hallucinations. Good luck!