AI Tools for Researchers

Claude Sonnet is an AI assistant made by Anthropic that you can chat with to get help on almost any thinking or writing task. You type what you need — draft an email, summarize a long document, work through a tough decision, explain something complicated — and it responds in clear, natural language. It's known for being careful, nuanced, and honest, which means it'll tell you when it's unsure instead of just making things up. People use it as a smart sounding board for work, school, and creative projects.

Gemini 2.5 Pro is Google's top-tier AI assistant, designed to handle big, complex tasks that other AI tools struggle with. You can give it massive amounts of information — long documents, hours of video, entire codebases — and it can read, understand, and reason about all of it at once. It's especially good at thinking through hard problems step by step, like a careful expert who shows their work. Most people use it for research, analysis, writing, coding help, and making sense of large piles of information.

Weights & Biases is a digital lab notebook for people building AI and machine learning models. Every time you train a model or tweak settings, it automatically records what you did, how it performed, and what the results looked like — all in one organized dashboard. Teams use it to compare experiments, share findings with colleagues, and figure out which version of their AI is actually the best. Think of it as the difference between scribbling notes on napkins and having a proper filing system for your work.

Perplexity is an AI-powered search engine that answers your questions in plain English and shows you exactly where the information came from. Instead of giving you a list of blue links to click through, it reads the web for you and writes a direct answer with footnotes you can verify. It's especially handy when you want a quick, trustworthy answer without falling down a rabbit hole of tabs. Think of it as asking a really well-read friend who always cites their sources.

Gemini Flash is Google's speedy, budget-friendly AI assistant that can read and understand huge amounts of information at once — think entire books, long meeting transcripts, or hundreds of pages of reports. It answers questions, summarizes content, writes drafts, and analyzes information quickly. People use it when they need solid AI help but don't want to pay premium prices, especially when they're working with a lot of text. It's the practical, everyday workhorse version of Google's smarter Gemini family.

Llama 3 is a family of free AI models built by Meta (the company behind Facebook and Instagram) that you can download and run yourself. Think of it as the engine behind a ChatGPT-style assistant, except you own it — it lives on your computer or your company's servers instead of someone else's. People use it to build private chatbots, customize it for their specific business, or just to have a powerful AI that works offline. It's especially popular with developers and companies who don't want to send their data to outside services.