Free AI tools, sorted by level

Why these tools

The cards above bring together the site’s 16 tools, sorted by level. They all share the same principles. They’re free and work without an account: no sign-up, no form to fill in. Calculations run in your browser: whatever you enter, whether it’s a text to measure or a budget to simulate, is never sent anywhere. And the data is dated and sourced: prices, context windows, benchmark scores and licenses come from public sources, and every figure shows its date. You always know where a piece of information comes from and how recent it is.

Where to start, based on your profile

You’re new to AI

Start with the “Which AI is right for you?” quiz: a few questions about how you’ll use it are enough to point you toward the best free AI assistant for your needs. The prompt generator then helps you write clear requests, which makes a big difference to the quality of the answers. Before letting an AI act on your behalf, the “Can I trust an agent with this?” tool helps you gauge the risk of a task. To see where you stand, take the AI level test. The Getting started path ties these tools together in a logical order.

You already use AI regularly

The compare models tool puts prices, capabilities and release dates side by side. The context window tool shows whether a long document fits into a model’s working memory in one go, and the token estimator measures the length of a text in the unit models actually use. The AI ranking sums up the standout models every week. The Go further path guides you through these more advanced uses.

You build AI agents

The agent cost calculator simulates your budget based on public model prices and your expected volumes. The open-source models page lists downloadable models with their license and size, the agent frameworks explorer compares development libraries, and the weekly radar gathers the latest research papers and technical discussions. The Build path walks you through them step by step.

How the data is updated

The data is refreshed every week: the site is rebuilt every Monday from public sources, including Models.dev and OpenRouter for prices and capabilities, Epoch AI for benchmarks, Hugging Face for open-source models, GitHub for frameworks, and arXiv and Hacker News for the radar. Consumer assistant plans are collected from each company’s official pages and checked every month. The full details on sources, calculations and their limits are in the methodology.