One workspace for learning, practice, and review — every session funds verified carbon removal.
Free forever — no card required
Guided explanation, an interactive notepad, and practice that checks what stuck—not one-shot answers.
Explore topics in Learn, teach them back in Explain, or argue in Discuss. Hints and questions—not finished answers in one shot.
Sketch on a shared canvas. The assistant sees your work and nudges the next step—labels and diagrams on the page for collaborative practice.
Generate quizzes on any topic—attach files to match your material—and get scored feedback on what landed.
A new tree each month. Prompt as you study to grow it—past trees stay in your collection.
Mainstream chatbots burn fossil-heavy compute with every prompt. Bonsai runs on renewable power and funds verified carbon removal every time you prompt — 2× the carbon your usage emits on the free plan, about 10× on Pro, measured from your real token usage rather than estimated — so studying actively pulls carbon back out of the air.
Every prompt spins up fossil-fueled data centers at huge scale—adding emissions while nearby communities shoulder the burden.
Bonsai uses European data centers on renewable energy—not the fossil-heavy stack behind most LLMs.
Every prompt funds carbon removal—2× what it emitted on the free plan, about 10× on Pro—so studying pushes the planet forward.
Impact figures are averages; details on request.
Learn, notebook, review, and your garden—all free, for as long as you want them. Pro is $5/month—about the price of a coffee—for higher limits, our most capable model, and 10× your carbon removed instead of 2×.
No payment details required.
Upgrade from Account settings. Auto-renews until canceled.
Study to save the planet.
Bonsai