AI that answers for you makes you worse at learning. AI that makes you think makes you better.
Students using ChatGPT scored worse on tests than those who studied without it.
Bastani et al., Wharton / PNAS 2025A Socratic AI tutor (one that never gives the answer directly) doubled learning in controlled trials.
Kestin et al., Harvard / Scientific Reports 2025Testing yourself beats re-reading. Struggle activates the neural pathways that make knowledge stick.
Adesope et al., 2017 meta-analysisEvery feature in DecodeLM is built around these findings.
Read the full research →Questions, not answer dumps.
Never re-explains what you've mastered.
The state-of-the-art scheduling algorithm. Resurfaces what you know at exactly the right moment.
Your goals, gaps, and preferences, all tracked.
Every concept you learn, every gap you uncover, every goal you set. Mapped, connected, and informing every tutoring session.
Bring your own sources, tap into community knowledge, or let AI find the best content for you.
Expert-written, peer-reviewed articles organized as a connected knowledge graph. Contributing is itself a learning strategy: teaching forces you to solidify what you know.
Upload PDFs, paste URLs, or link articles. The tutor reads and discusses them alongside platform content, no context switching.
Deep research that finds the highest-quality sources on any topic, vetted for accuracy and added to the community graph.
Want to write for DecodeLM?
Peer-reviewed articles. Expert feedback. Your knowledge added to the graph and to every learner's AI tutor.
Other tools help you consume content faster. DecodeLM is built for continuous deep learning.
| DecodeLM | NotebookLM | YouLearn | |
|---|---|---|---|
| Socratic by design | ✓ | — | — |
| Personalized to you | ✓ | — | — |
| Automatic learnings, preferences & gap extraction | ✓ | — | — |
| Spaced repetition scheduling (FSRS) | ✓ | — | — |
| Upload your own sources | ✓ | ✓ | ✓ |
| Community knowledge graph | ✓ | — | — |
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