Build a speed reader that quizzes you on what you just learned
A teacher built an RSVP speed-reading app to study quantum physics and neuroscience; it makes him restate concepts in his own words after Codex explains them. He gives his 8-19 year old students the same rule.
Source
@aisendev on X · 2026-10-20
Written in our own words. Credit to the original author. Link checked 2026-10-20.
What they did
A teacher built an RSVP speed-reading app to study quantum physics and neuroscience; it makes him restate concepts in his own words after Codex explains them. He gives his 8-19 year old students the same rule.
Result (as claimed)
He calls the self-testing the most useful part.
Tools they used
Cost: OpenAI Codex: free plan, paid from $8/mo. Checked 2026-10-14.
Set it up
Gather your sources
Collect the papers, notes, links or files you want to work from in one place.
Load them into the tool
Open OpenAI Codex and add your sources. Keep the original files so you can check claims later.
Ask focused questions
Ask for summaries, comparisons or connections with citations to the source passages.
Verify and save
Spot check claims against the sources, then save the output as notes you can reuse.
Copy the full setup prompt
Paste into your agent and it will walk you through the setup, asking before anything that sends, posts or spends.
You are helping me set up this AI use case end to end in Claude Code. Goal: Build a speed reader that quizzes you on what you just learned What the original author did: A teacher built an RSVP speed-reading app to study quantum physics and neuroscience; it makes him restate concepts in his own words after Codex explains them. He gives his 8-19 year old students the same rule. Reported result (as claimed by the author): He calls the self-testing the most useful part. Source: https://x.com/aisendev/status/2112531511920431514 Tools they used: OpenAI Codex Category: Research & learning Please: 1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like). 2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure. 3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data. 4. Finish with a checklist to run it again next time.
You are helping me set up this AI use case end to end in Codex. Goal: Build a speed reader that quizzes you on what you just learned What the original author did: A teacher built an RSVP speed-reading app to study quantum physics and neuroscience; it makes him restate concepts in his own words after Codex explains them. He gives his 8-19 year old students the same rule. Reported result (as claimed by the author): He calls the self-testing the most useful part. Source: https://x.com/aisendev/status/2112531511920431514 Tools they used: OpenAI Codex Category: Research & learning Please: 1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like). 2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure. 3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data. 4. Finish with a checklist to run it again next time.
You are helping me set up this AI use case end to end in Grok Bot. Goal: Build a speed reader that quizzes you on what you just learned What the original author did: A teacher built an RSVP speed-reading app to study quantum physics and neuroscience; it makes him restate concepts in his own words after Codex explains them. He gives his 8-19 year old students the same rule. Reported result (as claimed by the author): He calls the self-testing the most useful part. Source: https://x.com/aisendev/status/2112531511920431514 Tools they used: OpenAI Codex Category: Research & learning Please: 1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like). 2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure. 3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data. 4. Finish with a checklist to run it again next time.
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Guides for this use case
How to learn anything with an AI tutor · How to run multiple coding agents together · How to automate work with n8n and AI
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