Congrats! You found Phy’s secret update log.
I’m Jason, the creator of Phy. I log all changes to Phy on this page. Phy is a learning assistant built to work alongside you: it does the heavy lifting, and you stay in control and make the final edits. You can follow me on X for quicker updates.
Please note I’m currently the only person building Phy. Updates might seem slow to come. But they will definitely be coming!
Click here to view the Roadmaps for features I’m currently building. Feel free to send me a message about a feature you would want to see.
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11.01.26 – V4
- Version 4 is the biggest update in Phy‘s history: a full year-long overhaul, rebuilt from the ground up, from the engine to the interface.
- Phy now runs on a brand-new, far more capable model, paired with a teaching engine built from scratch for physics and math.
- Cortex, Phy’s new memory: Phy remembers what you’re studying, what you’ve mastered, and where you get stuck, so every session picks up where the last one left off.
- Phy is now everywhere on Nerd Notes. The same Phy, with the same memory, works across Phy Chat, Docs, UBQ, and Quiz Lab, and carries your context from one tool to the next.
- Answers now stream in live as Phy writes them, so you never wait for a full reply.
- Custom in-chat tools: step-by-step solutions, hints that guide you one step at a time (with a solve-it-fully option when you’re stuck), auto-generated graphs, and follow-up questions.
- In-chat quizzes: Phy can quiz you on what you just learned, right inside the chat, and walk you through anything you miss.
- Flashcards: Phy turns the key ideas from your chat into a flashcard deck. Grade yourself on each card, and Phy follows up on the ones you struggled with.
- Agents: Phy can send out research agents that search the web, read the sources, and write what they find into a doc for you, live.
- Docs: create, edit, and share study docs with Phy built right in. Make a doc public and anyone can read it, or browse docs from other students in the new Explore tab.
- Personalized to you: tell Phy about your class, goals, and how you like to learn in Learning Lab, and it shapes every answer around you.
03.15.24 – V3 Beta 1
- Version 3, released in 02.22.25, introduces over 30 new features to Phy, implemented in beautiful redesigned interface.
- Internally, Phy has experienced a significant performance enhancement, approximately 180% faster in generating responses.
- You can now open unlimited chats to solve more problems simultaneously.
- A new dark mode option and customizable theme settings have been introduced to enhance user experience.
- The Learning Lab provides customization options for quick actions.
- The Ultra membership tier has been rebranded to Pro, with all existing Ultra members automatically upgraded to Pro status. Pro members now have full access to all chat features.
- The chat input field incorporates a custom LaTex editor, enabling users to accurately type mathematical equations, matrices, and other complex expressions.
- New tools have been developed to facilitate the organization of solution steps and answers.
- All existing tools such as graphing, tags, and formulas, continue to work from the previous version
11.08.24 – Beta 12
- Released first version of Learning Lab, where you can customize every aspect of your chat.
- Learning lab is still in rollout phase. For ultra members. Available on 12.25.24 for all Pro Users.
- More minor changes to prepare for PhyV3 rollout by EOY.
10.10.24 – Beta 11
- New graphing tool! Phy can now automatically generate graphs.
- Minor changes to interface to prepare for PhyV3.
8.26.24 – Beta 10
- Released Phy Model 10. 2x faster and 2x more accurate than previous version. Re-trained on 10,000+ images and question texts.
- Phy can now solve problems in < 15 seconds, consistently.
- Bigger and overall better UI for messages and mathematical outputs for the main chat interface.
- Phy now gives a follow up question, if needed, after answering your question.
- Phy now lists all formulas and important concepts after solving a problem.
- Higher quality and faster image processing.
5.27.24 – Beta 9
- Massive revamp to UBQ UI and question grading.
- Phy now grades ALL MCQs and FRQs in under < 3 seconds.
- Phy automatically provides instant feedback on any question you missed.
- You are now given a score for all questions, which is tracked across all your attempts.
3.28.24 – Beta 8.1
- Fixed UI “glitches” for first time users.
- Added 15 second popup ads to help support growing costs.
- More UI changes to interface. Now clearly displays user’s current plan.
3.20.24 – Beta 8
- Biggest Phy Upgrade Yet!
- Smoother UI animations overall.
- Popup for images. Now you can simply click on an image to enlarge it and view details.
- Word limiter – Phy can now take up to 300 words per message for Pro users and 100 words for regular users.
- Multiple image support – Pro Users can upload up-to 3 images at once vs 1 image for free users.
- Total images – free users can upload their first 25 for 100% free. Pro users can upload unlimited images.
- Pro Users get access to newest version Phy Pro LLM, trained on Physics, Math, and Science Datasets, out performing GPT-3.5 and 4 (in some cases).
- Better UI for Smart Action Buttons
- Unlock Phy Pro – You can now pay to access the latest version of Phy (50% faster, and 75% more accurate + 20 new features). It’s only $2.99. Education for the price of coffee!
- Smooth 1-click checkout experience for uninterrupted learning.
- Easy subscription management on student dashboard.
- Thank you to everyone who has already purchased a subscription!
3.10.24 – Beta 7.1
- Added smart actions! Now you can quickly select follow-up responses without having to type anything. Just click and hit send.
- For example, click “Generate” to generate similar questions to the one you just solved.
- Bonus: “New-Question.” This smart action lets Phy know if you are ready to move on to the next question, speeding up responses by 50%.
- More UI interface tweaks. Equations are now properly spaced.
- Optimized mobile typing to mimics a true-app like experience. Working towards building a PWA (progressive web application).
3.2.24 – Beta 7
- Completely re-built Phy processing system from the ground up.
- Re-trained Phy to be more accurate for more advanced Physics, Engineering, and Math problems.
- Faster replies and 80% reduced hallucinations.
- Used to take ~35 seconds on avg. for a full response. Now takes ~20 seconds.
- Image recognition is now ~15% percent faster and 50% more accurate. Can read even “terrible” handwriting.
- Upgraded context input. Phy can now remember even more. Note the “adaptive learning” is an alpha feature and not yet available for the general public.
- Upgraded math rendering for cleaner, more consistent output. Fixed most “random” math symbols showing up in text
- Removed “grading” functions on UBQ questions. Replaced with a simpler “chat” model to simply talk to Phy.
2.18.24 – Beta 6.3
- Bug fixes on front end chat UI. More consistnent and look and feel across all devices.
- Smoother animations.
- Phy boots up faster now.
- Under the hood optimization for Beta 7 upgrades.
- Stats update. Over 1000 students have used Phy. On average 75 students use Phy daily. 2000 images uploaded. 25,000 total chats with Phy. Growing 25% week over week.
2.12.24 – Beta 6.2
- Analytics are finally here! View number of total users, messages sent, images processed, and costs that I’ve completely covered (while Phy runs 100% for free in Beta).
- User and global stats are now shown on the front home page for full transparency.
- Note that I plan of aggregating more stats in the future. Building beta 7, however, takes precedence.
1.22.24 – Beta 6.1
- Minor Fixes on front end. Phy should now respond slighly faster.
- Amazing feed back from image integration.
- Added the ability to “snap” pictures directly from smart phone.
- Small tweaks to the UI to improve functionality
1.09.24 Beta 5 – 5.7
- First new year upgrades. Faster and more accurate overall.
- By popular demand, have included and image uploader for ALL beta users (limited to images < 5 MB) This might get expensive quickly. But am interested in your feedback.
- Build image recognition engine. Phy uses this to understand images in < 30 seconds. I expect this number to drop significantly over the months.
12.25.23 – Beta 4
- First public beta for Phy. 🎉🎉 Thank you to all our alpha testers for feedback.
- Phy is fully trained on ~5000 hours of live Physics tutoring. Re-training on a larger data set is on the future to-do list.
- Accuracy ~85%. Improving by ~10% every beta release. Excepted to be < 1% wrong by end of ’24.
Roadmap
Winter 24
- ✅ Profile Builder – Tell Phy more about yourself. Completed: shipped as Learning Lab.
- ✅ More in-chat tools – graphing, and step by step solving tools. Completed in V4, plus hints, quizzes, and flashcards.
- ✅ Faster chat processing and creation. Completed: answers now stream in live.
Spring 25