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Show HN: MathGPT – Create math animations for any question

84 points by yannigk 2y ago

Hi, we're MathGPT! MathGPT creates Khan-Academy-style animated math videos that intuitively explain complex concepts to students, helping them understand how to solve their problems step-by-step. We're currently serving over 2M users, processing 800M tokens / day and growing! If you try it out, we would appreciate feedback on how we can make the overall experience / video generation better! Email me at ygk2[at]cornell.edu.

freakynit 2y ago
Holy cow this is insanely wonderful. Extremely beautiful explanation of concepts. The generated videos are like professionally hard-crafted. Great work!
- j_bum 2y ago
  Any examples? I’ve tried several prompts and get errors each time the plotting begins
  - freakynit 2y ago
    I tried following: 1. Eigenvalues and eigenvectors 2. Principal component analysis 3. Low rank matrices
jrussino 2y ago
FYI for the input "Graph a cartoid and explain it" I get a correct definition and some interesting facts/properties (in spite of the fact that I mis-remembered the name of the object I had in mind; it should have been "cardioid"). But then it tries to provide a plot, and the plot has an error: ``` Error Please check your input: Undefined variable heta ``` Looks like there's a "theta" that's being incorrectly truncated, or something to that effect. I refreshed a few times and found that I consistently saw this same error.
- yannigk 2y ago
  I was able to replicate your error and pushed a fix, it should be working pretty reliably now for equations that include theta. Let me know if it works for you!
IndieCoder 2y ago
Kudos for the UI, very nice to see the seamless integration of formulas, graphs and videos!
- yannigk 2y ago
  Thank you!
zaptrem 2y ago
We used it to make memes (single sentence prompts) and the results are hilarious How Jeb! Won the election: https://math-gpt.org/?video_id=b9e16dbd-cab6-44e3-a393-f255b0c207dc https://math-gpt.org/?video_id=b9e16dbd-cab6-44e3-a393-f255b... Mathematical proof AI is doomed: https://math-gpt.org/?video_id=c5745f99-b1d1-4c57-8a93-6fe3b1f3bf96 https://math-gpt.org/?video_id=c5745f99-b1d1-4c57-8a93-6fe3b...
- jamilton 2y ago
  Surprisingly funny! AI is often unfunny when it tries to be funny, I wonder why this is better.
  - zaptrem 2y ago
    We wondered the same thing! I wonder which model they’re using.
- malshe 2y ago
  Hilarious! This can potentially go viral
- pixelsort 2y ago
  Ha! Okay, I laughed at "computational phrenology".
- yannigk 2y ago
  Haha these are amazing! I love them!
bassrattle 2y ago
As a test, I input a2b2. It interpretted that as a^2xb^2 which is fine but it kept pronouncing "A squared" as "a square" (more phonetically, "uh square") For a tool meant to enlighten, hearing "a square be square" was confusing.
murkle 2y ago
Sorry, this one is really terrible (also I asked for no audio) https://math-gpt.org/?video_id=6f622c5b-ccf3-408f-9db1-56d63e0570ff https://math-gpt.org/?video_id=6f622c5b-ccf3-408f-9db1-56d63...
- yannigk 2y ago
  Thank you for the feedback! Working on it!
vivzkestrel 2y ago
it says .org in the domain. Is this a "for-profit" privately operated company or some experiment with GPT? did you guys build your own proprietary model or is it using some open source LLM model?
8n4vidtmkvmk 2y ago
Neat, but I think I'd like it better if you simplified it and dropped the focus on teaching students. What I'd prefer is a slightly smarter WolframAlpha that doesn't force me to learn their weird syntax. Let me ask my math question in English, you turn that into a formula and just give me the solution. I don't need the explanation. The video generation is overly ambitious. Some of them come out wonky and wrong.
pino999 2y ago
I don't know, it is still chatgpt. I wouldn't let it near homework soon. I do enjoy the latex rendering. Anyway it can't even solve x mod 66 = 3 (answer: x = 3 + 66k, where k = 0, 1, ...) Somehow it thinks the answer is 32 and it comes with a huge blob of shit.
- yannigk 2y ago
  Thanks for the feedback. We can improve the model's focus on the task at hand and/or ask for more details if doesn't have enough context. With a bit more clarification, MathGPT outputs your answer: https://math-gpt.org/?problem_text=solve%20x%20mod%2066%20%3D%203%2C%20find%20general%20k%20that%20will%20always%20solve%20for%20x&answer_text=To%20solve%20%5C(%20x%20%5Cequiv%203%20%5Cpmod%7B66%7D%20%5C)%2C%20we%20need%20%5C(%20x%20%5C)%20to%20satisfy%20the%20congruence%20condition%3A%0A%0A%5C%5B%0Ax%20%3D%2066k%20%2B%203%0A%5C%5D%0A%0Afor%20some%20integer%20%5C(%20k%20%5C).%20%0A%0ATherefore%2C%20the%20general%20solution%20for%20%5C(%20x%20%5C)%20is%3A%0A%0A%5C%5B%0Ax%20%3D%2066k%20%2B%203%2C%20%5Cquad%20k%20%5Cin%20%5Cmathbb%7BZ%7D%0A%5C%5D%0A%0Awhere%20%5C(%20%5Cmathbb%7BZ%7D%20%5C)%20denotes%20the%20set%20of%20all%20integers https://math-gpt.org/?problem_text=solve%20x%20mod%2066%20%3....
fph 2y ago
Very neat! Can created content be reused freely by teachers? Do you require attribution? I am interested in tikz plots more than in videos, personally.
lagrange77 2y ago
That's a really interesting application of LLMs and manim. My problem with it, as with LLMs in general, is that i can't fully trust it. This isn't a problem with topics you know well. But those 3b1b style tutorials are meant to build an understanding or mental model of a concept for people who don't know it well yet. I'm afraid that, if the output is (partially) wrong, watching such a video could be even harmful in understanding the concept, because your 'greenfield' brain may pick up pieces of it that made sense to it.
T3RMINATED 2y ago
[dead]
Alifatisk 2y ago
I am so happy tools like these gets created and is available for free. When growing up, I had difficulty learning math and I wasn't able to ask my parents for help so much. That is when I found PhotoMath, it changed my life, it became my second teacher and it was for free! I don't think Google even owned it at the time. I remember being very scared of losing it one day. Luckily that never happened, but I will never forget how much these math tools helped me growing up.
mlukaszek 2y ago
It's pretty good! It did quite well when asked a variant of "when do the trains meet" problem, although it used different values for speed than what I told it to use (and what it actually used in textual response: 120km/h and 20km/h in video vs 80km/h and 60km/h in the prompt and textual response). https://math-gpt.org/?video_id=a7489ec5-b06e-480a-96c4-27765cf611ae https://math-gpt.org/?video_id=a7489ec5-b06e-480a-96c4-27765... If it did the animations in 3Blue1Brown style, that would be cherry on the top! ;-) Edit: I did notice it uses Manim, it just doesn't have the same feeling
- xenonite 2y ago
  Sadly the resulting calculation is wrong (190/140≠1.5)
  - mlukaszek 2y ago
    Haha I did not even register that as I expected 1.5 as the answer...
sprobertson 2y ago
Very cool, how does it work? (even if just at a high level)
Jzush 2y ago
I tried it on a simple problem and generated the video thinking I would get a video that would go through the steps of division. Instead it said "Let's take number XX and divide it by number YY using a calculator to get the result ZZ". I'm thinking, wait a tick, you're the calculator. Weren't you supposed to show your work? It's that literally the point? It's a funny utility but I'm not sure it's all that useful.

84 points by yannigk 2y ago

freakynit 2y ago

Holy cow this is insanely wonderful. Extremely beautiful explanation of concepts. The generated videos are like professionally hard-crafted. Great work!

j_bum 2y ago
Any examples? I’ve tried several prompts and get errors each time the plotting begins
- freakynit 2y ago
  I tried following: 1. Eigenvalues and eigenvectors 2. Principal component analysis 3. Low rank matrices

jrussino 2y ago

FYI for the input "Graph a cartoid and explain it" I get a correct definition and some interesting facts/properties (in spite of the fact that I mis-remembered the name of the object I had in mind; it should have been "cardioid"). But then it tries to provide a plot, and the plot has an error: ``` Error Please check your input: Undefined variable heta ``` Looks like there's a "theta" that's being incorrectly truncated, or something to that effect. I refreshed a few times and found that I consistently saw this same error.

yannigk 2y ago
I was able to replicate your error and pushed a fix, it should be working pretty reliably now for equations that include theta. Let me know if it works for you!

IndieCoder 2y ago

Kudos for the UI, very nice to see the seamless integration of formulas, graphs and videos!

yannigk 2y ago
Thank you!

zaptrem 2y ago

We used it to make memes (single sentence prompts) and the results are hilarious How Jeb! Won the election: https://math-gpt.org/?video_id=b9e16dbd-cab6-44e3-a393-f255b0c207dc https://math-gpt.org/?video_id=b9e16dbd-cab6-44e3-a393-f255b... Mathematical proof AI is doomed: https://math-gpt.org/?video_id=c5745f99-b1d1-4c57-8a93-6fe3b1f3bf96 https://math-gpt.org/?video_id=c5745f99-b1d1-4c57-8a93-6fe3b...

jamilton 2y ago
Surprisingly funny! AI is often unfunny when it tries to be funny, I wonder why this is better.
- zaptrem 2y ago
  We wondered the same thing! I wonder which model they’re using.
malshe 2y ago
Hilarious! This can potentially go viral
pixelsort 2y ago
Ha! Okay, I laughed at "computational phrenology".
yannigk 2y ago
Haha these are amazing! I love them!

bassrattle 2y ago

As a test, I input a2b2. It interpretted that as a^2xb^2 which is fine but it kept pronouncing "A squared" as "a square" (more phonetically, "uh square") For a tool meant to enlighten, hearing "a square be square" was confusing.

murkle 2y ago

Sorry, this one is really terrible (also I asked for no audio) https://math-gpt.org/?video_id=6f622c5b-ccf3-408f-9db1-56d63e0570ff https://math-gpt.org/?video_id=6f622c5b-ccf3-408f-9db1-56d63...

yannigk 2y ago
Thank you for the feedback! Working on it!

vivzkestrel 2y ago

it says .org in the domain. Is this a "for-profit" privately operated company or some experiment with GPT? did you guys build your own proprietary model or is it using some open source LLM model?

8n4vidtmkvmk 2y ago

Neat, but I think I'd like it better if you simplified it and dropped the focus on teaching students. What I'd prefer is a slightly smarter WolframAlpha that doesn't force me to learn their weird syntax. Let me ask my math question in English, you turn that into a formula and just give me the solution. I don't need the explanation. The video generation is overly ambitious. Some of them come out wonky and wrong.

pino999 2y ago

I don't know, it is still chatgpt. I wouldn't let it near homework soon. I do enjoy the latex rendering. Anyway it can't even solve x mod 66 = 3 (answer: x = 3 + 66k, where k = 0, 1, ...) Somehow it thinks the answer is 32 and it comes with a huge blob of shit.

yannigk 2y ago
Thanks for the feedback. We can improve the model's focus on the task at hand and/or ask for more details if doesn't have enough context. With a bit more clarification, MathGPT outputs your answer: https://math-gpt.org/?problem_text=solve%20x%20mod%2066%20%3D%203%2C%20find%20general%20k%20that%20will%20always%20solve%20for%20x&answer_text=To%20solve%20%5C(%20x%20%5Cequiv%203%20%5Cpmod%7B66%7D%20%5C)%2C%20we%20need%20%5C(%20x%20%5C)%20to%20satisfy%20the%20congruence%20condition%3A%0A%0A%5C%5B%0Ax%20%3D%2066k%20%2B%203%0A%5C%5D%0A%0Afor%20some%20integer%20%5C(%20k%20%5C).%20%0A%0ATherefore%2C%20the%20general%20solution%20for%20%5C(%20x%20%5C)%20is%3A%0A%0A%5C%5B%0Ax%20%3D%2066k%20%2B%203%2C%20%5Cquad%20k%20%5Cin%20%5Cmathbb%7BZ%7D%0A%5C%5D%0A%0Awhere%20%5C(%20%5Cmathbb%7BZ%7D%20%5C)%20denotes%20the%20set%20of%20all%20integers https://math-gpt.org/?problem_text=solve%20x%20mod%2066%20%3....

fph 2y ago

Very neat! Can created content be reused freely by teachers? Do you require attribution? I am interested in tikz plots more than in videos, personally.

lagrange77 2y ago

That's a really interesting application of LLMs and manim. My problem with it, as with LLMs in general, is that i can't fully trust it. This isn't a problem with topics you know well. But those 3b1b style tutorials are meant to build an understanding or mental model of a concept for people who don't know it well yet. I'm afraid that, if the output is (partially) wrong, watching such a video could be even harmful in understanding the concept, because your 'greenfield' brain may pick up pieces of it that made sense to it.

T3RMINATED 2y ago

[dead]

Alifatisk 2y ago

I am so happy tools like these gets created and is available for free. When growing up, I had difficulty learning math and I wasn't able to ask my parents for help so much. That is when I found PhotoMath, it changed my life, it became my second teacher and it was for free! I don't think Google even owned it at the time. I remember being very scared of losing it one day. Luckily that never happened, but I will never forget how much these math tools helped me growing up.

mlukaszek 2y ago

It's pretty good! It did quite well when asked a variant of "when do the trains meet" problem, although it used different values for speed than what I told it to use (and what it actually used in textual response: 120km/h and 20km/h in video vs 80km/h and 60km/h in the prompt and textual response). https://math-gpt.org/?video_id=a7489ec5-b06e-480a-96c4-27765cf611ae https://math-gpt.org/?video_id=a7489ec5-b06e-480a-96c4-27765... If it did the animations in 3Blue1Brown style, that would be cherry on the top! ;-) Edit: I did notice it uses Manim, it just doesn't have the same feeling

xenonite 2y ago
Sadly the resulting calculation is wrong (190/140≠1.5)
- mlukaszek 2y ago
  Haha I did not even register that as I expected 1.5 as the answer...

sprobertson 2y ago

Very cool, how does it work? (even if just at a high level)

Jzush 2y ago

I tried it on a simple problem and generated the video thinking I would get a video that would go through the steps of division. Instead it said "Let's take number XX and divide it by number YY using a calculator to get the result ZZ". I'm thinking, wait a tick, you're the calculator. Weren't you supposed to show your work? It's that literally the point? It's a funny utility but I'm not sure it's all that useful.