Re: 6 months free Claude Max 20x for working on Maxima

Alfonso Zerwekh <[email protected]> Mon, 20 Jul 2026 11:19:32 -0400
Newsgroups gmane.comp.mathematics.maxima.general
Message-ID <CAJEtT60E7X2nBVK5GBGQ86C_tnJ6KsEXarfVUdgFnaEgSDZbkQ@mail.gmail.com>
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Yesterday, I announced MaxLoop: a Maxima package for Particle Physics. I
developed this package over the last three weeks. Of course, I have
strongly used AI (ChatGPT) for doing it. Without AI, it would have taken me
years. The development process was as follows: I had the idea, ChatGPT
started coding, I tested the code locally and returned the results to the
AI, and then the AI improved the code and moved to the next version. At
some points, I took design decisions: what to include, what method to use
for some task, but I didn't write a line of code.

This is my first time developing something for Maxima and also the first
time using AI so intensively.  I see the use of AI as
an enormous opportunity making, in my case, the difference between the
possible and the impossible. I agree with Viktor that some cautions are
need. In my case, it was crucial to test everything myself.

That's my two cents.
--=20
Prof. Alfonso R. Zerwekh
Department of Physics
Universidad Tecnica Federico Santa Maria
Skype: azerwekh
cel: +56996795670


On Mon, Jul 20, 2026 at 9:49=E2=80=AFAM David Scherfgen via Maxima-discuss =
<
[email protected]> wrote:

> I agree with you, Viktor, and thanks for the words of caution.
> I'm not letting myself get pushed out of the loop. I explicitly instructe=
d
> Claude to not try to run any code on its own or make modifications withou=
t
> my consent.
> The new "Fable" model seems very capable. I've thrown entire Maxima
> modules at it with the simple task to find potential bugs, and it found
> lots of them, no hallucinations whatsoever.
>
> Am So., 19. Juli 2026 um 19:40 Uhr schrieb Viktor T. Toth <
> [email protected]>:
>
>> It is indeed awesome that Anthropic does this but allow me to offer, fro=
m
>> experience, words of caution when it comes to "agentic" use of LLMs in
>> development work.
>>
>> I've been using LLMs actively as a tool since early 2023. The
>> productivity boost is unbelievable. I was able to complete things in hou=
rs
>> that previously would have taken days or weeks, with a result much bette=
r
>> in quality than anything I'd have created on my own.
>>
>> At first, there was of course only one way of doing things: ask the AI t=
o
>> write code, add it to your project, test it, fix it or ask the AI to fix
>> it. Or maybe ask the AI to analyze existing code, especially code with
>> known bugs, and offer suggestions to fix or improve it.
>>
>> But then, coding agents arrived automating much of that. The crucial
>> difference: in conventional prompting, it is I, the human, who decide --
>> after reviewing the code, inserting it into the project, testing it --
>> whether or not the code delivers the expected result or behavior. In the
>> agentic model, the human is mostly removed from this low-level loop: the
>> agent writes the code, tests the code in a sandbox, evaluates and revise=
s
>> it without human intervention. The human only sees the log and the final
>> result presented for approval. The process, though not completely opaque=
,
>> becomes far less transparent.
>>
>> This, in my view, is a very dangerous slippery slope. Without the mental
>> history of active participation, it is impossible to "own" the resulting
>> code. The human is no longer acting as a senior developer with LLMs as
>> highly capable junior helpers, but more like a project manager who
>> evaluates project success not on the basis of actual, hands-on experienc=
e
>> but on the basis of KPIs on PowerPoint slides at the weekly meeting. The
>> difference, of course, is that the senior developers working for that
>> project manager are themselves experienced. LLMs are not "experienced".
>> They have incredible book knowledge, but ultimately that's all they have=
:
>> their so-called "hallucinations" arise because for an LLM, words exist o=
nly
>> in relationship with other words, not lived experience. And all it takes=
 is
>> a slightly misguided, overly enthusiastic prompt, for instance, for the =
LLM
>> to invent a bug where none exists, because it seems like a statistically
>> more satisfactory response to the prompt than simply confirming that a
>> piece of code is valid and requires no change or refactoring.
>>
>> Long story short, I tried coding agents and rejected that approach
>> myself, at least for now. They automate the part of my work that needs
>> automation the least, at the price of removing me from the very loop tha=
t
>> would allow me to retain mental ownership of the code that bears my name=
.
>> Especially in the case of a mature project like Maxima, with decades-lon=
g
>> legacy, written in a nontrivial programming language, implementing its o=
wn
>> language with notable idiosyncrasies, and relying on sophisticated
>> mathematics, I worry that the use of LLMs as coding agents, as opposed t=
o
>> coding assistants, will lead to trouble.
>>
>>
>> Viktor
>>
>>
>>
>>
>> On 2026-07-19 10:57, Raymond Toy wrote:
>>
>> On 7/18/26 11:49 PM, David Scherfgen via Maxima-discuss wrote:
>>
>> Dear all,
>>
>> Anthropic (the company behind the Claude AI) launched a programme
>> <https://claude.com/contact-sales/claude-for-oss> that allows Open
>> Source developers/contributors to apply for 6 months free Claude Max 20x=
,
>> which normally costs $200 per month.
>>
>> A friend recommended me to apply for it (I didn't know about it), citing
>> my recent work on Maxima, and indeed I got selected! To those
>>
>> Awesome!
>>
>>  who've made significant contributions (see terms
>> <https://www.anthropic.com/claude-for-oss-terms>): I encourage you to
>> apply, too. In my application, I mentioned that Maxima lives on SourceFo=
rge
>> and selected the Maxima GitHub mirror <https://github.com/calyau/maxima>
>> as the project. If you like, let me know before you apply, then I can
>> update the GitHub mirror so that the most recent commits are visible the=
re,
>> if that helps you.
>>
>> It=E2=80=99s a pain that that can=E2=80=99t be automated AFAIK. I have s=
ome projects on
>> gitlab that get automatically mirrored to github whenever I check in
>> anything into gitlab. (This is mostly for a kind of backup. And also for
>> Claude since gitlab is my canonical repo.)
>>
>>
>> I'm still getting used to Claude, but I can already say that it's
>> incredibly powerful and far superior to my previous Gemini-based workflo=
w.
>> The best part is that it can access code (read & write) and execute
>> commands (e.g. run Maxima to test things) locally on your computer. I'm
>> still careful with that, though.
>>
>> I=E2=80=99ve been using Claude for a while. It works quite well for me. =
But do be
>> careful. It was hallucinating problems and solutions for me, making up
>> things that didn=E2=80=99t actually exist. I eventually added a rule tha=
t it
>> shouldn=E2=80=99t guess but actually look at the source code and nothing=
 else
>> unless I ask for it.
>>
>> I also only use the browser version. I didn=E2=80=99t want to give it ac=
cess to
>> any of my actual machines or to modify any code. This works fine except =
I
>> have to download and apply suggested changes. But I since I have gitlab
>> mirrored, it can fetch the latest github code to see what I did and and
>> what=E2=80=99s next.
>>
>>
>> Do you have suggestions for new features that I might try to tackle
>> during these 6 months? Of course I can also keep fixing bugs, or both.
>>
>> Both, of course! But it=E2=80=99s up to you.
>>
>> There are personal projects I wanted to do but haven=E2=80=99t really ma=
de any
>> progress. One big one was support for theta functions. A long time ago, =
I
>> (or this list?) got a screenshot from Bill Gosper (yes, that Bill) about
>> the work he had done with theta functions. Really impressive. Even had t=
he
>> code, but so much of was in lisp on real Macsyma so I never figured out
>> what those functions actually did. I think he also sent some nice
>> algorithms for computing 2F1 over the entire plane. Barton has solved th=
is
>> using a different approach, I think.
>> &#8203;
>>
>>
>> _______________________________________________
>> Maxima-discuss mailing [email protected]://l=
ists.sourceforge.net/lists/listinfo/maxima-discuss
>>
>> _______________________________________________
>> Maxima-discuss mailing list
>> [email protected]
>> https://lists.sourceforge.net/lists/listinfo/maxima-discuss
>>
> _______________________________________________
> Maxima-discuss mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/maxima-discuss
>

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<div dir=3D"ltr"><div>Yesterday, I announced MaxLoop: a Maxima package for =
Particle Physics. I developed this package over the last three weeks. Of co=
urse, I have strongly=C2=A0used AI (ChatGPT) for doing it. Without AI, it w=
ould have taken me years. The development process was as follows: I had the=
 idea, ChatGPT started coding, I tested the code locally and returned the r=
esults to the AI, and then the AI improved the code and moved to the next v=
ersion. At some points, I took design=C2=A0decisions: what to include, what=
 method to use for some task, but I didn&#39;t write a line of code.</div><=
div><br></div><div>This is my first time developing something for Maxima an=
d also the first time using AI so intensively.=C2=A0 I see the use of AI as=
 an=C2=A0enormous=C2=A0opportunity=C2=A0making, in my case, the difference =
between the possible and the impossible. I agree with Viktor that some caut=
ions are need. In my case, it was crucial to test everything myself.<br><br=
></div><div>That&#39;s my two cents.</div><div><div dir=3D"ltr" class=3D"gm=
ail_signature" data-smartmail=3D"gmail_signature"><div dir=3D"ltr">-- <br>
          Prof. Alfonso R. Zerwekh<br>
          Department of Physics<br>
          Universidad Tecnica Federico Santa Maria<br>
          Skype: azerwekh<br>
          cel: +56996795670</div></div></div><br></div><br><div class=3D"gm=
ail_quote gmail_quote_container"><div dir=3D"ltr" class=3D"gmail_attr">On M=
on, Jul 20, 2026 at 9:49=E2=80=AFAM David Scherfgen via Maxima-discuss &lt;=
<a href=3D"mailto:[email protected]">maxima-discuss@list=
s.sourceforge.net</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote"=
 style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);p=
adding-left:1ex"><div dir=3D"ltr">I agree with you, Viktor, and thanks for =
the words of caution.<div>I&#39;m not letting myself get pushed out of the =
loop. I explicitly instructed Claude to not try to run any code on its own =
or make modifications without my consent.</div><div>The new &quot;Fable&quo=
t; model seems very capable. I&#39;ve thrown entire Maxima modules at it wi=
th the simple task to find potential bugs, and it found lots of them, no ha=
llucinations whatsoever.</div></div><br><div class=3D"gmail_quote"><div dir=
=3D"ltr" class=3D"gmail_attr">Am So., 19. Juli 2026 um 19:40=C2=A0Uhr schri=
eb Viktor T. Toth &lt;<a href=3D"mailto:[email protected]" target=3D"_blank=
">[email protected]</a>&gt;:<br></div><blockquote class=3D"gmail_quote" sty=
le=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);paddi=
ng-left:1ex"><u></u>

 =20
   =20
 =20
  <div>
    <p><font face=3D"monospace">It is indeed awesome that Anthropic does
        this but allow me to offer, from experience, words of caution
        when it comes to &quot;agentic&quot; use of LLMs in development wor=
k.</font></p>
    <p><font face=3D"monospace">I&#39;ve been using LLMs actively as a tool
        since early 2023. The productivity boost is unbelievable. I was
        able to complete things in hours that previously would have
        taken days or weeks, with a result much better in quality than
        anything I&#39;d have created on my own.</font></p>
    <p><font face=3D"monospace">At first, there was of course only one way
        of doing things: ask the AI to write code, add it to your
        project, test it, fix it or ask the AI to fix it. Or maybe ask
        the AI to analyze existing code, especially code with known
        bugs, and offer suggestions to fix or improve it.</font></p>
    <p><font face=3D"monospace">But then, coding agents arrived automating
        much of that. The crucial difference: in conventional prompting,
        it is I, the human, who decide -- after reviewing the code,
        inserting it into the project, testing it -- whether or not the
        code delivers the expected result or behavior. In the agentic
        model, the human is mostly removed from this low-level loop: the
        agent writes the code, tests the code in a sandbox, evaluates
        and revises it without human intervention. The human only sees
        the log and the final result presented for approval. The
        process, though not completely opaque, becomes far less
        transparent.</font></p>
    <p><font face=3D"monospace">This, in my view, is a very dangerous
        slippery slope. Without the mental history of active
        participation, it is impossible to &quot;own&quot; the resulting co=
de. The
        human is no longer acting as a senior developer with LLMs as
        highly capable junior helpers, but more like a project manager
        who evaluates project success not on the basis of actual,
        hands-on experience but on the basis of KPIs on PowerPoint
        slides at the weekly meeting. The difference, of course, is that
        the senior developers working for that project manager are
        themselves experienced. LLMs are not &quot;experienced&quot;. They =
have
        incredible book knowledge, but ultimately that&#39;s all they have:
        their so-called &quot;hallucinations&quot; arise because for an LLM=
, words
        exist only in relationship with other words, not lived
        experience. And all it takes is a slightly misguided, overly
        enthusiastic prompt, for instance, for the LLM to invent a bug
        where none exists, because it seems like a statistically more
        satisfactory response to the prompt than simply confirming that
        a piece of code is valid and requires no change or refactoring.</fo=
nt></p>
    <p><font face=3D"monospace">Long story short, I tried coding agents
        and rejected that approach myself, at least for now. They
        automate the part of my work that needs automation the least, at
        the price of removing me from the very loop that would allow me
        to retain mental ownership of the code that bears my name.
        Especially in the case of a mature project like Maxima, with
        decades-long legacy, written in a nontrivial programming
        language, implementing its own language with notable
        idiosyncrasies, and relying on sophisticated mathematics, I
        worry that the use of LLMs as coding agents, as opposed to
        coding assistants, will lead to trouble.</font></p>
    <p><font face=3D"monospace"><br>
      </font></p>
    <p><font face=3D"monospace">Viktor</font></p>
    <p><font face=3D"monospace"><br>
      </font></p>
    <p><font face=3D"monospace"><br>
      </font></p>
    <p><font face=3D"monospace"><br>
      </font></p>
    <div>On 2026-07-19 10:57, Raymond Toy wrote:<br>
    </div>
    <blockquote type=3D"cite">
     =20
     =20
     =20
      <div>
        <p style=3D"margin-bottom:19.2px;margin-top:0px">On 7/18/26
          11:49 PM, David Scherfgen via Maxima-discuss wrote:<br>
        </p>
        <blockquote type=3D"cite" style=3D"border-color:rgb(119,119,119) rg=
b(119,119,119) rgb(119,119,119) rgb(114,159,207);border-left:2px solid rgb(=
114,159,207);color:rgb(119,119,119);column-rule-color:rgb(119,119,119);marg=
in:19.2px 0px;outline-color:rgb(119,119,119);padding-left:16px;padding-righ=
t:16px;quotes:none;text-decoration-color:rgb(119,119,119);text-emphasis-col=
or:rgb(119,119,119)">
          <div dir=3D"ltr">Dear all,
            <div><br>
            </div>
            <div>Anthropic (the company behind the Claude AI) launched a
              <a href=3D"https://claude.com/contact-sales/claude-for-oss" t=
arget=3D"_blank">programme</a>=C2=A0that allows Open
              Source developers/contributors to apply for 6 months free
              Claude Max 20x, which normally costs $200 per month.</div>
            <div><br>
            </div>
            <div>A friend recommended me to apply for it (I didn&#39;t know
              about it), citing my recent work on Maxima, and indeed I
              got selected! To those</div>
          </div>
        </blockquote>
        Awesome!
        <blockquote type=3D"cite" style=3D"border-color:rgb(119,119,119) rg=
b(119,119,119) rgb(119,119,119) rgb(114,159,207);border-left:2px solid rgb(=
114,159,207);color:rgb(119,119,119);column-rule-color:rgb(119,119,119);marg=
in:19.2px 0px;outline-color:rgb(119,119,119);padding-left:16px;padding-righ=
t:16px;quotes:none;text-decoration-color:rgb(119,119,119);text-emphasis-col=
or:rgb(119,119,119)">
          <div dir=3D"ltr">
            <div>=C2=A0who&#39;ve made significant contributions (see <a hr=
ef=3D"https://www.anthropic.com/claude-for-oss-terms" target=3D"_blank">ter=
ms</a>): I encourage you to
              apply, too. In my application, I mentioned that Maxima
              lives on SourceForge and selected the <a href=3D"https://gith=
ub.com/calyau/maxima" target=3D"_blank">Maxima GitHub mirror</a> as the
              project. If you like, let=C2=A0me know before you apply, then=
 I
              can update the GitHub mirror so that the most recent
              commits are visible there, if that helps you.<br>
            </div>
          </div>
        </blockquote>
        It=E2=80=99s a pain that that can=E2=80=99t be automated AFAIK. I h=
ave some
        projects on gitlab that get automatically mirrored to github
        whenever I check in anything into gitlab. (This is mostly for a
        kind of backup. And also for Claude since gitlab is my canonical
        repo.)
        <blockquote type=3D"cite" style=3D"border-color:rgb(119,119,119) rg=
b(119,119,119) rgb(119,119,119) rgb(114,159,207);border-left:2px solid rgb(=
114,159,207);color:rgb(119,119,119);column-rule-color:rgb(119,119,119);marg=
in:19.2px 0px;outline-color:rgb(119,119,119);padding-left:16px;padding-righ=
t:16px;quotes:none;text-decoration-color:rgb(119,119,119);text-emphasis-col=
or:rgb(119,119,119)">
          <div dir=3D"ltr">
            <div><br>
            </div>
            <div>I&#39;m still getting used to Claude, but I can already sa=
y
              that it&#39;s incredibly powerful and far superior to my
              previous Gemini-based workflow. The best part is that it
              can access code (read &amp; write) and execute commands
              (e.g. run Maxima to test things) locally on your computer.
              I&#39;m still careful with that, though.</div>
          </div>
        </blockquote>
        I=E2=80=99ve been using Claude for a while. It works quite well for=
 me.
        But do be careful. It was hallucinating problems and solutions
        for me, making up things that didn=E2=80=99t actually exist. I
        eventually added a rule that it shouldn=E2=80=99t guess but actuall=
y
        look at the source code and nothing else unless I ask for it.
        <p style=3D"margin-bottom:19.2px;margin-top:0px">I also only
          use the browser version. I didn=E2=80=99t want to give it access =
to
          any of my actual machines or to modify any code. This works
          fine except I have to download and apply suggested changes.
          But I since I have gitlab mirrored, it can fetch the latest
          github code to see what I did and and what=E2=80=99s next.</p>
        <blockquote type=3D"cite" style=3D"border-color:rgb(119,119,119) rg=
b(119,119,119) rgb(119,119,119) rgb(114,159,207);border-left:2px solid rgb(=
114,159,207);color:rgb(119,119,119);column-rule-color:rgb(119,119,119);marg=
in:19.2px 0px;outline-color:rgb(119,119,119);padding-left:16px;padding-righ=
t:16px;quotes:none;text-decoration-color:rgb(119,119,119);text-emphasis-col=
or:rgb(119,119,119)">
          <div dir=3D"ltr">
            <div><br>
            </div>
            <div>Do you have suggestions for new features that I might
              try to tackle during these 6 months? Of course I can also
              keep fixing bugs,=C2=A0or both.</div>
          </div>
        </blockquote>
        Both, of course! But it=E2=80=99s up to you.
        <p style=3D"margin-bottom:19.2px;margin-top:0px">There are
          personal projects I wanted to do but haven=E2=80=99t really made =
any
          progress. One big one was support for theta functions. A long
          time ago, I (or this list?) got a screenshot from Bill Gosper
          (yes, that Bill) about the work he had done with theta
          functions. Really impressive. Even had the code, but so much
          of was in lisp on real Macsyma so I never figured out what
          those functions actually did. I think he also sent some nice
          algorithms for computing 2F1 over the entire plane. Barton has
          solved this using a different approach, I think.</p>
      </div>
      <div style=3D"height:0px;width:0px;max-height:0px;max-width:0px;overf=
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0iZmFsc2UiIHBvcG92ZXI9ImF1dG8iPjwvdWw+">&amp;#8203;</div>
      <br>
      <fieldset></fieldset>
      <br>
      <fieldset></fieldset>
      <pre>_______________________________________________
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</pre>
    </blockquote>
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