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Docs bots like these are deceptively hard to get right in production. Retrieval is super sensitive to how you chunk/parse documentation and how you end up structuring documentation in the first place (see frontpage post from a few weeks ago: https://news.ycombinator.com/item?id=44311217).

You want grounded RAG systems like Shopify's here to rely strongly on the underlying documents, but also still sprinkle a bit of the magic of the latent LLM knowledge too. The only way to get that balance right is evals. Lots of them. It gets even harder when you are dealing with GraphQL schema like Shopify has since most models struggle with that syntax moreso than REST APIs.

FYI I'm biased: Founder of kapa.ai here (we build docs AI assistants for +200 companies incl. Sentry, Grafana, Docker, the largest Apache projects etc).

Why do you say “deceptively hard” instead of “fundamentally impossible”? You can increase the probability it’ll give good answers, but you can never guarantee it. It’s then a question of what degree of wrongness is acceptable, and how you signal that. In this specific case, what it said sounds to me (as a Shopify non-user) entirely reasonable, it’s just wrong in a subtle but rather crucial way, which is also mildly tricky to test.
Why RAG at all?

We concatenated all our docs and tutorials into a text file, piped it all into the AI right along with the question, and the answers are pretty great. Cost was, last I checked, roughly 50c per question. Probably scales linearly with how much docs you have. This feels expensive but compared to a human writing an answer it's peanuts. Plus (assuming the customer can choose to use the AI or a human), it's great customer experience because the answer is there that much faster.

I feel like this is a no-brainer. Tbh with the context windows we have these days, I don't completely understand why RAG is a thing anymore for support tools.

Indeed. Dabbling in 'RAG' (which for better or worse has become a tag for anything context retrieval) for more complex documentation and more intricate questions, you will very quickly realize that you really need to go far beyond simple 'chunking', and end up with a subsystem that constructs more than one very intricate knowledge graphs for supporting different kinds of questions the users might ask. For example: a simple question such as "What exactly is an 'Essential Entity'? is better handled by Knowledge Representation A as opposed to "Can you provide a gap and risk analysis on my 2025 draft compliance statement (uploaded) in light of the current GDPR, NIS-2 and the AI Act?"

(My domain is regulatory compliance, so maybe this goes beyond pure documentation but I'm guessing pushed far enough the same complexities arise)

We're going to see increasingly more of these, and it's going to cause a big scandal at one point, that pops the current AI bubble. It's really obvious that you can't use non-deterministic systems this way but companies are hellbent on doing it anyway. This is why I won't take a role to implement "AI" in an existing product.
I don’t understand why people seem to be attacking the “non-determinism” of LLMs. First, I think most people are confusing “probabilistic” with “non-deterministic” which have very distinct meanings in CS/ML. Non-deterministic typically entails following multiple paths at once. Consider regex matching with NFAs or even the particular view of a list as a monad. The only case where LLMs are “non-deterministic” is when using sampling algorithms like beam search where multiple paths are considered simultaneously. But most LLM usage being discussed doesn’t involve beam search.

But even if one assumes people mean “probabilistic”, that’s also an odd critique given how probabilistic software has pretty much eaten the world. Most of my career has been building reliable product using probabilistic models.

Finally, there’s nothing inherently probabilistic or non-deterministic about LLM generation, these are properties of the sampler applied. I did quite a lot of LLM benchmarking in recent years and almost always used greedy sampling both for performance (doing things like GSM8K strong benefits from choosing the maximum likely path) and reproducibility. You can absolutely set up LLM tools that have perfectly reproducible results. LLMs have many issues but their probabilistic nature is not one of them.

There was an article on hackernews a few years back (before LLMs took over) about jobs that could be replaced by a sign saying "$default_result" 99% of the time.

Like being a cancer diagnostician. Or an inspector at a border crossing.

Using LLMs is currently a lot like going to a diagnostian that always responds "no, you're healthy". The answer is probably right. But still we pay people a lot to get that last 1%.

I think you're being overly (and incorrectly) pedantic about the meaning of "non-deterministic" -- you're applying the fairly niche definition of the term as used on finite automata, when the people you're refuting are using it in the sense of https://en.wikipedia.org/wiki/Nondeterministic_algorithm: "In computer science and computer programming, a nondeterministic algorithm is an algorithm that, even for the same input, can exhibit different behaviors on different runs, as opposed to a deterministic algorithm." I think this usage of the term is more common than the finite automata sense. Dictionary.com doesn't have non-deterministic, but its (relevant) definition of deterministic is "of or relating to a process or model in which the output is determined solely by the input and initial conditions, thereby always returning the same results": https://www.dictionary.com/browse/deterministic

Under that definition of (non-)deterministic, ironically, an NFA is deterministic, because it always produces the same result for the same input.

It's not entirely unrelated, the fact that the system is non-deterministic means that it necessarily is probabilistic.

A business can reduce temperature to 0 and choose a specific seed, and it's the correct approach in most cases, but still the answers might change!

On the other hand, it's true that there is some probability that is independent of determinism, for example maybe changing the order of some words might yield different answers, this might be a deterministic machines, but there's millions of ways to frame a question, if the answer depends on trivial details of the question formatting, there's a randomness there. Similar to how there is randomness in who will win a chess match between two equally rated players, despite the game being deterministic.

Reminds me of when I asked Gemini how to do some stuff in Google Docs App Script, and it just hallucinated the capability and code to make it work. Turns out what I wanted to do isn't supported at all.

I feel like we aren't properly using AI in products yet.

I asked about a nieche json library for c. It apparently wasn't in the training data so it just invented how it feels like a json library would work.

Ive also had alot of issues with cmake that it just invents syntax and functions. Every new question has to be made in a new chat context to clear the context poisoning.

Its the things that lack good docs i want to ask about. But that's where its most likley to fail.

Yet Google raised my workspace subscription cost by 25% last night because our current agreement is suddenly unworthy of all the new “ai value” they’ve added… value I didn’t even know existed until I started paying for it. I don’t even want to know what isis supposed to be referencing… I just want to dump it asap.
The tool we use for our docs AI answers lets you mine that data for feature requests. It generates a report of what it didn't have answers for and summarizes them as potential feature gaps. (Or at least what it is aware it didn't have answers for).

People seem more willing to ask an AI about certain things then be judged by asking the same question of a human, so in that regard it does seem to surface slightly different feature requests then we hear when talking to customers directly.

We use inkeep.com (not affiliated, just a customer).

I’ve found LLMs (or at least everyone I’ve tried this on) will always assume the customer is correct and thus even if they’re flat out wrong, the LLM will make up some bullshit to confirm the costumer is still correct.

It’s great when you’re looking to do creative stuff. But terrible when you’re looking to confirm the correctness of an approach or asking for support on something that you weren’t even aware of its nonexistence.

> I feel like we aren't properly using AI in products yet.

Very similar sentiment at the height of the crypto/digital currency mania

To be fair, for me at least, that weird chat bot only appears on https://help.shopify.com/ while the technical documentation is on shopify.dev/.

Everytime I land on help.shopify.com I get the feeling it's one of those "Doc pages for sales people". Like it's meant to show "We have great documentation and you can do all these things" but never actually explains how to do anything.

I tried that bot a couple of months ago and it was utterly useless:

question: When using discountRedeemCodeBulkAdd there's a limit to add 100 codes to a discount. Is this a limit on the API or on the discount? So can I add 100 codes to the same discount multiple times?

answer: I wasn't able to find any results for that. Can you tell me a little bit more about what you're looking for?

Telling it more did not help. To me that seemed like the bot didn't even have access to the technical documentation. Finding it hard to believe that any search engine can miss a word like discountRedeemCodeBulkAdd if it actually is in the dataset: https://shopify.dev/docs/api/admin-graphql/latest/mutations/...

So it's a bit like asking sales people technical questions.

edit: Okay, I should have tried that before commenting. They seem to have updated it. When I ask the same question now it answers correctly (weirdly in German) :

Die Begrenzung von 100 Codes bei der Verwendung von discountRedeemCodeBulkAdd bezieht sich auf die Anzahl der Codes, die Sie in einem einzelnen API-Aufruf hinzufügen können, nicht auf die Gesamtanzahl der Codes, die einem Rabatt zugeordnet werden können. Ein Rabattcode kann bis zu 20.000.000 eindeutige Rabattcodes enthalten. Daher können Sie mehrfach jeweils 100 Codes zum selben Rabatt hinzufügen, bis Sie das Limit von 20.000.000 Codes erreicht haben. Beachten Sie, dass Drittanbieter-Apps oder benutzerdefinierte Lösungen dieses Limit nicht umgehen oder erhöhen können.

~= It's a limit on the API endpoint, you can add up to 20M to a single discount.

> weirdly in German

I keep seeing bots wrongly prompted with both the browser language and the text "reply in the user's language". So I write to a bot in English and I get a Spanish answer.

> So it's a bit like asking sales people technical questions.

Maybe that's the best anthropomorphic analogy of LLMs. Like good sales people completely disconnected from reality, but finely tuned to give you just the answer you want.

to be fair?
This is a great example of the kind of question I'd love to be able to ask these documentation bots but that I don't trust them to be able to get right (yet):

> What’s the syntax, in Liquid, to detect whether an order in an email notification contains items that will be fulfilled through Shopify Collective?

I suspect the best possible implementation of a documentation bot with respect to questions like this one would be an "agent" style bot that has the ability to spin up its own environment and actually test the code it's offering in the answer before confidently stating that it works.

That's really hard to do - Robin in this case could only test the result by placing and then refunding an order! - but the effort involved in providing a simulated environment for the bot to try things out in might make the difference in terms of producing more reliable results.

get a second agent to validate the return from the first agent. but it might get it wrong because reasons, so you need a third agent just to make sure. and then a fourth. and so on. this is obviously not a working direction.
At CURRENT_CO we're going through another evaluation of several LLM bots you can add into your docs or Slack etc.

We've done three trials since 2023 and each time we've found them not good enough to put in front of our customers.

Usually the distribution has been about 60% good answers, 20% neutral to bad, 20% actively harmful that wastes the user's time.

Really hoping we'll see better results this time but so far nothing has beat the recommendation to add our docs to your local LLM IDE of choice (Cursor etc) and then ask it questions with your own codebase as context.

> so I did my customary dance of order-refund, order-refund, order-refund. My credit card is going to get locked one of these days.

I don't know the first thing about Shopify, but perhaps you can create a free "test" item so you don't actually need to make a credit card transaction.

You elided the part where TFA claims you can't test "unconventional email formats" via test orders. The full quote is:

Shopify doesn’t pro­vide a way to test uncon­ven­tional email for­mats without actu­ally placing real orders, so I did my cus­tomary dance of order-refund, order-refund, order-refund. My credit card is going to get locked one of these days.

The person who wrote the above knows a lot about Shopify, so if you're going to contradict them, it'd be nice to point to some evidence as to why you think they're wrong.

Need a real CC to test. Right there makes me lose respect for shopify if true. Even stripe let's you test :)
Not sure if I'm missing something but the way I'd always test orders is generate some 100% discount. You don't need any payment info then. I only ever needed a CC if I wanted to actually test something relating to payment. And on test stores you can mock a CC
The doc bot goes in the same category as asking a human who has read the docs. In order of helpfulness you could get:

- "Oh yeah just write this," except the person is not an expert and it's either wrong or not idiomatic

- An answer that is reliably correct enough of the time

- An answer in the form "read this page" or quotes the docs

The last one is so much better because it directly solves the problem, which is fundamentally a search problem. And it places the responsibility for accuracy where it belongs (on the written docs).

I think the name, doc-bot, is just bad (actually I don’t know what Shopify even calls their thing, so maybe the confusion is on the part of the author of the post, and not some misleading thing from Shopify). A bot like that could fulfill the role of the community forum, which certainly isn’t nothing! But of course it isn’t the documentation.
Working with Shopify is an example of something where a good mental model of how it works under the hood is often required. This type of mistake, not realising that the tag is added by an app after an order is created and won't be available when sending the confirmation email, is an easy one to make, both for a human or an LLM just reading the docs. This is where AI that just reads the available docs is going to struggle, and won't replace actual experience with the platform.
The core argument here is: LLM docbots are wrong sometimes. Docs are not. That's not acceptable.

But that's not true! Docs are sometimes wrong, and even more so if you could errors of omission. From a users perspective, dense / poorly structured docs are wrong, because they lead users to think the docs don't have the answer. If they're confusing enough, they may even mislead users.

There's always an error rate. DocBots are almost certainly wrong more frequently, but they're also almost certainly much much faster than reading the docs. Given that the standard recommendation is to test your code before jamming it in production, that seems like a reasonable tradeoff.

YMMV!

(One level down: the feedback loop for getting docbots corrected is _far_ worse. You can complain to support that the docs are wrong, and most orgs will at least try to fix it. We, as an industry, are not fully confident in how to fix a wrong LLM response reliably in the same way.)

Docs are reliably fixable, so with enough effort they will converge to correctness. Doc bots are not and will not.
> There's always an error rate. DocBots are almost certainly wrong more frequently, but they're also almost certainly much much faster than reading the docs.

A lot of the discourse around LLM tooling right now boils down to "it's ok to be a bit wrong if you're wrong quickly" ... and then what follows is an ever-further bounds-pushing on how big "a bit" can be.

The promise of AI is "human-level (or greater)" --- we should only be using AI when it's as accurate (or more accurate) as human-generated docs, but the tech simply isn't there yet.

There is also https://gurubase.io/ Which is sometimes used as a kind of talk with the documentation, it claims to validate the response somehow
If you're using an LLM and you are surprised it makes things up, I don't know who to blame?

The overblown claims? The systems prompt "team" that ensure "I don't know" can never be uttered? Or user expectations?

I find it unfair to blame users, but I tend to think creating a system prompt that accentuates "with an air of certainty" over ... straightforward honesty, both telling of the org culture, and the wider trend of "look like you know"...

it's lossy docs.

docs with JPEG artifacts, the more you zoom, the more specific your query, the worse the noise becomes

I would guess these narrow docs bots probably perform worse than ChatGPT et al in 'search' mode
Placing live orders on your card is a violation of Shopify, Shopify merchant, and card holder terms..
It's probably docs... If it can hallucinate an answer, it's docs with probably the most infuriating UX one can imagine.

I remember being taught that no docs is better (i.e. less frustrating to the user) than bad/incorrect docs.

"Documentation - or, as I like to call it, lies."

After a certain number of years you learn that source code comments so often fall out of synch with the code itself that they're more of a liability than an asset.

sounds like a good time to plug install.md (precise step-by-step docs / guides as MCP, with simple RAG) - which I think is the right direction when paired with coding agents.
I mean that's the dirty secret of any RAG chatbot. The concept of "grounding" is arbitrary. It doesn't matter if you use embeddings, or use a tool that uses your usual search and gets the top items, like most web search tools or google's. Is still relies on the model to not hallucinate given this info, which is very hard since too much info -> model gets confused, but too little info -> model assumes the info might not be there so useless. The fine balance depends on the user's query, and all approaches like score cutoff for embeddings etc just don't generalize.

This is the same exact problem in coding assistants when they hallucinate functions or cannot find the needed dependencies etc.

There are better and more complex approaches that use multiple agents to summarize different smaller queries and then iteratively buildup etc, internally we and a lot of companies have them, but for external customer queries, way too expensive. You can't spend 30 cents on every query

nots
Confused. I just tried it in the Shopify Assistant and got:

There is no built-in Liquid property to directly detect Shopify Collective fulfillment in email notifications.

You can use the Admin GraphQL API to programmatically detect fulfillment source.

In Liquid, you must rely on tags, metafields, or custom properties that you set up yourself to mark Collective items.

If you want to automate this, consider tagging products or orders associated with Shopify Collective, or using an app to set a metafield, and then check for that in your Liquid templates.

What you can do in Liquid (email notifications):

If Shopify exposes a tag, property, or metafield on the order or line item that marks it as a Shopify Collective item, you could check for that in Liquid. For example, if you tag orders or products with "Collective", you could use:

  {% if order.tags contains "Collective" %}
    <!-- Show Collective-specific content -->
  {% endif %}
or for line items:

  {% for line_item in line_items %}
    {% if line_item.product.tags contains "Collective" %}
      <!-- Show something for Collective items -->
    {% endif %}
  {% endfor %}
In the author's 'wrong' vs 'seems to work' answer, the only difference is the tag on the line items vs, the order. The flow (template? as he refers to it as 'some other cryptic Shopify process' ) he uses in his tests does seem to add the 'Shopify Collective' tag to the line items, and potentially also to the order if the whole order is Shopify Collective fullfilled, but without further info we can only guess his setup.

While using AI can always lead to non-perfect results, I feel the evidence presented here does not support the conclusion.

P.S. Given the reference to 'cryptic Shopify processes', I wonder how far the author would get with 'just the docs'.

So because you got a good response the conclusion is invalid? How does the user know if they got a good response or a bad one? Due to the parameters passed most LLMs are functionally non-deterministic, rarely giving the same answer twice even with the same question.

I just asked chatgpt "whats the best database structure for a users table where you have users and admins?" in two different browser sessions. One gave me sql with varchars and a role column using:

    role VARCHAR(20) NOT NULL CHECK (role IN ('user', 'admin')),
the other session used text columns and defined an enum to use first:

    CREATE TYPE user_role AS ENUM ('user', 'admin', 'superadmin');
    //other sql snipped
    role user_role NOT NULL DEFAULT 'user',
An Ai Assistant should be better tuned but often isn't. That variance to me makes it feel wildly unhelpful for 'documentation' as two people end up with quite different solutions.
I think you're making the author's point, though. If two users ask the bot the same question and get different answers, is the bot valuable? A dice roll that might be (or is even _probably_) correct is not what I want when going directly to the official docs.
its non-deterministic. it gives different answers each time you ask, potentially, and small differences in your prompt yields different completions. it doesnt actually understand your prompt, you know.