PXT · AI Consulting Built by engineers since 2007
Custom AI & LLM Solutions · Pillar 03

Off-the-shelf hits a wall. We pick up there.

When ChatGPT can't read your documents. When your support bot needs to know your product. When your internal tool needs to reason across systems. We build the layer on top of LLMs that makes them actually useful: production-grade, owned by you, integrated with what you already run.

A foundation model knows the internet.
It doesn't know your business.

ChatGPT can write a poem about your industry. It can't tell you which of your 12,000 SKUs to recommend to a customer who just emailed asking for a replacement. It doesn't know your pricing rules, your support history, your contract terms, your domain quirks.

Custom AI is the work of giving an LLM the context, the data, and the guardrails to do something specific: well, repeatably, and at scale. That's the work we do.

The six things we build, and what they actually do.

Six things we build. Hundreds of variations.

Custom chatbots & copilots

Customer-facing bots that actually know your product, pricing, and policies. Internal copilots that pull from your wikis, code, or knowledge base.

RAG / knowledge systems

Retrieval-augmented generation over your documents, support tickets, contracts, internal wikis, or any corpus. Searchable, citable, governable.

Embedded AI features

AI baked into your existing app: summarization, classification, generation, recommendation. Built to scale with your traffic, not break under it.

Agentic systems

Multi-step AI agents that take actions across systems: read an email, check a database, draft a response, send it, log the result. With humans in the loop where they belong.

Voice & call analysis

Transcription, summarization, scoring, and coaching insights from sales calls, support calls, or operations audio.

Document intelligence

OCR + LLM pipelines that pull structured data out of contracts, forms, statements, and scans, including bad scans, handwritten notes, and edge cases generic OCR misses.

What we don't build, and why.

We're specific about what we don't do, because clarity on that is how you know we're honest about what we do.

Rule · 01

We don't train foundation models.

Training a base model from scratch takes a hundred-million-dollar GPU cluster and a research team. That's not us, and it's not what 99% of businesses need. We use the best foundation models on the market and add the layer that makes them yours.

Rule · 02

We don't sell you a "proprietary AI platform."

You won't sign a five-year contract for our SaaS. Everything we build runs on standard infra, owns standard models, and is yours to take to another vendor if we ever stop earning the work.

Rule · 03

We don't build AI features that aren't ready for production.

If a use case has a 60% success rate with current models, we'll tell you that, and recommend waiting, narrowing the scope, or solving it without AI.

The pipeline behind every
production-grade custom AI build.

The model is the smallest part. The retrieval layer is what knows your data. The orchestration layer is where the business logic lives. The evaluation layer is what makes it safe to ship. We build all four because skipping any one of them is how AI projects break in production.

Your data
Docs, tickets, DBs, APIs
Retrieval
Vector + structured
Orchestration
Prompts, tools, guardrails
LLM
Best model for the job
Evaluation
Feedback loop & safety
Your UI
App, API, or agent

87% reduction in document processing time. 14-person queue replaced. 3-week build.

Andrew F., Head of Product, Logistics SaaS company · Live for 9 months

Four phases.

Four phases. Working software in 8 weeks.

01 Week 1 · Free

Scoping

We sit with you, understand the use case, look at the data, and decide whether the project is worth doing. If it's not, we tell you. If it is, you get a phased proposal with a budget cap on each phase.

02 Week 2-3

Prototype

A working version on your data, evaluated on real cases. We demo it every week. Most projects get cancelled or expanded based on what we find here, and that's a feature, not a bug.

03 Week 4-8

Production build

Hardening, integrations, evaluation harness, deployment, monitoring. The boring 70% of the project that 90% of AI agencies skip.

04 Hand-off

Hand-off

Your team can run, monitor, and extend the system. Documentation, training, runbooks. We're available after, but you don't need us.

Custom pricing. Hard caps. No surprises.

Custom AI Build
Starts at $15,000
6-12 weeks typical

Most production builds run $15,000-$75,000 depending on scope, integrations, and data complexity. Scoping phase is free. Build phase runs against a budget cap, billed weekly against actual work, with phase-gate stop points where you can pause, continue, or end.

Scoping phase is free · No commitment required

Scoping
Free, 1 week
Billed
Weekly against cap
Overruns
Never without sign-off
Ownership
100% yours
Stop points
After every phase
Evaluation
Harness on every build

The questions that matter before you say yes.

Will you build us our own foundation model?
No, and you don't need one. The right answer for almost every SMB is to use a top-tier hosted model and build the retrieval, orchestration, and evaluation layers on top.
Whose data is whose?
Yours is yours. We turn off model-provider data retention, sign a data-processing agreement (DPA), and can run the whole thing inside your own cloud (your VPC).
What happens when the underlying model gets better?
Your system gets better with it. We build with model abstraction so you can swap models without a rebuild.
How do you measure quality?
Every project gets an evaluation harness. Real test cases, real metrics, run on every change.
One use case. One scoping call. One honest answer.

One use case.
One scoping call.
One honest answer.

Tell us the problem. We'll tell you whether AI solves it, and if it does, what that actually costs and looks like.

Scoping call is free · No commitment · No sales pressure