Custom builds

Bespoke agents, on your data, in your control.

When the use case is too specific for a vendor and too important to get wrong — we build from the model upward.

Not every problem has a SaaS answer. Sometimes you need an agent trained on your knowledge base, running on your infrastructure, with guardrails specific to your risk profile. That's the work we love most.

All services

How it runs

The agent sits between your signals and your actions.

arthat / custom-agent-console
Live
Runs today
0
+18%
Deflection
0%
+4.2%
Avg CSAT
0/5
Cost/run
$0.0
-12%
Agent activity
last 12 min
  • 00:12DriveOpened ticket #8941 — retrieved 4 policy docs
  • 00:11ClaudeDrafted response cited 3 KB articles
  • 00:11StripeRefund initiated for order #22318
  • 00:10SlackEscalated to human — low confidence on delivery ETA
  • 00:09GmailClosed ticket #8940 after confirmation
  • 00:08OpenAIRan nightly eval — 94.2% accuracy vs golden set

What we automate

Here’s what usually lives inside an engagement.

  • Custom agents fine-tuned on your domain knowledge
  • RAG systems (retrieval-augmented generation) over your proprietary data
  • Private LLM deployments — on your cloud, no data leaving your infrastructure
  • Multi-agent systems with specialist roles and handoffs
  • Embedded agents inside your product (SDK + UI components)
  • Evaluation pipelines — so you know when the model regresses

Audience

Who this is for

CTOs at data-sensitive companies

You can't send customer data to a third-party model. You need this on your VPC.

Product teams embedding AI

You need an agent inside your product, not a chatbot on the side.

Operators with specific edge cases

Every SaaS AI tool solves your problem 80%. You need the other 20%.

Typical outcomes

What this changes

Live in production
0%

Typical accuracy on evaluation sets at launch

Live in production
0

Data leaves your environment on private deployments

Live in production
Eval

Automated regression tests on every model version

Live in production
0 wks

Median time to production-grade v1

Comparison

How we're different

Criterion
Off-the-shelf SaaS
OpenAI assistants
Arthat custom
Runs on your infrastructure
Trained on your proprietary data
Handles your specific edge cases
Full evaluation suite
You can swap models without rewriting
abstracted provider

Tool stack

Built on the tools you already use

We build on the tools your team already uses — no rip-and-replace.

OpenAI
Anthropic
Gemini
Mistral
Hugging Face
NVIDIA
Supabase
GitHub
Notion
OpenAI
Anthropic
Gemini
Mistral
Hugging Face
NVIDIA
Supabase
GitHub
Notion
OpenAI
Anthropic
Gemini
Mistral
Hugging Face
NVIDIA
Supabase
GitHub
Notion
OpenAI
Anthropic
Gemini
Mistral
Hugging Face
NVIDIA
Supabase
GitHub
Notion

How we work

Four phases. Nothing hidden.

1. Use-case design

We scope exactly what the agent will do, what it won't, and how we'll measure success before any code is written.

2. Data layer

Ingestion, chunking, embedding, and retrieval — the boring work that decides whether RAG actually works.

3. Agent & eval

We build the agent loop, prompts, tool calls, and the evaluation harness alongside. No blind deploys.

4. Deploy in your env

AWS, GCP, Azure, or on-prem. We bring up monitoring, logging, and runbooks.

FAQ

Questions we get a lot

Ready to automate the work that’s slowing you down?

Book a 30-minute discovery call. We’ll listen, scope, and tell you honestly whether AI is the right tool for the job.

See our work first