AI products that survive the jump from demo to production.

We architect full-stack AI platforms — RAG, agents, evals, and the boring infrastructure underneath — so the product still works at week fifty, not just week one.

Live · prod-east-1
Query · vector retrieval
“What’s the cancellation policy?”
1,547 chunks indexed4 matched · 142ms
40%faster contract creation
4 wkspilot to production
100%code you own, no lock-in
The problem

Why most AI platforms die at week twenty.

The demo works. The pilot impresses. Then real users arrive and the RAG hallucinates, the agent forgets context, latency triples, and the dashboard nobody built starts mattering. Building the demo is the easy part. We build for the part that breaks — eval frameworks, retrieval testing, observability, and the boring auth and access-control work that decides whether you actually get to scale.

Production telemetry · sample3 incidents
01 · Fail·HALLUCINATION
CRIT

Returned citation [3] for “30-day refund” but the source mentions no refund policy.

confidence:0.94·contract-v2.pdf
02 · Fail·CONTEXT_LOSS
WARN

Agent forgot “second party” reference after turn 12 of the conversation.

tokens:53K·session-88af2
03 · Fail·EVAL_REGRESSION
CRIT

Pass rate dropped 29pp on contract-amend.eval after the model upgrade.

pass rate:67%·deploy #248
What we ship

Four shapes, one engineering team.

01

RAG knowledge platforms

Indexed, citation-backed knowledge platforms grounded in your data. Hybrid retrieval, re-ranking, and adversarial evals before every deploy.

See case study
02

Agentic workflows

Tool-using agents with human-in-the-loop gates for research, ops, and back-office. Plan, act, observe, route to a human when it matters.

03

AI copilots inside SaaS

Embed AI into an existing product without breaking the existing UX. Inline drafts, summaries, queries — with the right guardrails.

04

Vertical AI products

Domain-specific AI for legal, healthcare, fintech, and recruiting. Compliance-aware, schema-mapped, production-grade.

Why Zaibex

Side-by-side with a typical agency.

We don’t outbid the cheap shops, and we don’t pretend to be McKinsey. Here’s where the real practical difference lives.

Typical agency
Zaibex
Junior dev assigned after kickoff
Senior engineer owns end-to-end
Demo built, evals skipped
Adversarial evals before every deploy
$40K MVP, 12-week timeline
$5K–$30K, 4–8 weeks to production
Hourly billing, scope creep
Fixed-price per phase, scoped on day one
Hands off after launch
On-call + monthly retainer for monitoring
Built on a vendor’s closed platform
Open stack you can host yourself
The stack

The exact tools and why we chose them.

No mystery stack, no platform lock-in. You see what we use, you read why, and you own the keys on day one.

01 · LLM
Claude · OpenAI

We pick per task and hot-swap. Claude for instruction-following, OpenAI for speed.

02 · Vector + DB
Postgres + pgvector

One database for vectors, BM25, and your domain — no separate Pinecone bill.

03 · Orchestration
LangChain · LangGraph

Stateful agents with checkpoints and human-in-the-loop primitives.

04 · Eval framework
Custom + Braintrust

Adversarial regression tests on real samples before every deploy.

05 · Frontend
Next.js · TypeScript

Streaming, RSC, edge-deployable — the product’s interface, not just the chat box.

06 · Cloud
GCP · AWS · Vercel

You pick your cloud. We don’t bind you to ours.

The process

Discover · Architect · Build · Ship.

Four stages, named timelines, named deliverables. No open-ended discovery. No moving goalposts.

01·3–5 days

Discover

We map your domain, data sources, and the failure modes that actually matter to your users.

  • Domain + data map
  • Failure-mode inventory
  • Eval scenarios
02·1 week

Architect

We design retrieval, evals, guardrails, and the surface area users actually touch.

  • Architecture diagram
  • Eval suite
  • Guardrails policy
03·3–6 weeks

Build

We ship the platform in tested slices, evaluating against the eval suite at every cut.

  • Working platform
  • Eval pass rate >95%
  • Observability dashboards
04·1 day cutover

Ship

Production cutover with hyper-care. We’re on-call for the first 72 hours, on retainer thereafter.

  • Production cutover
  • Runbook + SLAs
  • Monthly eval report
In production

Real numbers, named client.

40%faster contract creation, with citation-backed answers
AI legal contract platform
Read the full case study
The problem

A legal-tech founder needed contract analysis to be both fast and trustworthy. Off-the-shelf chatbots hallucinated; manual review took hours.

Our approach

We built a hybrid Postgres + pgvector retrieval system on Next.js with citation enforcement, eval-driven prompt tuning, and a contract-aware UI.

The outcome

40% faster contract creation. Citation-grounded answers users can verify. Built in 6 weeks, in production today.

Pricing & timeline

Fixed price. Fixed scope. Public ranges.

We don’t hide pricing behind a sales call. Pick the tier that matches your stage. The discovery call confirms scope, not budget.

Pilot
$5K
4 weeks
  • RAG MVP on one knowledge source
  • Citation enforcement + custom retrieval
  • Eval framework with regression tests
  • Production deployment on your cloud
  • 3 months of post-launch support
Custom
Let's talk
Tailored to scope
  • Fully customized to your domain
  • Senior engineer owns the engagement
  • Multi-source retrieval, agents, integrations
  • Ongoing optimization and on-call
Honest answers

The questions we actually hear on calls.

How long does an AI platform take to build?

A focused RAG MVP ships in 4 weeks. A full multi-source production platform with integrations ships in 6–10 weeks. We don’t take 12-week projects without naming them as such.

How do you keep the AI from hallucinating?

Three things: retrieval-first prompting with citation enforcement, an eval suite that runs adversarial scenarios before every deploy, and a fallback policy when confidence drops. We test it the way users will break it.

What if we already have a database, CRM, or data warehouse?

Better. We connect to your existing data through APIs or direct queries. We’ve integrated with Postgres, Snowflake, BigQuery, Salesforce, HubSpot, and bespoke internal APIs.

Can we host this ourselves?

Yes. We default to your cloud (AWS, GCP, Azure, Vercel) and your API keys. No lock-in. You own the code from day one.

Does this need an ML team?

No. We don’t train models — we use frontier LLMs from Claude and OpenAI. The expertise is in retrieval, evals, prompts, fallbacks, observability — engineering work, not data science.

What does the monthly retainer cover?

24/7 on-call for production incidents, monthly eval reports with regression tests on real samples, and continuous improvement based on usage. It’s how the platform keeps getting better — not a maintenance fee.

Ready when you are

Most AI projects fail not at the demo, but at the third sprint after launch — when real users find the edges. We build for that sprint. Eval-first, retrieval-grounded, fallback-aware, in production.