ZECH
AI Development · Build

Generative AI applications that are grounded, tested and affordable to run.

We build on large language models (LLMs) for drafting, summarization, extraction and reasoning tasks — choosing the right model, grounding it in your sources, and measuring quality and cost before anything reaches users.

What we deliver
  • Use-case and output specification
  • Model selection report
  • Grounding and prompt layer
  • Evaluation harness
  • Production service
Tools & platforms
Anthropic, OpenAI and open-weight modelsPythonTypeScriptVector search in Postgres (pgvector)OpenTelemetry

Where this helps

Impressive demo, unreliable output
The prototype writes fluent text, but it invents details, ignores your style rules and gives different answers to the same question. Nobody trusts it enough to use it for real work.
No idea what it will cost at scale
A proof of concept used the largest model for everything. Multiplied across real traffic, the monthly bill becomes a reason to cancel the project.
Locked into one provider
Prompts, tooling and data flows are written around a single vendor's API, so switching models to save cost or improve quality means rebuilding.

What we deliver

01
Use-case and output specification
A precise description of inputs, expected outputs, tone, format and failure cases, with example pairs agreed by the people who will use the result.
02
Model selection report
Candidate models compared on your own examples for quality, latency and cost, with a recommendation and a fallback option.
03
Grounding and prompt layer
Prompts, structured output schemas and retrieval of your source material, versioned and kept separate from application code so they can change safely.
04
Evaluation harness
Automated and human-reviewed test sets that score accuracy, format compliance and safety, run on every change to prompts or models.
05
Production service
An API or embedded feature with rate limiting, caching, content filters, logging and cost tracking, deployed in your environment or ours.

How it works

  1. 01

    Define the task

    We collect real examples of the inputs and the outputs your experts consider good, and agree how quality will be judged.

  2. 02

    Compare approaches

    Several models and prompting strategies are tested against the examples. Where retrieval or fine-tuning is needed, we say so with evidence.

  3. 03

    Build the application

    We implement the prompt, grounding and output handling inside a service that fits your architecture and security requirements.

  4. 04

    Evaluate and red-team

    The system is tested on edge cases, adversarial inputs and known failure modes until it meets the agreed bar.

  5. 05

    Launch and tune

    Release to a limited group, collect feedback and review logs, then adjust prompts, routing and caching to improve quality and cost.

Design decisions we make with you

  • Model and hosting

    Hosted API, cloud provider endpoint or open-weight model in your infrastructure — chosen per task based on quality, data sensitivity and cost.

  • Prompting, retrieval or fine-tuning

    Most tasks are solved with good prompting plus retrieval. We only recommend fine-tuning when tests show it is needed. See [model adaptation](/ai-services/model-adaptation).

  • Structured versus free output

    Where output feeds another system, we constrain it to a schema and validate it, rather than parsing free text.

  • Cost controls

    Model routing, prompt caching, output length limits and batching keep per-request cost predictable and visible.

  • Ownership and portability

    You own the prompts, test sets and code. An abstraction over model providers keeps switching practical.

Questions buyers ask

We ground answers in your source material, require citations where possible, constrain output formats, and test for unsupported claims. For high-stakes output, a person reviews before anything is sent or saved.

It depends on the task, your data sensitivity and budget. We test candidates on your own examples and recommend one, with a cheaper or more private alternative where it makes sense.

Often, yes — through private cloud endpoints or open-weight models in your environment. The tradeoffs are covered on our Enterprise & Private AI page.

Models and usage change over time. We monitor quality and cost, rerun evaluations when providers update models, and can hand operations to your team or run them under an agreed support scope.

Discuss this capability with an engineer.

Tell us about the workflow or product. We reply with questions, a suggested first step and who would work on it.