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AI & Smart Systems

LLM Application Development

From model API to dependable product.

Clutch 5.0 · 48 reviews ISO 27001 Certified600+ projects · 12+ years

The distance between calling a model API and running an LLM product is deceptively large: prompt versioning, structured outputs, tool orchestration, cost control, latency budgets, and graceful degradation all have to be engineered.

We've shipped LLM features into products serving millions of requests — summarization, extraction, copilots, content generation — and bring the patterns that keep them fast, cheap, and on-brand.

Whether you're adding AI to an existing product or building AI-native from scratch, we own the full path to production.

What's included

LLM Application Development services we offer

01

LLM Feature Development

Copilots, summarizers, extractors, and generators embedded in your product.

02

Prompt & Output Engineering

Versioned prompt systems, structured outputs, and schema-validated responses.

03

Model Routing & Cost Control

Right model per task, caching, batching, and per-feature cost dashboards.

04

Fine-Tuning & Distillation

Smaller, faster, cheaper models trained on your traffic when evals justify it.

How we work

A process built for certainty

  1. 1

    Discovery

    We map goals, users, constraints, and success metrics into a scoped roadmap with fixed milestones.

  2. 2

    Design

    UX flows and UI systems are prototyped, tested against real content, and signed off before build.

  3. 3

    Build

    Senior engineers ship in weekly sprints with code review, CI, and a demo environment you can click.

  4. 4

    QA & Launch

    Automated and manual QA, performance and accessibility audits, then a monitored, reversible launch.

  5. 5

    Support

    Post-launch SLAs, iteration sprints, and roadmap reviews keep the product improving.

Stack & models

Technologies and ways to engage

ClaudeOpenAITypeScriptNode.jsPythonRedis

Fixed-scope project

Defined deliverables, milestone billing, and a warranty period.

  • Signed scope & timeline
  • Weekly demo cadence
  • Best for bounded builds

Dedicated team

A stable pod on monthly capacity, steered by your priorities.

  • Scales quarterly
  • Roadmap-driven
  • Best for products

Hourly / retainer

Flexible senior hours for audits, fixes, and advisory.

  • 40-hour minimum
  • Rolls over 1 month
  • Best for ongoing needs

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Projects delivered

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Years in business

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Client retention

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5-star reviews

Proof

LLM Application Development in production

FAQ

LLM Application Development — common questions

Which model providers do you work with?

Anthropic, OpenAI, Google, and open-weight models via your cloud. We're provider-neutral and route per task based on evals, latency, and cost.

How do you keep costs predictable?

Per-feature budgets, prompt caching, response caching, model routing, and dashboards that show cost per user action — before launch, not after the bill.

Can you retrofit AI into our existing codebase?

Yes — most engagements integrate into existing products. We work in your stack and your repos with your review process.

How fast can we ship a first feature?

A production-quality first feature typically lands in 4–6 weeks including evals and rollout controls.

Related services

Where teams go next

Ready to start with llm application development?

Tell us where you're headed — a senior specialist replies within one business day.