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LLM engineering

Custom LLM development for production applications

Large language models are powerful generalists. We turn them into domain specialists: copilots that understand your product, assistants that call your APIs, and workflows that stay within policy. Custom LLM development here means architecture, evaluation, and product delivery — not just prompt files.

LLM product engineering for teams in India, USA, UAE, Germany, Australia and remote-first global buyers.

When you need custom LLM development

You need custom work when off-the-shelf chat cannot access private data, enforce roles, trigger tools, or meet latency and compliance requirements. We help you choose between prompting, RAG, fine-tuning, and agents — and we tell you when a simpler approach is enough.

What we build on top of LLMs

Context assembly and memory, tool and function calling, structured outputs for downstream systems, streaming UX, multi-turn dialogue design, and admin controls for prompts and policies. Around that: auth, rate limits, audit trails, and dashboards for quality and spend.

Fine-tuning vs RAG (we help you decide)

RAG is usually the right first step for factual, changing knowledge. Fine-tuning helps with style, format, or specialised behaviour. Many production systems use both. We run the analysis so you do not pay for fine-tunes you do not need — or skip grounding when you do.

Capabilities

What we deliver

Custom LLM application architecture
Domain copilots and in-product assistants
Tool-using LLM agents and API orchestration
Fine-tuning strategy, evaluation, and iteration
Prompt and policy management for teams
Streaming chat UX and structured generation
On-prem, VPC, or multi-cloud model hosting options
Process

How we work

01

Capability mapping

Define tasks the LLM must perform, failure modes that matter, and data it is allowed to see.

02

Baseline & evaluate

Build a gold set of prompts/answers. Measure quality before optimising models or prompts.

03

Harden the loop

Add retrieval, tools, validation, and human review where risk is high.

04

Ship & govern

Deploy with monitoring, versioned prompts, and a clear path to improve weekly.

Why Tensor Solution

Differentiators

Engineering over hype

We optimise for measurable task success, not model brand names.

Full product surface

LLM logic plus web/mobile UX, APIs, and ops in one engagement.

Compliance-aware design

Data residency, retention, and access patterns considered early for EU and enterprise buyers.

Proof

Signals of delivery

  • Production copilots and assistants with evaluation harnesses
  • Multilingual LLM experiences for Indian and global users
  • Secure integration patterns for enterprise systems
Security-aware delivery with WarnHack partnership · GDPR & DPDP aligned privacy practices.
FAQ

Frequently asked questions

What is custom LLM development?+

It is building applications and workflows around large language models tailored to your domain — including prompts, retrieval, tools, fine-tuning where needed, UX, and production operations.

Do you train foundation models from scratch?+

Almost never. Training a foundation model is rarely the right investment. We specialise in applying and adapting existing models safely and cost-effectively.

Can you deploy LLMs on our infrastructure?+

Yes. We support API-based models and private deployments (VPC/on-prem) when data residency or policy requires it.

How do you control LLM costs?+

Through caching, retrieval so prompts stay small, model routing, rate limits, and dashboards that show cost per workflow — not only tokens.

Scope a custom LLM application

Share your use case and constraints. We will recommend architecture and a realistic pilot plan.

Have an idea worth building?

Book a free 30-minute consultation. We'll map the fastest path from concept to a production-ready product.