/ AI ENGG· Retrieval-Augmented Generation

RAG — Retrieval, Engineered.

A model only knows what it has seen. RAG is how it learns the rest of your business — in real time, on the right data, with the right governance.

RAG is a discipline, not a feature. humaineeti engineers retrieval systems that survive production: ground-truth indexed, evaluated continuously, and accountable to the answer they returned and the source they used.

What we build

Most RAG demos work on a hundred documents and break on a hundred thousand. Our work begins where demos end — chunking discipline, hybrid retrieval, citation fidelity, freshness windows, and the evaluation harness that catches drift before users do.

The stack we use

Model-agnostic, deployment-flexible. We build on what you already pay for, or what fits your constraints best.

Retrieval

  • Vector stores: Pinecone, Milvus, Weaviate, Qdrant, pgvector, OpenSearch
  • Hybrid search with BM25 + dense + reranking (Cohere, BGE-reranker)
  • Knowledge graphs: Neo4j, Neptune, Memgraph

Generation

  • Frontier: Claude, GPT, Gemini
  • Open-weight: Qwen, Kimi, DeepSeek, Llama
  • Embeddings: OpenAI, Cohere, BGE, NV-Embed, custom domain-tuned

Orchestration

  • LangChain, LlamaIndex, custom orchestrators
  • MCP-native tool integration
  • Caching, streaming, fallbacks built in

Evaluation

  • Ragas, custom scorer frameworks, LLM-as-Judge
  • Faithfulness, answer relevance, context precision/recall
  • Continuous evaluation tied to deployment

RAG vs fine-tuning — the question we hear most

Use RAG when the knowledge changes, when sources need to be cited, or when answers must be grounded in your data. Use fine-tuning when the style or format of the response is what needs to change. Most enterprise systems need both. Read the full decision guide →

Where it fits

RAG is the engineering discipline behind most of the AI applications we ship — conversational analytics, knowledge assistants, customer-support agents, code search, compliance review, and the kind of internal copilots that need to answer with citations.

Related resources

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