What is the difference between model engineering and AI application engineering?
Model engineering focuses on choosing, adapting, evaluating, routing and optimizing the intelligence used by a system. AI application engineering builds the user experience, integrations and workflow that put that intelligence to work. They are complementary, but they solve different technical problems.
What is a Small Language Model (SLM)?
A Small Language Model is a relatively compact language model intended to perform language tasks with less compute than many larger models. The exact size depends on the model family and use case. An SLM can be a strong fit for focused extraction, classification, short-form generation and other measurable workloads, but it is not automatically better for every problem.
Can an SLM be fine-tuned on our private enterprise data?
Potentially, yes. The process depends on your data rights, model license, security requirements, dataset quality and compute environment. We assess whether fine-tuning will add value, prepare approved training data, evaluate the results and document the deployment and governance requirements.
What is the difference between RAG and fine-tuning?
RAG supplies relevant external information to the model when a request is made. Fine-tuning adjusts model parameters using training examples. RAG is often better for frequently changing policies and reference content, while fine-tuning can improve repeated task behavior, formats and domain-specific patterns. Some workloads need both, and others need neither.
Does fine-tuning remove hallucinations?
No. Fine-tuning can improve performance on a defined task but does not guarantee factual correctness. Retrieval grounding, evidence checks, structured validation, abstention, evaluation and human oversight remain important where errors matter.
What does AI harness engineering mean?
AI harness engineering builds the runtime around a model, including prompts, context, tool calls, orchestration, permissions, validations, state, retries, evaluation and telemetry. The harness makes model behavior usable and governable as part of an enterprise system.
What is intelligent model routing?
Intelligent model routing selects an approved model or deterministic service for a task based on factors such as data sensitivity, workload type, assessed capability, latency, risk and cost. It can escalate difficult cases to a more capable authorized model or a human reviewer when necessary.
Can a model router use a frontier LLM only for difficult cases?
Yes, if the organization permits that model and data flow. A routing policy can direct routine cases to SLMs and escalate permitted exceptions. Restricted information must not leave its approved boundary merely because the request is complex.
Which technologies do you use for SLM training and inference?
The stack depends on the workload and enterprise environment. Options may include PyTorch, Hugging Face Transformers, PEFT and LoRA-style adaptation, model registries, vLLM, llama.cpp, TGI, ONNX Runtime and compatible infrastructure. We select components based on licensing, security, maintainability and benchmark results rather than a fixed vendor list.
Is a smaller model always cheaper to operate?
No. A smaller model may lower compute needs, but overall cost also depends on hardware utilization, throughput, retries, human review, training effort and the percentage of tasks completed correctly. We compare end-to-end cost per accepted outcome.
Can model engineering work with fully private or on-premises AI?
Yes, where the models, infrastructure and licensing support that deployment. We can engineer a model portfolio and routing layer for enterprise-controlled environments, including private cloud, on-premises and hybrid patterns. Any external provider usage is subject to explicit approval and data handling policies.
How do you measure whether a fine-tuned model is better?
We establish a baseline, hold out representative test data, evaluate task-specific metrics and compare before-and-after results, including failure cases. We also test latency, operational cost and regressions across critical categories. A fine-tune is useful only if it improves the agreed business outcome.
Do you build proprietary foundation models from scratch?
Training a large foundation model from scratch is not usually the most practical starting point for an enterprise workflow. Our primary focus is selecting, adapting, orchestrating and optimizing existing models, and engineering task-specific intelligence. If a specialized training program is justified, we assess its data, compute, cost, licensing and research requirements separately.