Custom generative AI development services
Copilots, custom LLM apps, and fine-tuned models built on your data, shipped to production by senior nearshore engineers in your time zone.
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15+years delivering software
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100+senior engineers across LATAM
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6-8hdaily overlap with US teams
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6+Fortune 500 & global brands trust us
Generative AI embedded into your product, not bolted on
FusionHit builds generative AI into the core of your software, copilots, custom LLM apps, and models fine-tuned on your own data.
Senior nearshore engineers who take it from a proof of concept to a governed, production system, in your time zone.
Generative AI solutions we build
The generative capabilities that move real work, not demos.
Enterprise copilots and assistants
Context-aware copilots that speed up how your team finds answers and gets work done.
Custom LLM applications
LLM-powered apps built on your data and workflows, from idea to production.
Content generation
Text, image, and code generation embedded where your team already works.
RAG and knowledge systems
Retrieval systems that answer from your documents with sources, grounded and current.
Workflow automation
Generative AI that automates document, data, and decision-heavy workflows.
Custom model fine-tuning
Open or proprietary models (Llama, GPT) fine-tuned to your data, domain, and tone.
How we build generative AI that holds up
The engineering rigor that separates a production system from an impressive demo.
Fine-tuning and custom models
We fine-tune and adapt models to your data and domain, so outputs fit your business, not the internet's.
Evaluation and guardrails
Systematic evals, testing, and content controls, so quality is measured and unsafe outputs are caught.
Security and data control
Your data trains only your models, with PII handling, role-based access, and private deployment options.
Monitoring and improvement
We watch quality, cost, and drift in production, and improve, so the system stays accurate over time.
Why companies build generative AI with us
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Senior AI engineers
Engineers who have shipped generative AI to production, not first-time experiments.
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Built on your data
We ground and fine-tune on your data, so the AI reflects your business and stays accurate.
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Real-time collaboration
Nearshore engineers on US hours, live in your standups, tools, and reviews.
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Flexible engagement
Start with a proof of concept and scale, or embed a team, as your roadmap grows.
Generative AI we've shipped
Embedding AI Across the Full Engineering Lifecycle
Challenge A product engineering team was managing growing codebases with increasing complexity around quality control, documentation, and cloud infrastructure. Code reviews…
Making 130,000 Financial Documents Searchable with AI
Challenge A financial operations team was spending 2–3 hours per search session manually navigating complex document repositories — scanned PDFs, spreadsheets,…
AI-Augmented Development and Operations in a Multi-Team Enterprise
Challenge Multiple engineering teams working across Supply Chain and Support Services were operating in silos, each dealing independently with challenges around…
Generative AI for your industry
Built for the data, compliance, and workflows of your sector.
Fintech
Copilots and document AI for compliant, secure financial workflows.
Healthcare
HIPAA-ready assistants for clinical, admin, and patient-facing work.
SaaS
In-product AI copilots and content features that lift activation and retention.
Retail
Product content, personalization, and support generation at scale.
Logistics
Document processing and decision support across the supply chain.
Insurance
Claims, underwriting, and policy copilots that cut manual effort.
The generative AI stack we build with
The models and frameworks behind production generative AI.
LLMs
- • OpenAI (GPT)
- • Anthropic (Claude)
- • Llama
- • Open models
Frameworks
- • LangChain
- • LlamaIndex
- • Hugging Face
RAG & Vector
- • Pinecone
- • pgvector
- • Weaviate
Cloud AI
- • Azure OpenAI
- • AWS Bedrock
- • Google Vertex AI
Engage a generative AI team the way that fits
Add senior AI engineers to your team, embed a dedicated team, or hand us the full build. Pick the model that fits how you work today.
Add AI engineers to your team
Senior nearshore AI engineers join your existing team, under your direction, in days, not months.
Embed a dedicated AI team
A stable, cohesive team that works only on your product as an extension of yours. You set priorities and roadmap, the team self-organizes sprint after sprint.
Hand us the full build
Hand us the roadmap and we deliver end to end, under our direction: discovery, data, build, evaluation, and monitoring. You get an outcome, not a team to manage.
How we deliver generative AI, in your time zone
FAQs about our generative AI development services
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How much do generative AI development services cost?
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Should we fine-tune a model or use RAG?
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How do you keep outputs accurate and safe?
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Who owns the models and data?
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Which models do you work with?
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How long until we have something in production?
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Can you integrate generative AI into our existing product?
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Do you maintain it after launch?
Ready to build with generative AI?
Tell us what you want to build, and we'll show you the generative AI team that can build it.
Trusted by leading teams
Rated by our clients
