AI development services
We add AI to the product you have, or build a product with AI at the core. That work spans assistants and other LLM features, answers grounded in your own data, and agents that carry out work inside your product. Every feature is measured against real examples before it ships.
Add AI to your product, or build one around it
Most AI work begins inside a product that already exists. Some products are only possible because of what AI can do. WeaveLines undertakes both.
Add AI to an existing product
You have a product, users, and a list of things AI could do for them. It could answer questions from your own documentation, summarize, draft, classify, or carry a multi-step task through from start to finish. We identify the feature with the clearest value, build it into your product, and measure it before it ships.Build an AI-native product
The idea only works because of what AI can do. We shape the product around that from the start, deciding which model does what, where the data comes from, what happens when the model is wrong, and how the product stays useful as models change.
Our AI development services
We offer five kinds of AI work, each built into web and mobile products and measured before it ships.
AI assistants and chatbots
We build customer-facing chatbots and in-product assistants that answer questions, guide users and hand over to a person when they should, built with Claude, GPT, Gemini or open models, chosen per use case.Generative AI features
Summarization, drafting, classification and extraction are built into the flows your users already have, from the first draft of a reply to the tags on a ticket to the five fields pulled out of an uploaded document.Answers from your own data
We build retrieval over your documents, tickets, records or knowledge base, so the assistant answers from what your company actually knows and shows where each answer came from.AI agents and workflow automation
We build agents that carry out real work inside your product or your operations. They call your tools and APIs, run multi-step workflows, and pause for a person’s approval at the steps you decide should not run alone. We build them with tool calling and MCP where it fits.AI integration into existing products
We add the right AI to the product you already run, guided by your needs, your data and your budget, and build it in a way your existing team can maintain.
How we build AI features
The work proceeds in four steps, with a measured result at the end of each one.
01Frame
A short working session identifies the use case with the clearest value, defines what a good answer looks like, and confirms what data is available to work with. If AI is not the right instrument for the problem in front of you, we advise you accordingly.02Prototype with real data
We build a working prototype against your real data, so that you and your users judge actual answers rather than a demonstration. An evaluation set built from real examples takes shape at the same time, so that quality is measured rather than estimated.03Build and integrate
The feature enters your product with the same discipline as any other. Code is reviewed, automated tests run, the evaluation set runs on every change, and monitoring is in place before launch. Your data remains in your own accounts and is not used to train anyone’s models.04Launch and monitor
Models change, data changes, and answers drift over time. Monitoring remains active after launch and the evaluation set runs on every change, so a shift in a model or in your data appears as a number before it reaches your users.
Three rules on every AI project
Whatever the model and whatever the product, these three principles hold.
- Model-agnostic
- We work with Claude, GPT, Gemini and open models, and we select per use case on quality, cost and where your data is permitted to go. When your data cannot leave your environment, we run open models inside it.
- Your data stays yours
- Model providers, vector stores and cloud infrastructure run under your own accounts rather than ours, and we apply the settings that keep your data out of anyone’s training.
- Measured before it ships
- Every AI feature receives an evaluation set built from real examples, and the work is not complete until the numbers confirm it.

What we build with
The stack is chosen for each product. These are the technologies we work with most.
- Models
- Claude, GPT, Gemini or open models, chosen per use case.
- Retrieval
- Vector search in PostgreSQL or a dedicated vector store, whichever the product calls for.
- Application
- TypeScript and Node.js services inside your existing product, on the web or in the app.
- Cloud
- AWS first or Cloudflare where it fits, under your own accounts.
How we engage
A single AI feature is usually delivered as a fixed-price project with an agreed use case, an agreed definition of good and a launch date. Larger AI products run on time and materials billed monthly, and a retainer covers monitoring, improvements and the next features after launch.
- MVPs launched
- 36
- Startups coached
- 150+
- Mentorship programs
- 12
- Founded
- 2017
Frequently asked questions
What AI development services do you offer?
Our services cover AI assistants and chatbots, generative AI features such as summarization, drafting, classification and extraction, answers grounded in your own data through retrieval, AI agents and workflow automation, and the integration of all of these into products that already exist. WeaveLines builds them into web and mobile products, either extending a product you already operate or building one around AI from the start.
Do you integrate existing models or train your own?
We build with existing models. Claude, GPT, Gemini and open models are chosen per use case. Most products progress further and faster with the right model and the right data around it than with a custom-trained one, and that is where WeaveLines directs its effort. We do not train custom models.
Which models do you use?
We use Claude, GPT or Gemini for most features, and an open model when your data cannot leave your environment or when cost matters more than the last point of quality. WeaveLines selects the model per use case and structures the product so that switching models later is a small change rather than a rewrite.
How do you keep our data private?
Everything runs under your own accounts, including the model provider, the vector store and the cloud. WeaveLines applies the provider settings that keep your data out of model training, and when data is not permitted to leave your environment at all, we run open models inside it.
How do you know an AI feature is good enough to ship?
We measure it. Before anything ships, an evaluation set built from real examples establishes how often the feature answers correctly, and it runs again on every change afterwards. A person reviews the failures and decides what good looks like. WeaveLines does not ship an AI feature on the strength of a demonstration alone.
Can you add AI to a product you did not build?
Yes. Most AI work begins inside an existing product. WeaveLines starts with a focused review of your codebase and your data, identifies the feature with the clearest value, and builds it in a way your existing team can maintain.
How long does an AI integration take?
The timeline depends on the feature, the state of your data and how much of the product it touches, so WeaveLines provides one after the framing session rather than before it. Adding a feature to an existing product with existing models is the fastest kind of AI work. Building a product around AI from the start takes longer.
How is AI work priced?
A single AI feature is usually delivered as a fixed-price project with an agreed use case, an agreed definition of good, and a launch date. Larger AI products run on time and materials billed monthly. After launch, a retainer covers monitoring, improvements and the next features. WeaveLines provides a quotation after a short call about what you have and what the feature should do.
From the blog
How to decide whether to build or buy AI for your product
An AI capability usually takes one of three shapes. It can be an off-the-shelf tool, a feature built on a foundation model, or a custom model. This guide covers how to choose between them on value, data, cost over five years and the risk of being wrong.Read moreRAG explained for founders, making an AI assistant answer from your own data
Retrieval-augmented generation is how an AI assistant answers from your documents and records instead of guessing. What it is, when you need it, where it fails in production, and what it takes to build one that holds up.Read more
Everything else we build
AI features rarely stand alone. The same team designs and builds the product around them.
Product Development
Custom software development, delivered release by release.Learn moreMVP Development
A first version your customers can use, live in 2 to 6 weeks.Learn moreProduct Design
Research, an interactive prototype in days, and the interface engineers build from.Learn moreWeb Development
Web applications, dashboards, APIs and integrations.Learn moreMobile Development
iOS and Android applications, built with React Native and Expo.Learn moreDesktop Development
Windows, macOS and Linux applications, built with Electron.Learn moreProduct Management
Direction, scope and priorities from a product lead or a fractional CPO.Learn more
Build AI into your product
Tell us what your users need and what data you have available. Thirty minutes is enough to establish whether AI helps here, and what it would take.
Get in touch with us
Tell us about your product and your plans. We will come back with a clear view of what it would take and how we would approach it.
Our offices
- HeadquartersWeaveLines LLCrue Slah Eddine Bouchoucha2026 Sidi Bou SaidTunis, Tunisia
- Tunis OfficeWeaveLines LLC39 rue Ibn Khaldoun1002 Tunis, Tunisia
