AI Agent Development Companies
AI agents are systems that plan, call tools and complete multi-step work with limited supervision. Compare development companies that build and operate them, read client reviews and request quotes.
Appfox
A+We have assembled a team of cool specialists: project managers, game designers, programmers, illustrators, analysts and marketers. We provide a full range of turnkey services - fro…
- Min. project
- $30k+
- Portfolio
- 95
Our purpose is to create a better, more sustainable world through design, art, and technology. We use our talents to help the most admired brands achieve greater results and move t…
- Min. project
- $10k+
- Portfolio
- 13
We have been developing websites, applications and services since 2012 - we do a lot of work for medical centers, architectural offices and restaurant business. We know how to make…
- Min. project
- $3k+
- Portfolio
- 19
Experience of work since 2009. The staff includes certified specialists software engineers for ACS, specialists in 3D-modeling, illustrators, specialists in SEO-promotion and optim…
- Min. project
- $100+
- Portfolio
- 10
The main goal is to increase clients' profits by means of such Internet marketing tools as website development, creation of landing pages, creation of interactive solutions, as wel…
- Min. project
- $3k+
- Portfolio
- 13
In this world full of change it is important to have a tech partner you can trust. Main services: Consulting and custom software development of Web, IOS, Android, SAAS, Big Data pr…
- Portfolio
- 47
D Amies is prominent name in IT sector availing amazingly excellent IT solutions throughout the world. While talking about great quality services in online marketing, website desig…
- Min. project
- $100+
- Portfolio
- 2
Dot Com Infoway, a CMMI Level 3 multinational information technology company, is a pioneer in delivering software development, mobile application and internet marketing solutions a…
- Min. project
- $100+
- Portfolio
- 4
Bij Balticode vindt u 14 ervaren vakspecialisten met passie voor iOS, Android en Windows apps. Onze core business is technische realisatie van app-, webapp en iBeacon toepassingen.…
- Min. project
- $10k+
- Portfolio
- 2
Protonbits is a leading international IT company providing expert website development solutions. We are using diffrent diffrent paltforms to build website like PHP, WordPress, Cake…
- Min. project
- $30k+
SATVASPACE is a company of web and mobile application developers who are truly interested in the success of your project and business in general. We have implemented such large pro…
“Считаю SatvaSpace профессионалами своего дела, которые понимают заказчика, особое спасибо за это техническому\r\nдиректору Дмитрию Голикову.”— ОЭЗ Алабуга
- Min. project
- $20k+
- Portfolio
- 15
- Reviews
- 3
- Portfolio
- 1
Rubyroid Labs has been developing web and mobile applications since 2013. Central office in Warsaw. Volvo (England), Mastercard (USA), Toyota (USA), BePaid (Belarus), Drone Base (U…
- Min. project
- $10k+
- Portfolio
- 5
We build awesome websites that work intuitively on any device. Quick glimpse of the services we offer globally:-- Web Design & Development-- Mobile Application Development-- eComme…
- Min. project
- $3k+
- Portfolio
- 1
ASTUDIO team has been working on the international programming market since 2010. We create complex turnkey websites. Web studio in Almaty has been working since 2014 and provides…
“Дорого берут, но качество обслуживания и работы супер!”— Arji Market
- Min. project
- $3k+
- Portfolio
- 3
- Reviews
- 2
Nineseven is a full-service web agency. We specialize in large e-commerce projects. We have been in the web development market since 2010. Our clients: "Gazprom", Mail.ru, "Mango I…
- Min. project
- $20k+
- Portfolio
- 16
- Portfolio
- 10
We are "Creative Studio AnikA" LLC - a team from Belarus. We have been working in the field of IT for more than 7 years. We are a branch of the Department of Information Technologi…
- Portfolio
- 10
We are always focused on long-term cooperation, so we can offer the price of services often equal to the cost of one freelancer for the work of our team with a guarantee of quality…
- Min. project
- $100+
- Portfolio
- 11
Hi, we’re Innovify, a London-based product foundry that gets ideas off the ground and converts them into scalable software.With our delivery office in India, we as an end-to-end pr…
- Min. project
- $30k+
- Portfolio
- 2
MindInventory has been dealing with Enterprises, Startups and Agencies since 2011 providing the services in terms of Enterprise Web Development, Startup Consulting, Mobility Soluti…
- Portfolio
- 8
Allow your curiosity to guide you. Dare to experiment, failing is part of the process. Be confident that the challenges you encounter match your competencies. You are on a mission…
- Min. project
- $30k+
- Portfolio
- 2
Looi
B- Min. project
- $20k+
- Min. project
- $20k+
- Portfolio
- 1
Internet Solutions is a range of services from performance marketing agency. Highly effective websites, mobile applications, customer acquisition, CRM systems, Cross-cutting analyt…
- Portfolio
- 7
Ape Unit
B+Berlin based design and development bureau. We create digital innovation. By instinct.
- Portfolio
- 1
Mtoag, established in 2009 provides the most economical and consumer friendly solutions at a cutthroat cost. The company focuses on long term bond with their customers by providing…
- Min. project
- $20k+
- Portfolio
- 3
HQSoftware is a trusted software development company primarily delivering IoT, AR, and VR projects worldwide. Being headquartered in Tallinn, Estonia, and having a development lab…
- Portfolio
- 5
A fully accustomed team for all of your technical needs. Huge coverage that ranges from delivering custom tailored apps to big data and machine learning depositories. The team that…
- Min. project
- $3k+
- Portfolio
- 1
Warsaw · Since 1997 · 500+ employees
AI-First Company. Fast Response. Responsive Services
- Min. project
- $20k+
- Hourly rate
- $24–$70/hr
- Portfolio
- 11
Gold Carrot is a leader in the development of technically complex Internet projects in Khanty-Mansiysk Autonomous Okrug. Our team consists of more than 20 professionals with practi…
- Min. project
- $3k+
- Portfolio
- 2
We take a core tech approach and offer a wide range of services, like app development, data engineering, cloud deployment, enterprise transformation, etc., to nurture innovation. O…
“Best Mobile App Development company in Chennai, India.”— ManageTeamz
- Min. project
- $100+
- Portfolio
- 2
- Reviews
- 1
We are the leading Mobile Apps Development Company in USA. FuGenX Technologies has 8 years of experience in offering Mobile apps development Globally presence in USA, UAE, UK, Saud…
- Portfolio
- 4
Before you shortlist anyone
All calculatorsCustomer Reviews about AI agents
ХакТайка
Команда ХакТайка работает быстро и качественно. Понравился подход к работе и их внутренней экосистеме: он показал, что разработка может быть прозрачной и понятной.
Asanov Agency
Обратились к ребятам по поводу редизайна нашего старого сайта. Отрисовали и сверстали все отлично. С нетерпением ждем релиза. Спасибо за работу!
JanBask Digital Design
We had a positive experience working with JanBask Digital Design for our website redesign and digital marketing needs. Their team was professional, responsive, and easy to communicate with throughout the project. They created a modern, mobile-friendly website that improved our online presence and user experience. We also appreciated their support with SEO and website optimization, which helped increase visibility and engagement. The project was completed on time, and the team was always open to feedback and revisions. Overall, JanBask Digital Design delivered quality work and reliable support, and we were satisfied with the collaboration.
What an AI agent team actually builds
An agent is a model given tools, memory and a loop: it decides what to do next, calls an API or a script, reads the result, and repeats until the task is done or a limit is hit. The interesting engineering is not the prompt — it is what happens when a tool call fails, when the model loops, or when it confidently does the wrong thing.
- Tool and API layers. Typed, well-described functions the model can call, with validation, retries and idempotency so a repeated call cannot double-charge a customer.
- Orchestration. Planner-executor patterns, multi-agent hand-offs, and state that survives a crash mid-run.
- Human-in-the-loop controls. Approval gates on anything irreversible — payments, emails to customers, database writes.
- Evaluation and traces. Recorded runs, replayable failures and a scored test set, so behaviour can be compared release to release.
- Cost and latency budgets. Step caps, model routing and caching, because an unbounded agent loop is an unbounded invoice.
How to choose an agent development vendor
- Ask to see a trace of a real production run, including a failure and how the system recovered.
- Ask what percentage of runs complete without human intervention, and how that number is measured.
- Check the guardrails: step limits, spend limits, permission scopes and rollback for every tool with side effects.
- Confirm the framework choice is a decision, not a habit — and that you can maintain what they leave behind.
- Start with one workflow that has a clear success signal. Agents that own a single process outperform general-purpose assistants in nearly every deployment.
Frequently Asked Questions
How is an AI agent different from a chatbot?
What does agent development cost?
Are AI agents reliable enough for production?
Which frameworks do agent teams use?
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