Top LLM Integration & Prompt Engineering Companies

LLM integration and prompt engineering is the work of putting a large language model, such as GPT, Claude, Gemini or Llama, inside an existing product or workflow so that it answers correctly from your own data. The firms build retrieval-augmented generation (RAG) over documents and databases, write and version the prompts, connect the model to tools and APIs, and set up evaluations and guardrails that catch wrong or unsafe output. Companies hire them when a chatbot demo works but fails on real questions, or when support, sales or operations teams want AI features in tools they already use.

Compare the firms here on shipped production features rather than demos, how they measure answer quality, and how they handle data privacy.

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2,741 Companies

List of the Best LLM Integration & Prompt Engineering Agencies

Fresche Solutions
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IBM i and Microsoft Systems, Reimagined for the Future. As pioneers in AI-driven IT modernization, Fresche optimizes and enhances the value of IBM i and Microsoft critical business systems. With our leading intellectual property and established solutions in Modernization, Application Managed Service
Highlights
$10,000+
Min Project Size
250-999
Employees
Franklin, Tennessee, Us
Services Provided+3 Services
8% Custom AI Chatbot Development
8% Cloud Consulting & SI
10% Machine Learning Model Development
7% AI-Powered Document Processing
AI Summary
“Fresche Solutions specializes in AI-driven modernization of IBM i and Microsoft systems, offering comprehensive services including cloud, analytics, and managed solutions to optimize business operations globally.”
Beyond the Arc
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Revolutionizing Business with Advanced Data Analytics In today's competitive landscape, numerous companies find it challenging to enhance customer relationships, boost revenue, and stand out in their industry. How can these businesses harness extensive customer data from various feedback channels
Highlights
$10,000+
Min Project Size
$150+/hr
Avg Hourly Rate
10-49
Employees
Berkeley, California, Us
Services Provided+6 Services
12% Business Intelligence (BI) Dashboard Development
15% Data Strategy Consulting
7% Marketing Mix Modeling (MMM)
12% Machine Learning Model Development
AI Summary
“Beyond the Arc integrates advanced data analytics, AI, and digital marketing to deliver data-driven strategies that enhance customer experience, optimize growth, and strengthen brand engagement across industries.”
CAIAT LLP
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At CAIAT, we collaborate with a diverse array of businesses, ranging from small family-run stores to medium-sized enterprises. Our clientele features physical retail outlets, online businesses, digital marketing firms, and tech startups. Clients opt for our services because we stay current with the
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Newark, Delaware, Us
Services Provided+2 Services
30% Robotic Process Automation (RPA)
5% IT Staff Augmentation
15% Generative AI
20% Machine Learning Model Development
AI Summary
“CAIAT LLP is a professional firm offering diverse services with expertise in various sectors, committed to delivering quality solutions and fostering client trust through comprehensive capabilities.”
Junkies Coder - Hire Mobile App Developers
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Junkies Coder is a well-known technology firm focused on AI-driven mobile app and software development. Operating in 15 countries with a talented team of over 50 developers, they cater to startups, enterprises, and global brands. Renowned for their high-performance applications and innovative digita
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Ahmedabad, Gujarat, In
Services Provided+7 Services
20% Mobile App Development (iOS & Android)
10% Custom Web Application Development
8% Backend Development
5% Frontend Development
AI Summary
“Junkies Coder is a global tech firm specializing in AI-driven mobile and software development across diverse industries, delivering scalable, high-performance digital solutions with end-to-end support.”
Parangat Technologies
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In a brief period, Parangat has established itself as a top name in the field of enterprise-level application development. We excel in seamlessly integrating people, processes, and products by offering tailored, cutting-edge, and affordable solutions for iPhone/iPad apps, Android apps, and website d
Highlights
$10,000+
Min Project Size
< $25/hr
Avg Hourly Rate
50-249
Employees
Noida, Uttar Pradesh, In
Services Provided+4 Services
20% Mobile App Development (iOS & Android)
12% Custom Web Application Development
2% Blockchain & Web3 Development
7% AI Strategy & Roadmap Consulting
AI Summary
“Parangat Technologies delivers tailored software, AI-driven solutions, blockchain development, and customer support outsourcing, integrating innovation and client-focused services for enterprise application excellence.”
FalcoMatics
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FalcoMaticsLLC consists of a group of designers, engineers, data scientists, and system integrators specializing in computer vision, image processing, and data analytics. Our main offerings include Drone Data Analytics Solutions, comprehensive Dispatch Solutions, and Multi-Camera Video Conferencing.
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+1 Services
15% AI Strategy & Roadmap Consulting
10% LLM Integration & Prompt Engineering
10% Custom AI Chatbot Development
50% Machine Learning Model Development
AI Summary
“FalcoMatics LLC specializes in computer vision, image processing, and data analytics, providing drone data analytics, dispatch solutions, and multi-camera video conferencing services.”
Gravity Base
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Gravity Base is an AI development firm located in Dubai that focuses on creating secure, enterprise-level AI systems and automated workflows for businesses. Our goal is to reduce operational hurdles by converting data into actionable insights in just seconds instead of hours. One of our key strength
Highlights
$5,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
50-249
Employees
Services Provided+4 Services
15% AI Strategy & Roadmap Consulting
20% LLM Integration & Prompt Engineering
10% Custom AI Chatbot Development
15% Machine Learning Model Development
AI Summary
“Gravity Base, a Dubai-based AI firm, develops secure, scalable enterprise AI systems and automated workflows, specializing in regulated sectors and implementing robust governance and compliance frameworks.”
smartSense Consulting Solutions
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We are a product design and engineering firm based in Gandhinagar, India, utilizing cutting-edge technologies, and supported by a skilled team of over 150 professionals. Our primary areas of expertise include AI, IoT, Data Science, and Blockchain. We conduct comprehensive analyses of client needs to
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Services Provided+8 Services
8% API Development & Integration
3% Legacy System Modernization
14% Custom Web Application Development
8% Mobile App Development (iOS & Android)
AI Summary
“smartSense Consulting Solutions is an India-based product design and engineering firm specializing in AI, IoT, Data Science, and Blockchain with a skilled team of 150 professionals delivering cutting-edge technology solutions.”
Unchained
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Unchained offers an outsourced AI department tailored for mid-sized businesses, prioritizing the generation of real business value. Committed to the ethical application of AI, we enhance productivity through smart automation and strategic integration. Our range of services encompasses customized AI
Highlights
$5,000+
Min Project Size
$150+/hr
Avg Hourly Rate
2-9
Employees
Chicago, Illinois, Us
Services Provided
40% AI Strategy & Roadmap Consulting
10% LLM Integration & Prompt Engineering
50% Custom AI Chatbot Development
AI Summary
“Unchained provides outsourced AI services for mid-sized businesses, focusing on ethical AI application, smart automation, training, and tech support to enhance operational efficiency and business value.”
Citric Sheep
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We develop custom, comprehensive high-tech AI systems, focusing on fields such as computer vision, large language models/GPT solutions, neural networks, predictive systems, and pattern recognition.
Highlights
$10,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Auckland, Auckland, Nz
Services Provided+4 Services
5% AI Strategy & Roadmap Consulting
10% LLM Integration & Prompt Engineering
8% Custom AI Chatbot Development
10% Machine Learning Model Development
AI Summary
“Citric Sheep specializes in custom AI solutions encompassing computer vision, large language models, neural networks, predictive analytics, and pattern recognition across diverse high-tech applications.”

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Top LLM Integration & Prompt Engineering Companies

List of the Best LLM Integration & Prompt Engineering Agencies

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