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

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HYPLAP IT SOLUTION PRIVATE LIMITED
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At HYPLAP, we go beyond developing technology; we create solutions that revolutionize businesses. As a premier provider of technology, branding, and digital transformation services, we enable companies to grow, innovate, and succeed in the digital landscape. Our specialties include custom software
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Services Provided+7 Services
10% Mobile App Development (iOS & Android)
11% Custom Web Application Development
4% E-Commerce Development
6% Product UX Strategy
AI Summary
“HYPLAP IT SOLUTION PRIVATE LIMITED delivers custom software, digital transformation, and branding services using advanced technologies to drive innovation, efficiency, and growth across diverse businesses.”
DTechKrew Software & AI Solutions
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DTechKrew is a comprehensive software studio that empowers startups, scale-ups, and enterprises with innovative digital solutions. We specialize in AI solutions, web app, and mobile app development, combining technical expertise with business acumen to bring ambitious ideas to life. Our proficiency
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+9 Services
14% Mobile App Development (iOS & Android)
13% Custom Web Application Development
7% SaaS Product Development
8% AI Agent & Multi-Agent System Development
AI Summary
“DTechKrew delivers innovative AI-powered software and app development services, leveraging expertise in JavaScript and Python to create scalable, intelligent digital solutions for startups and enterprises worldwide.”
Robot Sea Monster
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Robot Sea Monster (RSM) is a game and application development studio established in 2012. We are dedicated to turning concepts into engaging digital experiences. Our goal is to help both startups and established companies realize their innovative ideas through comprehensive solutions in mobile, web,
Highlights
$25,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
10-49
Employees
Services Provided+4 Services
20% Mobile App Development (iOS & Android)
13% Custom Web Application Development
10% Backend Development
7% Frontend Development
AI Summary
“Robot Sea Monster is a development studio delivering user-focused games and applications using Unity, MERN, React, and Python, specializing in mobile, AR/VR, AI, blockchain, and Web3 solutions.”
Born Creative
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Born Creative is a comprehensive web design and digital marketing agency located in Michigan, USA. We focus on creating visually appealing, responsive, and SEO-friendly websites designed to support business growth online. Prioritizing user experience and branding, we offer design-oriented digital so
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+6 Services
8% AI Strategy & Roadmap Consulting
6% LLM Integration & Prompt Engineering
6% Custom AI Chatbot Development
20% Brand Identity Design
AI Summary
“Born Creative is a Michigan-based agency specializing in web design and digital marketing, delivering creative, responsive, and SEO-focused solutions to enhance business growth and online presence.”
41Labs
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We focus on providing AI software development services. Our skilled team can assist you in leveraging artificial intelligence to revolutionize your business.
Highlights
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided+5 Services
8% Custom AI Chatbot Development
6% LLM Integration & Prompt Engineering
5% Machine Learning Model Development
3% AI Strategy & Roadmap Consulting
AI Summary
“41Labs specializes in AI software development, delivering expert solutions to help businesses harness artificial intelligence for enhanced innovation and operational efficiency.”
IonX AI
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IonX AI Tech is an innovative agency focused on advancing AI technology to revolutionize businesses via artificial intelligence, automation, and state-of-the-art digital solutions. We equip organizations with AI-based strategies that boost productivity, efficiency, and growth potential. Our skilled
Highlights
$1,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
10-49
Employees
Services Provided+7 Services
8% Generative AI
3% Other IT Consulting and SI
8% Machine Learning Model Development
5% AI-Powered Document Processing
AI Summary
“IonX AI Tech specializes in delivering tailored AI and automation solutions across healthcare, finance, e-commerce, and enterprise sectors, enhancing business productivity and growth through advanced digital technologies.”
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PSI Square
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Nearly all companies are encountering the challenge of adopting digital transformation. Whether your goal is to utilize augmented reality to enhance certain operational aspects (value chain) or to create an IoT ecosystem with Smart Contracts, Psi Square is here to comprehend and provide all the esse
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Lahore, Pk Punjab, Pk
Services Provided+11 Services
8% Custom Web Application Development
5% API Development & Integration
4% Frontend Development
2% Legacy System Modernization
AI Summary
“Since 2015, PSI Square delivers comprehensive digital transformation solutions, including augmented reality and IoT ecosystems, to optimize operations and achieve business objectives across industries.”
Cloudmate Technologies LLP
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Cloudmate Technologies is a company specializing in AI and Digital Transformation, dedicated to helping businesses modernize their operations through intelligent automation, AI-driven systems, and scalable cloud infrastructure. We collaborate with startups, small and medium enterprises (SMEs), and l
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Ahmedabad, Gujarat, In
Services Provided+18 Services
2% AI Strategy & Roadmap Consulting
2% Workflow Automation (Zapier / Make / n8n)
2% Machine Learning Model Development
1% IT Staff Augmentation
AI Summary
“Cloudmate Technologies LLP specializes in AI-driven automation, software development, cloud infrastructure, and business consulting, delivering integrated digital transformation solutions for scalable, efficient enterprise operations.”
XFlow Studio
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About Us: At XFlow Studio, we are a design agency focused on web design and AI automation. Our goal is to empower our clients by offering high-quality, affordable, and customized digital solutions that promote business growth and enhance customer engagement. Leveraging no-code tools such as Figma, E
Highlights
$1,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Gifhorn, Lower Saxony, De
Services Provided+11 Services
14% E-Commerce Development
6% CMS Development & Customization
8% Product UX Strategy
6% UX Research & Usability Testing
AI Summary
“XFlow Studio delivers customized, affordable web design and AI automation solutions using no-code tools, enhancing user experience and operational efficiency for diverse industries and businesses.”
Helmconsulting.AI
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Helm Consulting AI is a firm based in Southern California that specializes in implementing AI solutions to help businesses enhance their profitability through effective systems. Under the leadership of Todd Salemi, PMI-CPMAI—who is certified in managing AI projects by PMI—we utilize the Helm Framewo
Highlights
$1,000+
Min Project Size
2-9
Employees
Services Provided+8 Services
10% AI Strategy & Roadmap Consulting
5% LLM Integration & Prompt Engineering
5% Custom AI Chatbot Development
3% Machine Learning Model Development
AI Summary
“Helm Consulting AI, led by Todd Salemi, delivers AI-driven efficiency and profitability improvements across diverse industries using the Helm Framework and rigorous project management standards.”

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Top LLM Integration & Prompt Engineering Companies

List of the Best LLM Integration & Prompt Engineering Agencies

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