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

Purposeful IT
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Purposeful IT assists trades businesses in the greater Cleveland and Lorain County regions in boosting their online presence and converting that visibility into genuine leads. We collaborate with HVAC contractors, roofers, plumbers, and electricians who have been operational for years yet struggle t
Highlights
$100-149/hr
Avg Hourly Rate
Avon, Ohio, Us
Services Provided+9 Services
5% Digital Strategy
7% Content Marketing Strategy
2% Other Digital Marketing
20% Search Engine Optimization (SEO)
AI Summary
“Purposeful IT enhances online visibility for trades businesses in Northeast Ohio through SEO, web design, and local search optimization, bridging the gap between reputation and digital presence.”
Kryoverse Innovations
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Kryoverse Innovations is an innovative software development firm that is transforming technology through creativity. We focus on delivering outstanding user experiences while utilizing the power of AI. Our team of dedicated professionals is skilled in Agile and Scrum methodologies, ensuring effectiv
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Services Provided+8 Services
20% Mobile App Development (iOS & Android)
18% Backend Development
13% Custom Web Application Development
3% Other IT Consulting and SI
AI Summary
“Kryoverse Innovations delivers comprehensive software solutions, including AI, cloud, web, mobile development, and IT staffing; leveraging Agile methodologies to drive digital transformation and technology consulting.”
Dynalize Technologies
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Dynalize Technologies is a privately owned boutique firm based in India. We offer digital solutions across a wide range of areas, including Cloud & DevOps, Internet of Things (IoT), Artificial Intelligence, web development, and data engineering. At Dynalize, we prioritize our customers' requirements
Highlights
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+7 Services
14% Custom Web Application Development
7% API Development & Integration
3% Mobile App Development (iOS & Android)
8% Backend Development
AI Summary
“Dynalize Technologies is an Indian boutique firm providing tailored digital solutions in Cloud, DevOps, IoT, AI, web development, and data engineering, focusing on customer needs.”
Baaz
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Baaz is a software product development studio located in Bangalore, driven by a commitment to creating meaningful digital products. Since our establishment in 2018, we've collaborated with startups, scale-ups, and established companies to design, develop, and launch over 100 web and mobile applicati
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Bengaluru, Karnataka, In
Services Provided+12 Services
20% Custom Web Application Development
13% Mobile App Development (iOS & Android)
5% UX Research & Usability Testing
5% Wireframing & Prototyping
AI Summary
“Baaz is a Bangalore-based software studio specializing in scalable web and mobile applications across industries like eCommerce, fintech, AI/ML, AR/VR, and ERP, enabling businesses from startup to scale-up with a product-led approach.”
CIMP Tech Company Limited
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We are a digital agency based in Hong Kong that provides LMS and e-commerce solutions for our clients.
Highlights
2-9
Employees
Services Provided+8 Services
10% Custom Web Application Development
9% E-Commerce Development
1% API Development & Integration
5% UX Research & Usability Testing
AI Summary
“CIMP Tech Company Limited is a Hong Kong-based digital agency specializing in delivering comprehensive LMS and e-commerce solutions to support diverse client needs.”
Xe7 Limited LLC
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Xenon7 provides AI transformation focused on results, from strategic planning to operational execution. We integrate data frameworks, AI teams, and reusable tools to achieve measurable effects on a large scale. We cater to organizations that seek tangible outcomes rather than just prototypes.
Highlights
$50,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
50-249
Employees
Services Provided+6 Services
10% AI Strategy & Roadmap Consulting
8% LLM Integration & Prompt Engineering
8% Custom AI Chatbot Development
7% Machine Learning Model Development
AI Summary
“Xe7 Limited LLC specializes in AI transformation, delivering strategic planning and operational execution with integrated data frameworks and tools to drive measurable organizational outcomes at scale.”
TopTech.team
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We enable your organization to excel in the digital realm through smooth software development and adaptable IT staff augmentation. Our experts utilize cutting-edge technologies to facilitate rapid business expansion, boost revenue, mitigate risks, and generate substantial profits. We are committed n
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Rawalpindi, Pk Punjab, Pk
Services Provided+12 Services
8% Mobile App Development (iOS & Android)
8% Custom Web Application Development
5% API Development & Integration
3% SaaS Product Development
AI Summary
“TopTech.team delivers comprehensive IT solutions including software development, UI/UX design, e-commerce, blockchain, AI, and data science, driving business growth through innovation and adaptability.”
Ravn
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We specialize in solving complex software challenges. Our team of over 200 engineers, designers, and technologists collaborates strategically with yours to achieve transformative outcomes. We go beyond simply coding; we elevate your technology vision. We have been trusted partners for years by brand
Highlights
$25,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
50-249
Employees
American Fork, Utah, Us
Services Provided+8 Services
23% Custom Web Application Development
10% Mobile App Development (iOS & Android)
8% UX Research & Usability Testing
10% Product UX Strategy
AI Summary
“Ravn delivers expert software solutions through an engineer-led team, ensuring seamless integration, cost-efficient development, and improved product outcomes for global clients.”
Inbouncy
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Inbouncy — Your AI-Driven Inbound Marketing Agency for Consistent Growth Since 2015, Inbouncy has assisted over 480 businesses across North America and Europe in achieving sustainable growth through AI-powered inbound marketing, sophisticated CRM solutions, and data-driven strategies. Based in New
Highlights
$1,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Services Provided+12 Services
6% AI Strategy & Roadmap Consulting
5% LLM Integration & Prompt Engineering
5% Custom AI Chatbot Development
6% Generative AI
AI Summary
“Inbouncy is a New York-based AI-driven inbound marketing agency offering data-driven strategies, CRM solutions, SEO, automation, and web development to drive sustainable business growth globally.”
Source Digital
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Source Digital is a company located in Perth that specializes in AI services and custom software development, assisting Australian businesses in leveraging artificial intelligence to cut costs, streamline operations, and foster growth. We focus on comprehensive AI implementation, which includes ever
Highlights
$5,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
Clarkson, Western Australia, Au
Services Provided+11 Services
6% Workflow Automation (Zapier / Make / n8n)
5% LLM Integration & Prompt Engineering
5% Machine Learning Model Development
6% Custom AI Chatbot Development
AI Summary
“Source Digital, based in Perth, delivers tailored AI consulting, custom software development, and automation solutions across diverse industries, enhancing business efficiency and growth through practical AI implementation.”

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Top LLM Integration & Prompt Engineering Companies

List of the Best LLM Integration & Prompt Engineering Agencies

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