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

Remote Stack AI
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At Remote Stack AI, we are innovators in AI-based solutions and product development. Our organization leads the way in utilizing artificial intelligence to revolutionize industries and enable businesses to thrive in the digital era.
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Mickleham, Victoria, Au
Services Provided+4 Services
10% AI Strategy & Roadmap Consulting
10% LLM Integration & Prompt Engineering
8% Custom AI Chatbot Development
7% Machine Learning Model Development
AI Summary
“Remote Stack AI specializes in developing innovative AI solutions and products, leveraging artificial intelligence to transform industries and support business growth in the digital age.”
The Data Analysis Bureau
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The Data Analysis Bureau is a company focused on innovation in Data Science and Engineering, particularly in Machine Learning. We leverage Data Science to provide valuable Business Insights. By utilizing cutting-edge analytical techniques and emerging technologies, we offer actionable insights that
Highlights
$10,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
10-49
Employees
London, England, Gb
Services Provided+5 Services
15% AI Strategy & Roadmap Consulting
10% Custom AI Chatbot Development
25% Machine Learning Model Development
5% Conversational AI & Voice Assistant Development
AI Summary
“The Data Analysis Bureau specializes in innovative data science and machine learning solutions, delivering actionable business insights with cutting-edge analytics to support smarter decision-making and value creation.”
Analytics Engines
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We specialize in AI Strategy, Data Science, Data Engineering, and Delivery Enablement. Our team excels not only in developing advanced technology but also in grasping business needs. Our expertise extends beyond AI and data; we evaluate, advise, and help build technological capabilities for you, you
Highlights
$10,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Belfast, Northern Ireland, Gb
Services Provided+5 Services
8% LLM Integration & Prompt Engineering
7% Generative AI
7% Machine Learning Model Development
5% AI Strategy & Roadmap Consulting
AI Summary
“Analytics Engines provides expert AI strategy, data science, and engineering services, combining deep technology and business insight to develop innovative, actionable solutions across diverse challenges.”
Rocbird
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We are a technology and innovation firm focused on Big Data and Artificial Intelligence, assisting medium and large organizations in enhancing their technological capabilities. We link talent with purpose and match challenges with effective solutions. Our goal is to create connections among people,
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Cordoba, Cordoba, Ar
Services Provided+6 Services
8% Generative AI
8% AI Strategy & Roadmap Consulting
7% LLM Integration & Prompt Engineering
5% Custom AI Chatbot Development
AI Summary
“Rocbird is a technology and innovation firm specializing in Big Data and AI, offering staff augmentation and technology solutions to help organizations enhance capabilities and achieve business goals.”
SoluLab
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SoluLab is a leading firm in AI-driven, Blockchain, and Web3 development, focused on creating "AI-First" solutions that transform industry norms. We develop technology ranging from Generative AI and AI agents to blockchain and tokenized platforms, all aimed at achieving tangible business results. Wi
Highlights
$25,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Ahmedabad, Gujarat, In
Services Provided+4 Services
10% Custom Web Application Development
8% Mobile App Development (iOS & Android)
33% Blockchain & Web3 Development
7% AI Strategy & Roadmap Consulting
AI Summary
“SoluLab specializes in AI-first and blockchain development, delivering innovative solutions that accelerate product development, automate workflows, and drive cost-effective results for global clients.”
MetWaves Technologies
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We support businesses of all sizes, from startups to large enterprises, by providing intelligent and innovative digital solutions. We prioritize understanding our clients' needs and strive to meet them. By paying close attention, we ensure our software aligns perfectly with their requirements, enabl
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Ahmedabad, Gujarat, In
Services Provided+2 Services
23% Custom Web Application Development
18% Mobile App Development (iOS & Android)
10% SaaS Product Development
35% Generative AI
AI Summary
“MetWaves Technologies delivers innovative digital solutions and software development across cloud, mobile, AI, and comprehensive technology stacks to meet diverse business needs effectively.”
PioGroup Education Software
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PioGroup Software focuses on EdTech solutions, specializing in the development of custom Learning Management Systems (LMS), SCORM compliance, pre-built tools, tailored modules, instructional design, third-party integrations, and mobile applications. We are receptive to partnering with businesses glo
Highlights
$10,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
50-249
Employees
London, England, Gb
Services Provided+4 Services
30% Custom Web Application Development
15% Mobile App Development (iOS & Android)
5% API Development & Integration
20% Machine Learning Model Development
AI Summary
“PioGroup Education Software delivers tailored EdTech solutions including custom LMS, SCORM compliance, instructional design, and advanced technologies, partnering globally to enhance education and workforce training.”
Whitesmith
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Whitesmith offers complete technical teams and individual experts to organizations looking to enhance their technical abilities quickly. Our adaptable tech resources integrate seamlessly, addressing skill gaps and delivering specialized expertise exactly when and where you require it, helping you ta
Highlights
$50-99/hr
Avg Hourly Rate
10-49
Employees
Services Provided+4 Services
12% LLM Integration & Prompt Engineering
10% Custom AI Chatbot Development
8% IT Staff Augmentation
3% AI Strategy & Roadmap Consulting
AI Summary
“Whitesmith provides adaptable technical teams and expert leaders, including fractional CPOs and CTOs, enabling organizations to address skill gaps and accelerate product, engineering, and AI initiatives efficiently.”
Rapids AI LLC
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Rapids AI LLC is a consulting and development firm that provides comprehensive AI, machine learning, and automation solutions for enterprises, startups, and public sector entities. We merge cutting-edge research with practical engineering to create production-ready AI systems that yield significant
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
St. Petersburg, Florida, Us
Services Provided+5 Services
5% AI Strategy & Roadmap Consulting
10% LLM Integration & Prompt Engineering
8% Custom AI Chatbot Development
5% Machine Learning Model Development
AI Summary
“Rapids AI LLC delivers scalable, production-ready AI, machine learning, and automation solutions across sectors like healthcare, finance, and government, specializing in LLM fine-tuning, voice AI, and computer vision.”
BetterBrain
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BetterBrain creates robust, customizable AI infrastructure tailored to integrate with your current workflow. Our solutions enable you to harness the advantages of AI without disrupting your business operations. **OUR EXPERTISE** BetterBrain's tailored solutions utilize our pre-existing AI infrast
Highlights
2-9
Employees
Services Provided+1 Services
10% AI Strategy & Roadmap Consulting
15% LLM Integration & Prompt Engineering
15% Generative AI
35% Robotic Process Automation (RPA)
AI Summary
“BetterBrain delivers customizable AI infrastructure specializing in enterprise search and context-aware workflow automation, enhancing diverse industries' operations with secure, efficient, and integrated solutions globally.”

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Top LLM Integration & Prompt Engineering Companies

List of the Best LLM Integration & Prompt Engineering Agencies

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