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

OnPurpose Studio
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At OnPurpose Studio, we assist ambitious businesses in designing, developing, and scaling successful products that cater to diverse markets and languages. We provide the necessary expertise for your vision, covering everything from internationalization (I18N) and localization processes to comprehens
Highlights
$5,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
2-9
Employees
Mount Laurel Township, New Jersey, Us
Services Provided+2 Services
22% Custom Web Application Development
12% Mobile App Development (iOS & Android)
23% Product UX Strategy
10% UX Research & Usability Testing
AI Summary
“OnPurpose Studio partners with businesses to design, develop, and scale products globally, offering expertise in internationalization, localization, and tailored engineering leadership for diverse markets.”
Kodexo Labs
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Your Partner in AI-Native Development. Kodexo Labs specializes in creating web applications, mobile applications, and advanced AI systems that are deployed to production and remain operational. We have successfully launched 51 products and hold a rating of 4.9/5 on Clutch based on 13 verified review
Highlights
$10,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
50-249
Employees
San Francisco, California, Us
Services Provided+3 Services
33% Custom Web Application Development
18% Mobile App Development (iOS & Android)
12% AI Model Fine-Tuning & Training
5% Custom AI Chatbot Development
AI Summary
“Kodexo Labs develops AI-native web, mobile, and advanced AI systems with high client retention and global reach, delivering tailored solutions across multiple industries since 2021.”
InfinityBits
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InfinityBits is a Clutch-recognized leading B2B Software Development Company based in Pakistan. The team at InfinityBits is dedicated to helping businesses of all sizes undergo digital transformation, enabling them to become competitive in the market through innovative software product engineering,
Highlights
$5,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Islamabad, Pk
Services Provided+3 Services
20% Custom Web Application Development
18% Mobile App Development (iOS & Android)
13% SaaS Product Development
15% Custom AI Chatbot Development
AI Summary
“InfinityBits is a leading B2B software engineering firm specializing in custom web and mobile applications, SaaS platforms, AI-driven solutions, and workflow automation to enable digital transformation.”
RipeSeed
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RipeSeed is a passionate and enthusiastic group of tech-savvy individuals who are consistently at the cutting edge of technology. Our team consists of people who genuinely enjoy their work and love coding. It’s widely acknowledged that creating innovative applications is much easier when you are pas
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Lahore, Pk Punjab, Pk
Services Provided+2 Services
20% Generative AI
8% AI Strategy & Roadmap Consulting
15% LLM Integration & Prompt Engineering
7% Cloud Consulting & SI
AI Summary
“RipeSeed is a tech-driven company specializing in cloud solutions, AI, SaaS, web and mobile development, delivering innovative software tailored to diverse client needs since 2021.”
SRM Creative Solutions
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SRM Creative Solutions is a consulting and training firm specializing in AI, aimed at helping small businesses and service-oriented companies comprehend, adopt, and implement artificial intelligence without feeling overwhelmed by technology. We assist business owners and their teams in automating ev
Highlights
$1,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Buffalo, New York, Us
Services Provided+1 Services
20% AI Strategy & Roadmap Consulting
20% LLM Integration & Prompt Engineering
15% Custom AI Chatbot Development
30% AI Agent & Multi-Agent System Development
AI Summary
“SRM Creative Solutions offers practical AI consulting and training, enabling small businesses to automate operations, integrate AI tools, and build independent, efficient workflows nationwide.”
AegisVision
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At AegisVision, we are convinced that AI has the potential to fundamentally change industries and set new standards for what can be achieved. As a committed branch that has developed from the success of Vision Guard AI, we focus on providing top-tier Vision AI solutions aimed at streamlining process
Highlights
10-49
Employees
Hyderabad, Telangana, In
Services Provided
30% AI Strategy & Roadmap Consulting
20% LLM Integration & Prompt Engineering
50% Generative AI
AI Summary
“AegisVision specializes in advanced Vision AI solutions that enhance security, optimize processes, and transform business operations across diverse industries with innovative artificial intelligence technologies.”
Qvolv Technologies
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Qvolv Technologies is a prominent provider of AR, VR, MR, and Digital Twin solutions, assisting organizations in training their teams, streamlining workflows, and enhancing decision-making. Our offerings, including Q-Companion, Q-Connect, and Q-Intel, integrate immersive technology, AI support, and
Highlights
250-999
Employees
Ghaziabad, Uttar Pradesh, In
Services Provided
25% AI Strategy & Roadmap Consulting
18% LLM Integration & Prompt Engineering
7% AI Agent & Multi-Agent System Development
50% Content Marketing Strategy
AI Summary
“Qvolv Technologies specializes in AR, VR, MR, and Digital Twin solutions, enabling diverse industries to enhance training, optimize workflows, and drive innovation through immersive, AI-integrated technologies.”
PRAKTIKAI
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We are transforming the consulting landscape by prioritizing authenticity, respect, and genuine collaborations. Our goal is to provide substantial business value through straightforward, applicable data and AI solutions. We collaborate closely with our clients, serving as trusted advisors to develop
Highlights
$10,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
2-9
Employees
Services Provided+1 Services
30% AI Strategy & Roadmap Consulting
20% Custom AI Chatbot Development
10% Cloud Consulting & SI
25% LLM Integration & Prompt Engineering
AI Summary
“PRAKTIKAI delivers authentic, practical data and AI consulting services, focusing on genuine collaboration and actionable solutions to drive meaningful business value and results.”
InteligenAI
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At InteligenAI, we lead in AI innovation and strive to empower startups, small and medium-sized enterprises, and tech-focused organizations to tap into the full capabilities of AI. Our team consists of experienced AI professionals dedicated to helping businesses succeed. We offer a wide array of AI
Highlights
$5,000+
Min Project Size
10-49
Employees
Gurugram, Haryana, In
Services Provided+1 Services
25% AI Strategy & Roadmap Consulting
20% LLM Integration & Prompt Engineering
15% Custom AI Chatbot Development
25% Machine Learning Model Development
AI Summary
“InteligenAI specializes in comprehensive AI solutions, offering strategy, development, and support services across Generative AI, Computer Vision, Text, Audio, and Document AI to empower diverse businesses.”
Synapis
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Synapis is a no-code platform that enables you to create, train, and deploy AI models completely online, without the need for costly hardware or specialized technical skills. Its purpose is to assist businesses in effortlessly incorporating AI to drive growth, enhance operations, and achieve greater
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Prishtina, Xk
Services Provided
10% AI Strategy & Roadmap Consulting
20% LLM Integration & Prompt Engineering
20% Custom AI Chatbot Development
50% API Development & Integration
AI Summary
“Synapis offers a no-code online platform for creating, training, and deploying AI models, enabling businesses to integrate AI-driven automation and efficiency without specialized skills or hardware.”

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Top LLM Integration & Prompt Engineering Companies

List of the Best LLM Integration & Prompt Engineering Agencies

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