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

Tekxai
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Tekxai is a comprehensive digital innovation studio focused on advanced mobile and web custom software development, enhanced by AI, designed for scalability, and customized to fit your business needs. At Tekxai, we create more than just apps; we develop intelligent, scalable platforms that drive gro
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+1 Services
28% Custom Web Application Development
23% Mobile App Development (iOS & Android)
22% Custom AI Chatbot Development
15% Machine Learning Model Development
AI Summary
“Tekxai is a digital innovation studio specializing in custom scalable mobile and web software development enhanced with AI, serving diverse industries from startup MVPs to enterprise solutions.”
Kuaray Tech
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At Kuaray Tech, we go beyond simply creating applications; we develop Agent-Ready Ecosystems. As the industry transitions from traditional software to autonomous intelligence, we offer the architectural guidance necessary to seamlessly integrate AI into the heart of enterprise operations, ensuring s
Highlights
$10,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
2-9
Employees
Dresden, Saxony, De
Services Provided+2 Services
25% Custom Web Application Development
15% API Development & Integration
10% Mobile App Development (iOS & Android)
20% AI Agent & Multi-Agent System Development
AI Summary
“Kuaray Tech develops secure, scalable AI-native ecosystems integrating autonomous multi-agent systems and cloud infrastructure to transform enterprise operations with advanced, production-ready AI solutions.”
aQb Solutions Pvt Ltd
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We take pride in our 10-year legacy, built through dedicated efforts to understand and advocate for various frameworks, including the mean framework. We've formed successful partnerships with AWS and FileMaker, earning recognition as one of the top software solutions providers in NASSCOM. Our operat
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Kolkata, West Bengal, In
Services Provided+2 Services
50% Mobile App Development (iOS & Android)
15% Cloud Consulting & SI
5% LLM Integration & Prompt Engineering
8% AI Strategy & Roadmap Consulting
AI Summary
“aQb Solutions Pvt Ltd offers expert AI, cloud development, IT transformation, and analytics services across healthcare, finance, and more, partnering with AWS to drive scalable digital innovations globally.”
Geeks Invention LLC
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Geeks Invention is a prominent software development and IT consulting firm that specializes in creating custom web, SaaS, AI engineering, and mobile applications. Their skilled team of engineers, designers, and management professionals enables them to provide high-quality solutions that assist clien
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Raipur, Chhattisgarh, In
Services Provided+6 Services
15% Custom Web Application Development
10% Mobile App Development (iOS & Android)
10% Backend Development
10% Frontend Development
AI Summary
“Geeks Invention LLC is a software development and IT consulting firm specializing in custom web, SaaS, AI, and mobile applications using advanced technologies to deliver end-to-end solutions for diverse clients globally.”
Moravio
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Moravio transforms intricate concepts into functional software that enhances revenue and keeps you ahead of the curve. We collaborate closely with your team as a long-term partner, providing guidance throughout the entire process, from discovery and UX to launch, cloud scaling, and ongoing enhanceme
Highlights
$25,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
50-249
Employees
Prague, Cz
Services Provided+10 Services
15% API Development & Integration
8% E-Commerce Development
18% Custom Web Application Development
10% Mobile App Development (iOS & Android)
AI Summary
“Moravio delivers tailored software solutions including web, mobile, AI tools, and cloud services, collaborating closely to drive business growth across diverse industries with flexible engagement models.”
Chudovo
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Chudovo is a custom software development firm specializing in the implementation of complex systems. Our clients trust our expertise and value our transparency regarding timelines, budgets, work progress visibility, and support in meeting their business goals with high-quality solutions. Our teams a
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Castrop-Rauxel, De
Services Provided+6 Services
15% Custom Web Application Development
10% Mobile App Development (iOS & Android)
10% API Development & Integration
8% E-Commerce Development
AI Summary
“Chudovo is a reliable custom software development company delivering over 190 projects across multiple sectors, specializing in complex, innovative web, mobile, cloud, AI, and embedded solutions.”
Turing
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Turing is a company focused on AGI infrastructure that creates and implements generative AI products and solutions for organizations dealing with intricate data. Our platforms and team are relied upon by international businesses to address their challenges related to human intelligence.
Highlights
$50,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
250-999
Employees
Palo Alto, California, Us
Services Provided+4 Services
18% Generative AI
8% AI Strategy & Roadmap Consulting
7% Machine Learning Model Development
5% Custom AI Chatbot Development
AI Summary
“Turing develops AGI infrastructure and generative AI solutions for global organizations, enabling them to effectively manage complex data and human intelligence challenges.”
Webethics
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At Webethics Solutions, we collaborate with startups and expanding businesses to convert ideas into effective digital solutions. Whether you're testing your MVP, developing a comprehensive SaaS platform, incorporating AI/ML, or launching a feature-rich eCommerce site, we are your end-to-end developm
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Sahibzada Ajit Singh Nagar, Punjab, In
Services Provided+10 Services
10% Custom Web Application Development
8% Mobile App Development (iOS & Android)
7% SaaS Product Development
5% E-Commerce Development
AI Summary
“Webethics delivers secure, scalable digital solutions across software development, AI integration, and UI/UX design, serving startups and enterprises with custom web and mobile applications.”
Unico Connect
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Unico Connect is a software development company that specializes in AI-driven solutions, creating smart digital products for startups, mid-sized businesses, and large enterprises around the globe. Why opt for Unico Connect? Discover our main services.
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Mumbai, Maharashtra, In
Services Provided+6 Services
10% Custom Web Application Development
8% Mobile App Development (iOS & Android)
10% API Development & Integration
12% SaaS Product Development
AI Summary
“Unico Connect specializes in AI-driven software development, delivering intelligent digital products and tailored solutions to startups, mid-sized companies, and large enterprises globally.”
Dot Com Development
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Dot Com Development specializes in creating and developing modern web, mobile, cloud, and AI solutions for businesses seeking dependable delivery of high-quality digital products. We build digital platforms, SaaS applications, mobile apps, enterprise websites, and intelligent automation systems that
Highlights
$10,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Scottsdale, Arizona, Us
Services Provided+7 Services
10% Mobile App Development (iOS & Android)
13% Custom Web Application Development
10% SaaS Product Development
8% E-Commerce Development
AI Summary
“Dot Com Development delivers high-quality web, mobile, cloud, and AI solutions across industries with expert teams, ensuring reliable, end-to-end digital product development and support.”

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Top LLM Integration & Prompt Engineering Companies

List of the Best LLM Integration & Prompt Engineering Agencies

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