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.

How this list is built

We evaluate companies on verified profile data: services, pricing, locations, and portfolio. Client reviews are being collected. We may earn a fee for some placements. How we rank and verify

2,741 Companies

List of the Best LLM Integration & Prompt Engineering Agencies

R
Rivet Automation
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Rivet Automation Services assists business owners with revenues between $3M and $20M in identifying the lost time and money caused by inefficient systems, and rectifying this through AI and automation. Many companies at this level face similar issues: they are expanding, yet struggle to understand w
Highlights
$1,000+
Min Project Size
2-9
Employees
Hamtramck, Michigan, Us
Services Provided+6 Services
5% AI Strategy & Roadmap Consulting
5% LLM Integration & Prompt Engineering
8% Custom AI Chatbot Development
3% Machine Learning Model Development
AI Summary
“Rivet Automation enhances business efficiency for mid-sized firms by integrating AI-driven marketing attribution, revenue intelligence, and automation to optimize growth and operational transparency.”
ReviveSoft
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
At ReviveSoft, we focus on upgrading and modernizing current software applications, bringing them into the future with advanced Cloud technologies.
Highlights
$1,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Services Provided+8 Services
10% Custom Web Application Development
8% Mobile App Development (iOS & Android)
20% Legacy System Modernization
13% API Development & Integration
AI Summary
“ReviveSoft specializes in modernizing and upgrading legacy software by leveraging advanced Cloud technologies to enhance functionality, efficiency, and future readiness.”
ITSOLUTION24x7
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
🌟 Agency & Freelancer on Upwork, Reviewed by Experts 🌟 Previous clients include: Introducing ITSolution24x7—your reliable ally in digital transformation, offering complete IT solutions that set new benchmarks in the industry. Headquartered in the US and operating worldwide, our ten years of experi
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Services Provided+31 Services
4% API Development & Integration
6% Custom Web Application Development
4% Mobile App Development (iOS & Android)
3% E-Commerce Development
AI Summary
“ITSOLUTION24x7 delivers comprehensive IT solutions including AI development, custom software, cloud infrastructure, and strategic consulting to drive digital transformation globally across diverse industries.”
NSIGHTECH Software Solutions
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
With more than 12 years of experience, NSIGHTECH is a leading provider of comprehensive solutions in data, analytics, technology, software, and digital interfaces. We have established a strong presence across continents, including Asia, the Middle East, Africa, the US, and Europe. As a prominent glo
Highlights
$5,000+
Min Project Size
< $25/hr
Avg Hourly Rate
50-249
Employees
Gurugram, Haryana, In
Services Provided+12 Services
7% AI Strategy & Roadmap Consulting
5% LLM Integration & Prompt Engineering
7% Machine Learning Model Development
3% CRM Consulting and SI
AI Summary
“NSIGHTECH, with 12+ years globally, delivers innovative data, analytics, technology, software, and digital solutions, transforming concepts into real-world value through expert collaboration.”
Buildlab
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
We focus on developing AI-driven SaaS products, MVPs, and comprehensive software solutions, handling everything from initial concept and design to deployment and scaling. Our philosophy is straightforward: prioritize speed, quality, and impactful results. At BuildLab, our experience spans various pr
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided+4 Services
16% Custom Web Application Development
12% API Development & Integration
5% E-Commerce Development
8% Generative AI
AI Summary
“BuildLab delivers AI-powered SaaS products and comprehensive software solutions, emphasizing rapid development, quality, and scalability across diverse digital projects and intelligent systems.”
P
Personal Website - CTO and Technology
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
**Expertise** As an experienced technology leader, I possess extensive knowledge and skills in fostering business growth through technological advancements. Below are some of my key areas of expertise: **Technology Leadership** 1. **Strategic IT Planning:** Developing and implementing strateg
Highlights
Services Provided+5 Services
10% Custom AI Chatbot Development
7% Cloud Consulting & SI
12% LLM Integration & Prompt Engineering
5% AI Strategy & Roadmap Consulting
AI Summary
“Experienced technology leader specializing in strategic IT planning, digital transformation, AI integration, cloud-native engineering, and operational excellence to drive business growth and innovation.”
Softorica
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Softorica Limited is a comprehensive software engineering firm that focuses on cutting-edge digital solutions. We create, develop, and enhance high-performance websites, mobile applications, SaaS platforms, ERP/CRM systems, cloud infrastructure, DevOps pipelines, AI/ML solutions, e-commerce sites, a
Highlights
$5,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
10-49
Employees
Lahore, Pk Punjab, Pk
Services Provided+33 Services
4% Custom Web Application Development
4% Mobile App Development (iOS & Android)
4% SaaS Product Development
3% E-Commerce Development
AI Summary
“Softorica Limited delivers comprehensive software engineering services, specializing in web, mobile, SaaS, ERP/CRM, e-commerce, AI/ML, cloud, DevOps, and blockchain solutions with emphasis on precision and security.”
Donbitt
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Donbitt is a comprehensive software development company that creates scalable and efficient digital products for businesses of all sizes. We focus on delivering tailored software solutions across various industries, assisting everyone from startups needing MVPs to enterprises requiring extensive pla
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Vilnius, Vilnius, Lt
Services Provided+20 Services
5% SaaS Product Development
6% Backend Development
4% Frontend Development
4% API Development & Integration
AI Summary
“Donbitt delivers tailored, scalable software solutions across industries, offering end-to-end services from design to AI, accelerating business growth for startups and enterprises alike.”
Oxrow
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Founded in 2019, Oxrow has become a prominent provider of IT solutions, offering a wide range of services such as web and mobile app development, custom software creation, cloud computing, and CRM consulting. We serve businesses of all sizes and in various industries, from startups to large global o
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Mumbai, Maharashtra, In
Services Provided+11 Services
13% Custom Web Application Development
5% ERP & CRM Development
12% Mobile App Development (iOS & Android)
3% E-Commerce Development
AI Summary
“Oxrow, established in 2019, delivers customized IT solutions including software development, cloud computing, and CRM consulting, serving diverse global clients with innovative and quality services.”
Parivartan AI LLP
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Revolutionizing enterprises with AI, automation, and data intelligence. We design smart ecosystems that connect human ingenuity with AI, converting intricate problems into scalable digital resources.
Highlights
2-9
Employees
Services Provided+7 Services
13% Custom Web Application Development
10% Mobile App Development (iOS & Android)
7% API Development & Integration
3% E-Commerce Development
AI Summary
“Parivartan AI LLP enhances enterprises through AI, automation, and data intelligence, creating smart ecosystems that integrate human insight with technology to simplify complex challenges.”

...

...

...

Latest insights & expert perspectives

Explore data-backed surveys with inputs from top industry experts.

Stated minimum project sizes among the firms listed under software development services on Edverise, with the $50,000 band shaded

Vendor Selection

Questions to Ask a Software Development Agency: Six With Proof

A vetting script for second-round agency calls: six questions, the document each answer has to produce, and what a directory listing or a badge really proves.

Nihar Ranjan Rout

10/31/2026

Three software development quotes of $38,000, $94,000 and $210,000 converted to effective hourly rates of $79, $73 and $87.50

Vendor Selection

How to Compare Software Development Quotes Priced 5x Apart

Three bids for the same build are rarely comparable as written. A normalization checklist, a weighted grid adapted from FAR Part 15.3, and the hourly arithmetic.

Akash Mohapatra

10/31/2026

Chart of minimum project size stated by firms listed under AI agent development on Edverise, with the $50,000 band highlighted

Vendor Selection

AI Agent Development Cost: Build, Tokens, Reliability

An AI agent has three costs. Compute the monthly token bill from published list prices, then set the build quote against what listed firms actually charge.

Santanu Prasad Sahoo

10/31/2026

Check All Our Blogs

One Platform. One Promise. One Trust.

Edverise is building the trusted way to find tech vendors. List your company early, or talk to us about backing the platform.

Top LLM Integration & Prompt Engineering Companies

List of the Best LLM Integration & Prompt Engineering Agencies

R

P

Where buyers look next

Latest insights & expert perspectives

Questions to Ask a Software Development Agency: Six With Proof

How to Compare Software Development Quotes Priced 5x Apart

AI Agent Development Cost: Build, Tokens, Reliability

One Platform. One Promise. One Trust.