Top LLM Development Companies in USA
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Explore Reviewed LLM Development Companies in USA — Find Skilled LLM Developers for Your Project
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165 Companies
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USA
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Your Strategic Partner in Software Development
TechQuarter is a software engineering consultancy focused on delivering measurable business outcomes—not just code. We partner with high-growth startups and established enterprises to solve complex technical challenges with scalable architecture, clean engineering standards, and strategic product thinking. Organizations turn to us when deadlines are critical, legacy systems are holding them back, or innovation must happen fast. Our senior-led teams bring clarity, speed, and technical depth across the entire product lifecycle—from product strategy and UX/UI design to custom web and mobile development, AI/ML solutions, agentic automation, cloud architecture, DevOps, cybersecurity, penetration testing, and QA automation. Stack-agnostic and future-focused, we work across React, Node.js, .NET, Python, Flutter, AWS, Azure, and Kubernetes to design resilient, high-performance systems built for long-term scalability. At TechQuarter, we operate with a consultancy mindset—aligning technology decisions with commercial objectives to deliver sustainable digital growth and lasting competitive advantage.
View TechQuarter LLC Profile$50-$99/hr
$100,000+
50 - 249
Cheyenne, USA
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Where AI Meets Execution
APG Technology is a boutique technology consulting and software development firm that helps businesses leverage AI, automation, and custom software solutions to modernize workflows, streamline operations, and drive sustainable growth. Headquartered in Atlanta, Georgia, APG serves clients across financial services, healthcare, and government sectors, delivering high-impact technology solutions tailored to industry needs. Top custom software development company, leading UX agency, and innovative AI solutions provider, APG blends on-shore product consultants and UX designers with near-shore software engineers and QA teams to provide scalable, cost-effective, and high-quality digital solutions. Our services include product strategy, web and mobile app development, low-code/no-code implementations, AI-powered workflow automation, and staff augmentation via Project Pods or individual consultants. Driven by our core values of empathy and stewardship of client resources, we take a hands-on, collaborative approach to solve complex business challenges, improve employee and customer experiences, and achieve measurable results. With a reputation for being innovative, responsive, and results-oriented, APG Technology is the strategic partner organizations rely on to unlock operational excellence, maximize ROI, and accelerate digital transformation.
View APG Technology Profile$100-$149/hr
$10,000+
2 - 9
Atlanta, USA
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Your Vision, Our Expertise
TechnoSIP is a trusted technology solutions and software development company with over a decade of experience delivering innovative digital products across industries. We specialize in mobile app development (iOS, Android, PhoneGap), enterprise applications, large-scale trading platforms, and eCommerce solutions, built using advanced technologies such as Machine Learning, Big Data, and Natural Language Processing (NLP). Serving startups, SMBs, and Fortune-level financial firms, we help businesses identify and leverage Strategic Inflection Points (SIPs) to drive growth and innovation. Our team combines deep technical expertise with strategic insight to build scalable, high-performance applications. At TechnoSIP, we focus on delivering measurable results, ensuring every solution supports long-term business success.
View TechnoSIP Inc Profile$100-$149/hr
$1,000+
10 - 49
New York City, USA
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Form Follows Function
IMRepublic, founded in 2005 with offices in San Francisco, CA, and Belgrade, Serbia, is a full-stack software development and design agency delivering tailored digital solutions for businesses of all sizes. We specialize in custom software development, enterprise systems, and process optimization to help clients achieve measurable growth. Our client-focused approach combines assessment, design, development, and optimization. We collaborate closely with your team to align technology solutions with business goals, leveraging the latest globally-adopted frameworks and languages while respecting your existing infrastructure. From backend, frontend, and middleware development to complex enterprise integrations, our experienced team advises on the most efficient technology stack to maximize ROI. Whether you need custom software to solve unique business challenges or enhancements to existing systems, IMRepublic provides agile, reliable, and scalable solutions that drive results and streamline operations. We are committed to client success, delivering innovative, high-quality software that boosts performance and revenue.
View IM Republic, Inc Profile$50-$99/hr
$5,000+
10 - 49
San Francisco, USA
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Ordinary People Crafting Extraordinary Things
Softescu is an enterprise technology partner delivering secure, high-performance digital solutions for organizations across Europe and the United States since 2008. We specialize in custom software development, AI integration, and enterprise IT services that enable businesses to modernize operations and drive digital transformation. Our expertise includes Drupal, Angular, and .NET development, enhanced with advanced AI capabilities such as custom language models, intelligent chatbots, and workflow automation. We design and build scalable digital platforms that improve efficiency, enhance user experience, and support business growth. Trusted by global organizations, Softescu adheres to the highest quality and security standards, holding ISO 9001 and ISO 27001 certifications. Our services cover web development, UX/UI design, system maintenance, and AI-driven solutions, all delivered with a strong focus on data protection and compliance. By combining technical excellence with innovation, Softescu helps enterprises create intelligent, future-ready digital ecosystems that deliver measurable results and long-term value.
View Softescu Profile$50-$99/hr
$5,000+
10 - 49
New York, USA
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Digital consulting that makes an impact
Tonic is a values-driven technology agency based in Denver, Colorado, specializing in building secure, high-performing, and scalable enterprise digital platforms. The agency serves organizations that need a strong technology partner to carry out complex digital ecosystems, offering services in technology consulting, custom application development, mobile app development, and staffing. Tonic's cross-disciplinary team of strategists, designers, and engineers focuses on improving the usability, performance, security, and scalability of enterprise applications. Guided by the core values of Do the Right Thing, Get Involved, and Have Fun, Tonic partners with clients ranging from startups to international enterprises to deliver purposeful digital solutions that drive meaningful business impact.
View Tonic Profile$150-$199/hr
$25,000+
10 - 49
Denver, USA
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Elite developers already have a job — hire them fractionally
Fraction is an Atlanta-based fractional engineering firm founded in 2022, providing growing companies and startups with access to senior US-based developers on a part-time, long-term basis. Unlike traditional outsourcing, Fraction taps into the spare capacity of experienced engineers from top technology companies like Apple, Google, and Microsoft, offering a cost-effective alternative that eliminates timezone, cultural, and communication barriers. Every engagement includes project management, product management, and software architecture guidance. Fraction development teams deliver 2.9x the performance of offshore teams at 25% less cost than full-time hires. All developers are 100% US-based with an average of 10 years of experience, and Fraction offers a two-week risk-free trial to new clients.
View Fraction Profile$50-$99/hr
$5,000+
50 - 249
Atlanta, USA
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Web design and staff augmentation solutions for growing businesses
Cidersoft is a technology services company offering web design, web development, and IT staff augmentation to businesses seeking flexible, cost-effective digital solutions. The agency provides both project-based web design and development work and on-demand staffing to augment client technology teams with skilled developers, designers, and project managers. Cidersoft serves a broad range of industries, helping businesses modernize their digital presence and scale their technical capacity without the overhead of full-time hires. With a blend of creative and technical talent, Cidersoft delivers solutions that are practical, scalable, and aligned with each client's specific operational and growth needs.
View Cidersoft - Web Design & Staff Augmentation Profile$50-$99/hr
$10,000+
50 - 249
San Ramon, USA
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
We build premium digital products for ambitious companies
HQ is a product design and development studio specializing in building premium web applications, mobile apps, and digital products for ambitious startups and growing companies. The studio offers a full range of product development services including product strategy, UX/UI design, front-end and back-end engineering, and quality assurance. HQ takes a user-centered, iterative approach to product development, combining strategic thinking with meticulous execution to help clients bring innovative ideas to market. Known for their ability to take complex product requirements from concept to launch efficiently, HQ has built a reputation as a trusted partner for technology-driven businesses seeking world-class digital product quality.
View HQ Profile$100-$149/hr
$25,000+
10 - 49
Ogden, USA
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Build faster with a dedicated development team
MarsDevs is a software development company specializing in providing dedicated remote development teams and custom software development services to startups and growing companies. The firm offers a wide range of development expertise including web development, mobile app development, backend engineering, UI/UX design, and DevOps services. MarsDevs helps businesses scale their technical capacity quickly by providing pre-vetted, highly skilled developers who integrate seamlessly into client teams. With competitive pricing and a flexible engagement model, MarsDevs serves as a cost-effective alternative to in-house hiring for companies needing to accelerate product development without compromising on quality.
View MarsDevs Profile$25-$49/hr
$5,000+
50 - 249
Austin, USA
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
CUSTOMER-LED TECHNOLOGY DESIGNED FOR HUMANS & MACHINES
Deepend is a leading digital experience and product development consultancy that helps organizations maximize the value of their digital investments. Specializing in UX design, digital strategy, product innovation, and technology consulting, the company creates user-centric platforms, seamless processes, and engaging digital experiences that drive measurable business outcomes. By combining deep technical expertise with a strong understanding of human behavior, Deepend delivers solutions that enhance customer engagement, improve operational efficiency, and support digital transformation initiatives. With extensive industry experience, the consultancy partners with businesses to solve complex challenges, accelerate innovation, and create sustainable growth through technology-driven positive change.
View Deepend Profile$150-$199/hr
$25,000+
50 - 249
New York, USA
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Digital Marketing & Software Development Agency
Lenaar Digital LLC is a Boca Raton, Florida-based multinational digital agency delivering end-to-end services in branding, graphic design, digital marketing, web development, and custom software solutions. The firm leverages data-driven research and innovative design methodologies to help businesses launch, build, and scale digital products that compete in both domestic and international markets. With a diverse team spanning the United States and Pakistan, Lenaar Digital combines global talent with local market insight to provide SEO, social media marketing, UI/UX design, and software engineering services that drive transformative growth for startups, mid-market companies, and enterprises across multiple industries.
View Lenaar Digital Profile$25-$49/hr
$1,000+
10 - 49
Boca Raton, USA
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
IoT, Web and Mobile App Development Solutions
IOT WEB LAB LLC is a global digital solutions firm founded in 2019 with U.S. presence in Miami Beach, Florida and development hubs in Kyiv, Ukraine. The company delivers end-to-end software engineering services including web, mobile, and desktop application development, IoT platform integration, machine learning solutions, ERP systems, and enterprise application development. IOT WEB LAB also offers UX/UI design, digital marketing, social media advertising, and QA services—making it a comprehensive technology partner for businesses of all sizes. With over 1,000 specialists and a 4.9-star rating on Clutch, the firm is trusted by clients seeking high-quality, cost-effective, full-cycle digital product development with reliable delivery.
View IOT WEB LAB, LLC Profile$25-$49/hr
$10,000+
1,000 - 9,999
Miami Beach, USA
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
AI that actually works inside your business
KCG (Krukovsky Consulting Group) is a Brooklyn-based IT staff augmentation and e-commerce consulting firm with over 12 years of experience connecting businesses with top-tier technology talent from Eastern and Central Europe. The company maintains a database of 12,000+ vetted IT professionals spanning all major skill levels and expertise domains, with candidate profiles available within 24 hours of initial contact. KCG specializes in building remote software development teams, establishing remote competence centers, and consulting on e-commerce architecture, retail digital transformation, and complex system integrations. Operating across the US and EMEA, KCG is known for direct client engagement without intermediaries, cost-efficient pricing, and long-term relationship-first partnerships.
View KCG Profile$50-$99/hr
$25,000+
10 - 49
St. Petersburg, USA
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Bringing your creative ideas to life through impactful software solutions
NextGen Software LLC offers custom software development and technology consulting services designed to help businesses execute their next project with less stress and lower cost. We understand that software projects often come with unpredictable timelines and budget overruns, so our team focuses on streamlined development processes that reduce friction from planning through deployment. Whether you need a custom application built from scratch, an existing system modernized, or strategic consulting to guide your technology decisions, NextGen Software brings a practical, cost-conscious approach to every engagement. Our goal is to be the development partner that removes complexity rather than adding to it, giving business leaders confidence that their software investment will be well-managed and efficiently delivered. If you're planning a software project and want a team that prioritizes clear communication, predictable costs, and reduced stress throughout the development lifecycle, NextGen Software LLC is built to be that reliable technical partner.
View NextGen Software LLC ProfileN/A
$1,000+
2 - 9
Boca Raton, USA
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