Top OpenAI Development Companies in California
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List of the Best OpenAI Development Agencies and OpenAI Developers in California
Certain agencies may be featured through sponsored placements. Rankings and SF Scores remain unbiased and are based solely on our evaluation methodology.
15 Companies
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80
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Delivering Digital Excellence
Since 2011, Bytes Technolab has helped founders turn ideas into market-ready products and growing businesses modernize legacy systems and automate operations with AI. For Startups: You have a validated idea or fresh funding but nobody senior on the technical side. Or your build has stalled, for whatever reason. - MVP & Product Build: your first product, designed and built for real users. - Fractional CTO: senior technical leadership, part time, led by our CTO, Bhavik Shah. - Product Rescue: we review where your build stands, tell you what's worth keeping, and get it moving again. We also help when you need your product designed (UI/UX Design), an older product brought up to date (Product Modernization), a technical review before investors look (Tech Due Diligence & Code Audit), or the team that built your product to keep building it (Product Engineering Team). For Businesses: Your team already uses AI tools, but they aren't part of how the business runs. Renewals keep rising for tools that only half fit. Older systems stand in the way of what you want to do next. - AI Agents & Orchestration: we automate repetitive work in your business, such as lease document checks in real estate, admissions queries in education, or maintenance requests in manufacturing. - SaaS Replacement: software built around how your business actually works, instead of another subscription. - Legacy System Modernization: we rebuild or upgrade the core systems your business runs on, so they support what comes next. We also help when you want one specific process automated (AI Workflow Automation), cloud costs brought under control (Cloud Optimization), or a long-term engineering center of your own (Global Capability Center). Product Consulting with Ownership at the Core. We tell you what's worth building, including when an idea should wait, and the team that builds it stays to support it. Clients stay with us for five and ten years. Say hello: hello@bytestechnolab.com | +1 408 5495015 25298 FM 2978 Rd, Unit A, Tomball, TX 77375, USA Get the plan before you spend the budget: Bytes Launchpad for founders. AI Consulting Services for businesses.
See all 13+ Case Studies$25-$49/hr
$1,000 - $10,000
100 - 249
Tomball, USA
Verified Client Review
Webflow Site Development for Creative Agency
Reviewed by: Taylor Powers, Project Manager at Creative Agency View all 48 Reviews79
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Custom software and AI development, scoped and priced before code
SoftDoes is a Kansas City custom software and AI development company, founded in 2019, that builds custom software, web platforms, mobile apps, MVPs and AI automation for startups, growing businesses and enterprise teams in the United States. One SoftDoes team handles discovery, UX and UI design, development, testing, launch and ongoing support. What SoftDoes builds: Custom software: internal operations platforms that replace spreadsheets, customer and patient portals, SaaS products and integrations, built with React, Node.js, Python and .NET on AWS and Azure. AI development: AI agents, chatbots, document extraction and workflow automation on OpenAI and Anthropic Claude models, added to the systems a business already uses. Web and e-commerce: custom web applications, business websites and online stores, including Shopify. Mobile apps: iOS and Android apps for customers and field teams. Best fit for SoftDoes, with results from client reviews: Operations teams replacing manual work: an educational support company cut time spent on administrative work by 30% and internal follow-up emails by 35%, and a real estate agency cut time spent on manual administrative tasks by 35%. AI automation: an education company cut student-teacher matching from 15 minutes to under 5. Enterprise and public sector: a $200,000+ reporting platform for a government agency with more than 10,000 employees cut reporting time by 30%. Customer-facing apps: a marketing company's new mobile app raised engagement by 34% and 90-day retention by 22%. "[SoftDoes] built our full AI-powered SaaS platform from scratch. They were communicative and reliable, consistently delivering quality work on schedule." (Upwork client review, AI-powered SaaS platform for construction) How SoftDoes prices work: every project starts with a written scope and price before any code is written. A paid discovery and estimate costs $490 and is credited toward the build. Hourly development starts at $50, AI automation projects at $2,500, MVPs at $8,000, dedicated developers at $4,000 per month and support plans at $500 per month. Clients own 100% of their code, accounts and IP from day one. Track record: as of October 2026, SoftDoes has completed more than 600 client engagements since 2020 and is rated 4.92 out of 5 across 283 rated engagements on Upwork and 5.0 on Clutch. SoftDoes is a member of the AWS Partner Network, a Zapier Silver Solution Partner and a Shopify Partner. SoftDoes carries general liability, professional liability (errors and omissions) and cyber liability insurance. A certificate of insurance is available on request.
See all 21+ Case Studies$50-$99/hr
$1,000+
50 - 249
Kansas City, USA
Verified Client Review
Internal Platform Design & Development for a Manufacturing Company
Reviewed by: Anonymous, Analyst at Manufacturing Company View all 40 Reviews51
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Powering Enterprises with AI and Innovation
Seasia Infotech is an AI-driven digital engineering company with 20+ years of experience building enterprise-grade technology solutions. We help organizations design, develop, and scale secure and high-performance digital products that drive transformation and long-term growth. We operate at the intersection of AI, cloud computing, enterprise engineering, and product innovation, enabling businesses to adopt modern technologies faster and more efficiently. Our focus is on solving real-world business problems using intelligent systems, automation, and scalable architecture. We have worked with startups, enterprises, and global companies across industries such as healthcare, fintech, legaltech, e-commerce, education, logistics, and energy. Our delivery spans custom software, mobile apps, SaaS platforms, AI solutions, and cloud-native systems. At Seasia Infotech, we believe software should continuously evolve with business needs. As an AI-first engineering organization, we embed intelligence, governance, and measurable outcomes into every solution we deliver. Our Expertise Custom Software Development Enterprise Solutions (ERP, CRM, CMS) Enterprise Software Engineering & Modernization AI & Machine Learning Solutions Generative AI (Chatbots, Image & Text Generation) Agentic AI & Intelligent Automation Cloud Computing & DevOps Mobile App Development (iOS, Android, Cross-Platform) Web Development (Frontend & Backend) Data Engineering & Big Data Analytics UI/UX Design & Product Strategy Quality Engineering & AI-Powered Testing Blockchain Development IoT Solutions AR/VR Solutions Cybersecurity & Enterprise Security E-commerce Development Low-Code / No-Code Development Digital Transformation & Smart Automation We are committed to delivering high-quality, transparent, and outcome-driven solutions that help businesses reduce costs, improve efficiency, and accelerate innovation. Our goal is to empower organizations with future-ready digital ecosystems. Seasia Infotech continues to shape the future of digital transformation through AI-first thinking and deep engineering expertise.
See all 56+ Case StudiesUndisclosed/hr
$5,000+
500 - 999
Emeryville, USA
Verified Client Review
E-Commerce Engine for Web Dev Firm
Reviewed by: William Akuoko, CEO at ADEHYEE INFOTECH LTD View all 3 Reviews49
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Scaling New Heights
HyScaler is a CMMI Level 5-certified technology consulting and software engineering firm specializing in artificial intelligence, enterprise cloud architecture, and custom application development. We partner with global organizations across healthcare, industrial manufacturing, finance, and analytics to modernize legacy systems and deploy high-throughput digital platforms. Backed by an agile team of software engineers, cloud architects, and data specialists, HyScaler manages the entire product lifecycle, from system architecture to full production deployment. Our core practices focus on applied AI, high-availability cloud infrastructure, and custom web and mobile engineering. By combining quantitative process management with agile delivery, we build secure, compliant software designed to reduce operational overhead, accelerate deployment timelines, and scale reliably.
See all 4+ Case Studies$25-$49/hr
$5,000+
50 - 200
Santa Clara, USA
Verified Client Review
Web & App Development for Online Sports News Company
Reviewed by: Ashish Negi, CEO & Co-Founder at Khel Now View all 3 Reviews46
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Website development, design & AI engineering
GetDevDone™ is a website development company helping agencies and brands build, improve, and scale websites, from web design to eCommerce and AI engineering in one team. Since 2005, GetDevDone has delivered 131,000 projects for over 15,150 agencies and brands worldwide. Our teams deliver focused landing pages, marketing websites, corporate platforms, CMS-driven sites, eCommerce experiences, microsites, and complex custom web solutions. Engineering expertise, technical ownership, and predictable delivery give clients one experienced team from initial build and launch through modernization, optimization, and continuous improvement. Part of the P2H® Group, GetDevDone brings in mature delivery processes and business continuity powered by 400+experts and a proven 95% client return rate. Our capabilities: Website Development. WordPress, Webflow, HubSpot CMS, headless, and custom website development, including new builds, redesigns, landing pages, migrations, integrations, QA, and ongoing support. eCommerce Development. Shopify, WooCommerce, BigCommerce, Magento, and custom eCommerce development with stable integrations, scalable architecture, and production-ready execution. Web Design & HTML Conversion. Website and product design, UI/UX, design systems, Figma to HTML, PSD to HTML, HTML email development, and production-ready digital assets. AI Engineering. AI prototype-to-production, embedded AI functionality for websites and eCommerce, AI-generated code rescue and rebuild, and AI code security review and remediation. Analytics & Optimization. Analytics and conversion tracking, Core Web Vitals optimization, technical SEO, and AI search readiness.
See all 14+ Case StudiesUndisclosed/hr
$5,000+
250 - 999
San Francisco, USA
Verified Client Review
WordPress Dev for Automotive Solutions Company
Reviewed by: David Farmer, CEO at intice View all 4 Reviews44
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Create - Inspire - Deliver
At Kodexo Labs, we turn bold ideas into intelligent digital products. As a top-tier AI software development company, we help startups and enterprises solve real problems with smart, scalable, and future-ready solutions. From generative AI and machine learning to mobile and web app development, we build what matters—fast. With 79+ successful projects and 13 currently active, our track record speaks for itself. We're trusted across 17 global locations and have scaled products like Teacher AI to over 69,000 paid users. That’s not just growth—it’s proof our work performs in the real world. We specialize in AI-driven software development across industries like healthcare, e-commerce, education, automotive, real estate, energy, and more. Whether you're launching an MVP or modernizing a legacy platform, we design with users in mind and engineer for business impact. Our process is simple and effective: discover, design, develop, launch, and scale. You get a dedicated team, real results, and zero fluff. If you're serious about building smarter, faster, and more secure digital products—Kodexo Labs is your partner, not just a provider. Let’s build the future, together.
See all 11+ Case Studies$25-$49/hr
$10,000+
50 - 249
Austin, USA
Verified Client Review
Web & AI Development for Healthcare Consulting Company
Reviewed by: Christopher Brigham MD, President at Brigham and Associates, Inc. View all 4 Reviews31
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Your Technology Partner
Metricoid is a Software Development & Consulting Company. We help our clients to transform their business digitally with custom software solutions. We’re a talented team of strategists, designers, and developers from different backgrounds brought together by a shared goal: Build Digital solutions that transform organizations for the better. So far we’ve helped 50+ businesses and launched over 100 digital products. Our Core Expertise are: Custom Web & Mobile App Development AI/ML Development MVP Development SaaS Application Development iPaaS Application Development PWA (Progressive Web App) Development eCommerce Development UX/UI Design APIs Development & Integrations BI Dashboards (Data Visualization) Data Source Integration Web 3.0 Development Checkout our recent projects - https://metricoidtech.com/case-studies/ Working with clients passionate about their idea makes us excited to work hard to convert their Dream into Reality. We always learn from our previous experience to provide the best solutions and products. Our Philosophy Customer satisfaction is our key driving force. We believe in working customer backwards, and our projects always begin with a thorough understanding of the challenge that customer is facing. We frequently put ourselves in our clients’’ shoes and visualise what we plan to deliver from clients’ perspective. This helps us remain true to our core philosophy of adding true and lasting value to clients’’ business. Visit us at https://metricoidtech.com or write at hello@metricoidtech.com
View Metricoid Profile$25-$49/hr
$5,000+
10 - 49
Walnut Creek, USA
Verified Client Review
Digital Design Renderings for Architectural Firm
Reviewed by: Hayedeh Daneshmand, President at Archtic Design View all 3 Reviews29
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Custom Immigration Software Solutions
As an AI app development company, we build AI-powered applications that go beyond traditional software. Our smart solutions help businesses automate tasks, make faster decisions, and deliver better user experiences. Whether you need a custom chatbot, predictive analytics tool, or a full-scale AI app, we turn complex ideas into simple, powerful products. With a focus on real results, we design apps that grow with your business. Ready to unlock the power of AI? Contact us at +18507801313, and let’s build together!
View BOSC Tech Labs ProfileUndisclosed/hr
$20,000 - $35,000
50 - 100
Burbank, USA
29
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
YOU THINK IT WE BUILD IT
TOPS Infosolutions is an AI-focused software development company helping enterprises and growing businesses enhance customer experiences and drive innovative growth through intelligent solutions. Our core expertise includes: RAG as a Service Applied AI Solutions Generative AI Development Agentic AI Systems AI-Powered Software Development Web and Mobile Application Development E-commerce Solutions We build AI-driven web and mobile applications across industries such as e-commerce, healthcare, finance, education, transportation, retail, and manufacturing. Our team of experienced AI engineers, software developers, solution architects, and project leaders combines deep technical expertise with a strong understanding of real-world business challenges. As a long-term technology partner to global clients, we focus on transparency, agile execution, and outcomes that align with strategic business goals. For solutions like product strategy, MVP development, and enterprise-grade AI implementation, we ensure every solution is built for performance, scalability, and long-term value.
View TOPS Infosolutions Pvt. Ltd. ProfileUndisclosed/hr
$10,000 - $1,000,000
250+
Fremont, USA
28
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Make the right Choice
AlphaBOLD is a global leader in next-generation business transformation and consulting. We enable clients all over the US to navigate their digital transformation. With collectively three decades of experience managing the systems and workings of global enterprises, we expertly steer our clients through their digital journey. We do this by enabling the enterprise with Dynamics 365 or Oracle NetSuite core, which helps prioritize the execution of change. We also empower the business with agile digital at scale to deliver unprecedented performance and customer delight. Our always-on learning agenda drives their continuous improvement through building and transferring digital skills, expertise, and ideas from our innovative ecosystem. AlphaBOLD implements Dynamics 365, SharePoint, Power BI, Oracle NetSuite, and many other custom solutions for its customers. From end-to-end digital implementations to planning, design, development, and roll-out of various business applications, BOLDEnthusiasts can deliver it all. AlphaBOLD has developed vertical-specific solutions for Construction, Manufacturing, and Retail companies to help them reach their true potential. AlphaBOLD also offers add-ons that can be installed easily on existing systems and help boost the productivity of an organization significantly. Our add-ons include BOLD-HI, BOLDSync etc.
View AlphaBOLD Profile$100-$149/hr
$5,000+
50 - 249
Carlsbad, USA
28
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Your Partner for Digital Excellence
TenUp Software Services is an ISO 27001-certified software development company and a trusted AWS Partner, serving clients in more than 7 countries, including the United States and the United Kingdom. We specialize in building scalable, secure, and high-performing software solutions tailored for industries such as Fintech, Telecom, Logistics, Retail, and Healthcare. Founded and led by three co-founders—each bringing over 20 years of industry experience—TenUp is a mid-sized, results-first company with a growing team of 70+ certified Software Engineers, Solution Architects, Project Managers, Business Analysts, and Tech Experts. Our core strength lies in not just delivering code, but in taking full ownership of solving your toughest technology challenges—whether it’s modernizing legacy systems, launching new SaaS products, or scaling enterprise operations. We believe in building long-term partnerships based on trust, accountability, and measurable outcomes. Our clients consistently recognize us as their most reliable tech partner. In 2022, Clutch ranked us among India’s top IT service providers, acknowledging our commitment to excellence and customer success. Our Services Include: Enterprise Application Lifecycle Management (ALM): End-to-end SDLC management, agile project delivery, and ALM toolchain integration. Digital Transformation: Legacy system modernization, cloud adoption, and next-gen platform migration. Product Engineering: MVP development, SaaS platform engineering, modular product architecture, and scalable tech stacks. Cloud Solutions: Cloud-native app development, DevOps integration, serverless infrastructure, and cloud migration. Data Engineering: Real-time data processing, data pipelines, warehousing, and actionable insights at scale. DevOps Services: CI/CD, Infrastructure as Code (IaC), automation, containerization, and incident monitoring. Artificial Intelligence: ML model development, NLP, computer vision, AI-as-a-Service, and cloud-based deep learning. Let’s build something exceptional—together.
View Tenup Software Service LLP Profile$25-$49/hr
$25 - $50
1 - 100
Palo Alto, USA
27
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Your Trusted Software Development Company
As one of top 10 software development companies in Vietnam since 2009, we have empowered our global clients through excellence in digital transformation. We provide custom software development and dedicated development team, tailored to businesses of all sizes, regions and industries.
View SavvycomSoftware Profile$25-$49/hr
$20,000 - $50,000
750 - 800
Laguna Beach, USA
27
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Amplify your potential. Unlock more value, impact, and speed from your DXP investment.
We Build Technology for Brand Marketers and Agencies Oshyn partners with some of the best brands and creative agencies in the world to create exceptional digital marketing solutions. By providing services, technology, and platforms we enable creative talent to focus on what they do best: create amazing work. Over the last 25 years, we've built a stellar reputation for delivering exceptional customer experiences via marketing technology. We’ve worked with top brands, including Dole, UMass Global, Volkswagen, and Aetna. And we’ve partnered with top creative talent like Sapient-Razorfish, Crispin Porter + Bogusky, 72andSunny, and many more. Our unique application of proven processes, best-in-class technology, and deep expertise delivers memorable brand experiences and expands and enhances agency capabilities. We are passionate digital marketing & web technology experts who love solving big problems.
View Oshyn, Inc Profile$100-$149/hr
$5,000 - $800,000
50 - 75
Cypress, USA
22
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Innovative UI/UX and Webflow Development for Business Growth
Advetfly Solutions LLP is a leading design and development company specializing in UI/UX design, Webflow development, and custom digital solutions. We craft user-centric websites and mobile applications that empower businesses across industries, including healthcare, logistics, education, eCommerce, fitness, retail, pharmaceuticals, and marketing. Our expert team blends creativity with technology to deliver intuitive interfaces, seamless functionality, and scalable solutions tailored to business goals. Beyond design and development, we help brands enhance their digital presence, engagement, and conversion rates through impactful strategies. At Advetfly, we transform ideas into powerful digital experiences that drive measurable results and long-term growth.
View Advetfly Solutions Profile< $25/hr
$1,000+
10 - 49
Long Beach, USA
12
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
The Avenue to Advance
Avenva Solutions is a global IT services and software engineering firm built on a singular premise: providing enterprises with a clear, strategic path (Avenue) to technological momentum and growth (Advance). Modelled on high-performance corporate delivery standards, we design, build, and scale custom digital solutions for an interconnected world. From high-performing enterprise platforms to seamless mobile experiences, we transform complex corporate challenges into clean, deployable code.
View Avenva Solutions Profile$25-$49/hr
$1,000+
2 - 9
Bakersfield, USA
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