AI-first software development company specializing in custom AI/ML solutions, generative AI, and enterprise automation across 14+ industries.
Top Rated15+ YearsMid-Size
AI/ML DevelopmentAI Chatbot DevelopmentTop 10 Elite
The very best agencies • View detailed Top 10
Agencies 11–25
Strong contenders and rising stars
AI development company founded 2011 providing AI consulting, custom software development, and IT strategy for enterprise clients across sectors.
Top Rated15+ YearsMid-Size
AI/ML Development
Midsize custom software development firm established 2003 providing AI agents, cloud consulting, and comprehensive enterprise solutions.
Top Rated15+ YearsLarge Team
AI/ML Development
Enterprise AI development company with 15+ years experience creating custom AI-powered platforms and GenAI solutions for Fortune 500 companies.
Top Rated15+ YearsMid-Size
AI/ML DevelopmentGenerative AI Development
Top AI development partner with 20+ years and 1000+ projects delivering conversational AI solutions for major brands including Tom Ford and T-Mobile.
Top Rated15+ YearsMid-Size
AI/ML DevelopmentGenerative AI Development
Full-service MVP development company with 600+ completed projects across healthcare, fintech, and logistics sectors.
Top Rated10+ YearsMid-Size
AI/ML DevelopmentCustom Software Development
Digital engineering company transforming legacy environments into agile digital ecosystems through platform unification and cloud-first architecture.
Top RatedGoogle PartnerAWS Partner+4 more
Legacy ModernizationAI/ML Development
Bespoke software development services trusted by Facebook and United Health with expertise in AI, cloud, and data engineering.
Rising StarGoogle PartnerAWS Partner+3 more
Custom Software DevelopmentData Engineering & Analytics
AI consulting and development company incorporating machine learning and AI into client ecosystems with focus on automation and optimization.
Rising Star5+ YearsSmall Team
AI/ML Development
AI consulting agency specializing in data-driven software products with focus on AI ethics and explainable AI for transparency since 2018.
Rising Star5+ YearsBoutique
AI/ML DevelopmentGenerative AI Development
AI-driven digital experiences agency delivering solutions for startups and SMBs with focus on practical AI implementations and user experience.
Rising Star10+ YearsBoutique
AI/ML Development
Innovative IT Solutions Driving Business Success Worldwide
15+ YearsLarge Team
Product Engineering (SaaS)AI/ML Development
AirDev is the global leader in no-code software development. We specialize in building powerful custom web applications in a fraction of time, cost, and effort of traditional agencies through a combination of no-code tools, a high level of standardization, and the top talent in the industry.
10+ YearsMid-Size
Product Engineering (SaaS)AI/ML Development
Remote-first DevOps consultancy providing infrastructure automation, CI/CD services, and cloud-native solutions across US, Canada, and Latin America.
10+ YearsBoutique
DevOps & CI/CDCustom Software Development
Building powerful digital solutions with AI-driven expertise for better business results.
5+ YearsLarge Team
Product Engineering (SaaS)AI/ML DevelopmentComplete Top 25 AI/ML Development Agencies in California
Full numbered list of all 25 agencies
Show listHide list
Complete Top 25 AI/ML Development Agencies in California
Full numbered list of all 25 agencies
- 1.HCLTech — North Carolina
- 2.C3.AI — California
- 3.Bitcot — California
- 4.SoluLab — California
- 5.Turing — California
- 6.Addepto — California
- 7.BotsCrew — California
- 8.Kodexo Labs — California
- 9.Markovate — California
- 10.Rootstrap — California
- 11.Intuz — California
- 12.Innovify — California
- 13.EffectiveSoft — California
- 14.LeewayHertz — California
- 15.Master of Code Global — California
- 16.Matellio — California
- 17.Persistent Systems — California
- 18.Azumo — California
- 19.Hypotenuse Labs — California
- 20.Materialize Labs — California
- 21.XeoDev — California
- 22.A3logics — California
- 23.Airdev — California
- 24.Bluelight Consulting — California
- 25.Dualboot Partners — California
Top 25 AI/ML Development Agencies — FAQ
Common questions about the best ai/ml development agencies in California.
Who is the #1 ai/ml development agency in California in 2026?
As of 2026, the top-ranked ai/ml development agency in California on AgencyCluster is HCLTech, with an AgencyCluster Score of 97/100. Rankings are based on verified evidence across credibility, proof of work, reputation, category specialization, delivery maturity, and freshness. Rankings are updated periodically as new evidence becomes available.
How were the top 25 ai/ml development agencies in California selected?
This list features 25 agencies selected from AgencyCluster's curated directory. Each agency was evaluated using the AgencyCluster Score (0–100), with particular weight on demonstrated expertise in ai/ml development. Only agencies with verified credentials are eligible, and rankings cannot be purchased. The agencies on this list average 15+ years of experience. For full methodology details, see our How We Rank page.
What should I look for when choosing a ai/ml development agency from this list?
Ask about their experience with your specific AI use case (NLP, computer vision, recommendation systems, LLM integration). Check if they have data engineering capabilities — ML models are only as good as the data pipeline. Ask about their approach to model evaluation, bias testing, and production deployment (MLOps). For LLM projects, ask about their experience with prompt engineering, fine-tuning, and cost optimization.
How much do the top ai/ml development agencies typically charge?
AI/ML proof-of-concept projects cost $30K–$100K. Production ML systems with data pipelines and MLOps range from $100K–$500K+. LLM integration projects typically cost $40K–$200K. Ongoing model maintenance runs $5K–$20K/month.
Trusted Rankings
Every agency on this list has been reviewed by our editorial team. Rankings are based on our transparent methodology which evaluates credibility, outcomes, and reputation.
No paid rankingsVerified credentialsUpdated regularly
Found an error? Submit a correction