Sep 30, 2026Bayesian
Creators of PyMC, the Bayesian library trusted by 35M+ users
Bayesian AI for
High-Stakes Decisions.
PyMC Labs is a Bayesian AI consultancy, founded by the creators of PyMC. We build transparent, accountable decision systems that quantify uncertainty, so your leaders can make high-stakes calls they can defend.
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About PyMC Labs
Bayesian methods for your company's most volatile business variables. We build custom, transparent data science models that help global enterprises forecast market demand, optimize complex supply chains, and manage risk when data is scarce.
More about us
Trusted by 100+ enterprise teams
Open Source Ecosystem
PyMC, PyMC-Marketing, CausalPy, and more: we build the open-source libraries that set the standard for Bayesian AI.
View the ecosystemDeep Expertise
Our team brings together experienced Bayesian specialists across marketing, finance, pharmaceuticals, operations, and other complex industries.
Meet the teamProof in Production
We build Bayesian models that operate in real businesses and deliver measurable, defensible results.
View case studiesOur impact in numbers
35M+Open Source Downloads
100+Enterprise Clients
70+Expert Practitioners
0Black-Box Models Built
Our services
Bayesian expertise for
every stage of growth.
Strategy Consulting
Decision-gap audits and a prioritized Bayesian roadmap.
Learn moreExpert Access Program
On-demand access to senior Bayesian specialists.
Learn moreSolution Delivery
Custom Bayesian models built and deployed in production.
Learn moreEmbedded Teams
Senior Bayesian experts embedded directly within your team.
Learn moreTraining & Courses
Hands-on training in Bayesian modeling, causal inference, and probabilistic programming.
Learn moreStrategy Consulting
Decision-gap audits and a prioritized Bayesian roadmap.
Learn moreExpert Access Program
On-demand access to senior Bayesian specialists.
Learn moreSolution Delivery
Custom Bayesian models built and deployed in production.
Learn moreEmbedded Teams
Senior Bayesian experts embedded directly within your team.
Learn moreTraining & Courses
Hands-on training in Bayesian modeling, causal inference, and probabilistic programming.
Learn moreHelping teams turn uncertainty into confident, measurable decisions.
View all servicesClient case studies
Decisions engineered for measurable impact.
HelloFresh makes every media dollar more measurable
By rebuilding its marketing mix model for greater accuracy, speed, and interpretability, HelloFresh gained clearer channel-level insights and more reliable evidence for media investment decisions.
60%lower prediction variance
Read the story
E-commerceMarketing analytics
“PyMC Labs transformed our marketing measurement, we now have full uncertainty bounds on ROI and can confidently optimize $200M+ media spend.”
H
Head of Data Science
HelloFresh
“The Bayesian approach gave us insights our frequentist models never could. They changed how our entire analytics organization operates.”
CP
VP Analytics
Colgate-Palmolive
“World-class Bayesian expertise with genuine research rigor. They understand our domain deeply and translate it into real scientific advances.”
SI
Director of Research
SALK Institute
“The uncertainty quantification alone changed how we present forecasts to the board. Every number now comes with the context it deserves.”
H
Head of Analytics
Haleon
“We cut model iteration time by 60% after adopting the Bayesian workflow PyMC Labs introduced. Game-changing for our team.”
IA
Principal Data Scientist
Indigo Agriculture
Proven impact across marketing, finance, and consumer goods.
View all case studiesTraining courses
Learn Bayesian from the people who built it.
Enrolling
Online · Live + recordings
Master Agentic Data Science
Learn how Bayesian methods and modern AI techniques work together to build reliable, data-driven agentic systems.
Enroll nowEnrolling
Online · Live + recordings
Applied Bayesian Modeling
Develop a solid foundation in Bayesian statistics, inference, model building, and practical workflows using PyMC.
Enroll nowWaitlist
In-person
Probabilistic Programming and Bayesian Modeling with PyMC
Build Bayesian models with PyMC through hands-on exercises covering model specification, inference, diagnostics, and interpretation.
Join waiting listWaitlist
Online · Live + recordings
Bayesian Marketing Analytics
Learn how Bayesian methods can improve marketing measurement, media mix modeling, and decision-making under uncertainty.
Join waiting listPractical Bayesian skills you can put to work right away.
View all coursesBlog
Latest industry insights
and research.
Sep 14, 2026Bayesian
Run Bayesian Marketing Mix Modeling in Your Browser
Sep 3, 2026Bayesian
Why Your Marketing Mix Model Should See the Funnel
Research, guides, and perspectives from the PyMC Labs team.
View all postsBayesian AI uses probabilistic models to learn from data, make predictions, and recommend actions while explicitly quantifying uncertainty.
PyMC Labs was founded by the creators of PyMC and related open-source Bayesian tools. The company focuses on custom, transparent, mathematically rigorous systems instead of generic black-box AI models.
PyMC Labs works across marketing, consumer goods, pharmaceuticals, retail, financial services, sports, agriculture, gaming, and other industries where decisions must be made under uncertainty.
Agentic data science uses AI agents to automate parts of the data science workflow, from analysis and modeling to evaluation and reporting. PyMC Labs applies it with Bayesian methods so outputs remain uncertainty-aware, auditable, and aligned with business goals.
PyMC Labs engagements are tailored to your team, technical needs, and business goals. We can help define a Bayesian strategy, provide access to senior experts, build and deploy custom solutions, embed specialists within your team, or train your organization. Most engagements begin with a conversation to understand the problem and determine the right approach.