PYMC LTD
PYMC LTD (PyMC Labs) is an Estonia-registered Bayesian AI consultancy, founded in 2019 by the creators of the PyMC probabilistic programming framework, serving enterprise clients across consumer goods, pharma, media, and nonprofit sectors with consulting, open-source tooling, and paid training courses.
- Company typePrivate
- Founded2019
- HeadquartersCity Of London, United Kingdom
- Headcount11–50
- GTM typeB2B
- OfferingServices
What PYMC LTD does
PYMC LTD (PyMC Labs) is a Bayesian AI consultancy founded in 2019 and officially registered in Tallinn, Estonia, with additional operations in Boston, US. The company was founded by Thomas Wiecki, Chris Fonnesbeck, and Luca Fiaschi, who are also the original creators of PyMC, a leading open-source probabilistic programming framework that has been under NumFOCUS fiscal sponsorship since 2016. The firm serves enterprise clients across consumer goods, pharmaceuticals, media, and nonprofit/academic sectors, with disclosed customers including Colgate-Palmolive, Haleon, HelloFresh, Fabletics, Fox Entertainment, Akili, Roche, Bain & Company, and the Gates Foundation.
The company's core technology stack consists of PyMC (probabilistic programming), Bambi (Bayesian additive models), PyMC-Marketing (marketing mix modeling, customer lifetime value including Pareto/NBD, choice modeling), and CausalPy (causal inference). The firm has integrated its tooling with every major frontier LLM provider—OpenAI, Anthropic, Google Vertex AI, Groq, xAI, and Fireworks AI—and in September 2025 launched the LLM Price Is Right Benchmark, an open-source evaluation suite for LLM agent negotiation. The team's ~17 members are hired from senior engineering and research roles at Apple, Amazon, Google, and Microsoft.
PyMC Labs operates a hybrid business model combining (1) enterprise consulting and custom modeling engagements, (2) paid training courses priced at $1,499–$1,900 per participant, with a cumulative alumni network of 1,000+, and (3) open-source product stewardship that functions as marketing and community-building infrastructure. The company operated bootstrapped for five years from founding and is currently raising a Series A.
PYMC LTD firmographics
Firmographics- Name
- PYMC LTD
- Legal name
- PyMC Labs
- Website
- https://pymc-labs.com
- Company type
- Private
- Founded year
- 2019
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- PYMC LTD (PyMC Labs) is an Estonia-registered Bayesian AI consultancy, founded in 2019 by the creators of the PyMC probabilistic programming framework, serving enterprise clients across consumer goods, pharma, media, and nonprofit sectors with consulting, open-source tooling, and paid training courses.
- Ownership category
- akta.pro rank
PYMC LTD industry classification
Industry- Product category
- Bayesian AI consulting and probabilistic programming
- NAICS
- Software Publishers (51321), Other Management Consulting Services (541618)
- SIC
- Services-Prepackaged Software (7372)
- akta.pro primary industry
- Model Testing, Validation & Quality Assurance (HDAAABAH)
Keywords
Where PYMC LTD is headquartered
LocationHeadquarters
- HQ city
- City Of London
- HQ country
- United Kingdom
- HQ region
- Europe
Markets served
PYMC LTD business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Technology or R&D, Marketing or Sales, Operations, Others
Revenue model
- Bayesian AI Consulting & Advisory Services: Custom consulting engagements for organizations needing Bayesian modeling expertise, including model development, technical advising, and roadmap acceleration. Engagements range from project-based work to ongoing advisory relationships.
- Educational Courses - Cohort Programs: Live cohort courses taught by PyMC developers including Applied Bayesian Modeling ($1,499-$1,699), Master Agentic Data Science ($1,900), and Bayesian Marketing Analytics. Delivered via 2-hour live sessions twice weekly over 4 weeks.
- In-Person Workshops: Intensive 2.5-day in-person workshops on Probabilistic Programming and Bayesian Modeling with PyMC, taught by the team who builds it.
- Expert Access Program (EAP): Ongoing access program providing data science teams with expert support for PyMC, PyMC-Marketing, and CausalPy challenges. Available in Base and Pro tiers with different service levels.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | One time/ perpetual license | Applied Bayesian Modeling Course - 4-week cohort |
| Subscription | One time/ perpetual license | Master Agentic Data Science - 2-week intensive |
| Subscription | Annual | Expert Access Program - Base Tier |
| Subscription | Annual | Expert Access Program - Pro Tier |
Go-to-market motion2 records
Distribution channels4 records
Marketing channels6 records
PYMC LTD product offering
Product offeringCore offering
PyMC Labs is a Bayesian AI consultancy that sells bespoke Bayesian modeling consulting engagements, an annual subscription Expert Access Program, and cohort-based training courses (Applied Bayesian Modeling, Master Agentic Data Science, Bayesian Marketing Analytics, in-person PyMC workshops). The firm also maintains and distributes three open-source Python packages — PyMC, PyMC-Marketing, and CausalPy — that underpin its service delivery and serve as free distribution assets, plus the LLM Price Is Right benchmark for evaluating generative models.
Product overview
PyMC Labs is a Bayesian AI consultancy founded by the creators of PyMC, offering a portfolio of open-source software products and professional services. The core product suite includes PyMC (probabilistic programming framework), PyMC-Marketing (Bayesian media mix modeling and CLV), CausalPy (quasi-experimental causal inference), and the LLM Price Is Right Benchmark. These open-source tools are complemented by professional services including expert access consulting, training courses (Applied Bayesian Modeling, Master Agentic Data Science, Bayesian Marketing Analytics, in-person PyMC workshops), and custom project engagements.
Differentiator
Problem solved
Functional benefit
Brands
- PyMC-Marketing: Open-source Bayesian marketing analytics package for media mix modeling (MMM) and customer lifetime value (CLV).
- CausalPy
- PyMC
- Expert Access Program (EAP)
- LLM Price Is Right Benchmark
Products and services
- PyMC
- PyMC-Marketing
- CausalPy
- LLM Price Is Right Benchmark
- Applied Bayesian Modeling Course
- Master Agentic Data Science Course
- Bayesian Marketing Analytics Course
- Probabilistic Programming and Bayesian Modeling with PyMC Workshop
- Expert Access Program (EAP)
- Bayesian Consulting Services
Quantifiable outcome
- 60x speedup in A/B test processing (5-6 hours to 5-6 minutes) for HelloFresh
- +2 more outcomes
Companies that use PYMC LTD
Customer profileNamed customers13 records
Segments4 records
Ideal customer profiles3 records
PYMC LTD technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration6 records
AI capability7 records
Feature7 records
PYMC LTD partnerships and signals
Strategic signalScale indicators6 records
Recent moves6 records
Expansion highlights5 records
PYMC LTD competitors and assessment
Company assessmentEmerging players
- Hex Technologies: Hex is a collaborative data science notebook platform with AI-assisted analysis features. It targets the same data science and analytics persona as PyMC Labs' courses and EAP, particularly in marketing analytics and experimentation.
- Hugging Face: Hugging Face is the leading open-source AI model hub and community platform. It shares PyMC Labs' playbook of monetizing an open-source developer community through paid enterprise services and is a likely competitor for data science team attention and budget.
Broad incumbents
- Domino Data Lab: Domino provides an enterprise MLOps platform with model development, deployment, and governance. It targets the same enterprise data science teams PyMC Labs serves, but at a much broader platform layer rather than a probabilistic-programming specialty.
- Databricks: Databricks is a unified data and AI platform with consulting, training, and a large open-source footprint (MLflow, Delta Lake). It competes with PyMC Labs in the broader enterprise AI services space and could absorb Bayesian workloads into its Lakehouse platform.
- Weights & Biases: Weights & Biases offers experiment tracking, model registry, and MLOps tooling used by enterprise ML teams. It competes for the same data science budget and is a likely substitute for firms that choose to buy rather than build Bayesian infrastructure.
Direct peers
- PyMC (open-source project): The upstream PyMC project on GitHub is maintained by the PyMC Labs founders and is the de facto reference for Bayesian modeling in Python. As an open-source community rather than a commercial entity, it is itself a peer in the sense that PyMC Labs' monetization depends on this project's continued adoption.
- Anaconda: Anaconda distributes Python-based data science packages and offers enterprise platform, training, and support services. It shares the same playbook of monetizing an open-source Python community through paid offerings and serves the same enterprise data science buyer.
- Posit (RStudio): Posit (formerly RStudio) sells commercial open-source data science tooling (RStudio, Shiny, Positron) and enterprise support. Like PyMC Labs, it is built on top of a widely adopted open-source language/package and converts open-source usage into paid enterprise tiers and training — the closest direct analog in go-to-market and product strategy.
Others
- NumFOCUS: NumFOCUS is the fiscal sponsor of PyMC and many similar open-source projects. While not a commercial peer, it shares the open-source sustainability mandate and is a direct stakeholder in PyMC's governance.
- Anthropic: Anthropic is a frontier AI lab whose Claude models are integrated into PyMC Labs' LLM Price Is Right benchmark. While not a direct competitor, it represents a class of well-capitalized AI labs whose models increasingly encroach on the statistical reasoning work PyMC Labs monetizes.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat4 records
Key risks6 records
Key highlights6 records
Customer concentration
PYMC LTD social profiles
Digital presencePYMC LTD financial estimates
Financial estimateRevenue estimate
Valuation estimate
PYMC LTD leadership team
Management profileNumber of profiles
Profiles15 records
PYMC LTD funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
PYMC LTD M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about PYMC LTD
What does PYMC LTD do?
PyMC Labs is a Bayesian AI consultancy that sells bespoke Bayesian modeling consulting engagements, an annual subscription Expert Access Program, and cohort-based training courses (Applied Bayesian Modeling, Master Agentic Data Science, Bayesian Marketing Analytics, in-person PyMC workshops). The firm also maintains and distributes three open-source Python packages — PyMC, PyMC-Marketing, and CausalPy — that underpin its service delivery and serve as free distribution assets, plus the LLM Price Is Right benchmark for evaluating generative models.
Is PYMC LTD a public or private company?
PYMC LTD is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was PYMC LTD founded?
PYMC LTD was founded in 2019. It employs 11 to 50 people.
Where is PYMC LTD based?
PYMC LTD is headquartered in City Of London, United Kingdom, in the Europe region.
How does PYMC LTD make money?
Four revenue lines are on record. Bayesian AI Consulting & Advisory Services are the primary driver. The others are educational Courses - Cohort Programs, in-Person Workshops and expert Access Program (EAP).
Who are PYMC LTD's main competitors?
Emerging players on record are Hex Technologies and Hugging Face. Broad incumbents are Domino Data Lab, Databricks and Weights & Biases. Direct peers are PyMC (open-source project), Anaconda and Posit (RStudio). Others are NumFOCUS and Anthropic.
Does PYMC LTD have an API?
Yes. The LLM Price Is Right benchmark provides an OpenAI-compatible API endpoint for model submissions. Models must respond with JSON containing a bid and rationale. The benchmark uses OpenAI-compatible response format: client.chat.completions.create() with model, messages, and max_tokens parameters. The framework supports multiple LLM backends including OpenAI, Anthropic, Google, Groq, xAI, and Fireworks for running evaluations. Developer documentation is at www.pymc-labs.com/benchmark/LLMPriceIsRight/add-model.
What industry is PYMC LTD in?
PYMC LTD's product category is Bayesian AI consulting and probabilistic programming. Its primary akta.pro industry code is HDAAABAH, Model Testing, Validation & Quality Assurance. Its NAICS code is 51321 and its SIC code is 7372.