Weights & Biases users list

Email list of companies using Weights & Biases

Q: How many companies use Weights & Biases?

Data InfoMetrix tracks 5,002 companies using Weights & Biases, with 22,547 verified contacts at those accounts as of October 2026. The largest groups are Foundation Model Labs, Autonomous Vehicles and Biotech AI. Counts are estimates from our database and market research, so ask us for a live count for your exact criteria.

Q: Who buys and manages Weights & Biases inside a company?

Weights & Biases is usually owned by ML Experimentation & LLM Development. Decision-makers include VP of AI / ML, CTO and Head of Data Science; ML Platform Lead and Staff ML Engineer shape the choice, and ML Engineers and Data Scientists use it day to day. Our Weights & Biases list can include any of these roles.

Q: Which Weights & Biases products or editions can I target?

You can target accounts by the Weights & Biases products they run, including W&B Models (Experiment Tracking), W&B Weave (LLM Evaluation), W&B Registry, W&B Sweeps and W&B Dedicated Cloud. Tell us which edition or module matters and we filter the list to those accounts.

Q: What other software do Weights & Biases customers use?

Weights & Biases customers commonly also run PyTorch, Hugging Face, Kubernetes, AWS and CoreWeave. We can filter any list by this kind of stack overlap.

Q: What are the main alternatives to Weights & Biases?

The main alternatives to Weights & Biases are MLflow, Comet and Neptune.ai. We also keep verified user lists for MLflow, which is useful for competitive displacement campaigns.

Q: When are Weights & Biases customers most likely to buy?

Buying triggers we track for Weights & Biases accounts include training run scale-up, LLM product launch, MLOps tool review and research team growth. A common pain point is tracking large training runs: expensive runs need visibility.

Q: Can Data InfoMetrix deliver a free sample Weights & Biases contact list before ordering?

Yes. Data InfoMetrix delivers a complimentary 10-record sample tailored to your target Weights & Biases criteria—including target job titles, company size, and region—delivered within one business day with no obligation.

Q: How does Data InfoMetrix guarantee email deliverability for Weights & Biases contacts?

Data InfoMetrix provides a 99% email deliverability guarantee on all Weights & Biases datasets. Every contact record undergoes real-time email verification within a 30 to 45-day refresh cycle, backed by a 1:1 hard bounce replacement policy for 30 days after delivery.

Reach ML research and platform leaders using Weights & Biases (CoreWeave) for experiment tracking, model registry and LLM evaluation with Weave.

5,002+Companies

22,547+Contacts

Updated Oct 7, 2026GDPR · CCPA99% accuracy

See sample data

Free Weights & Biases count + 10 sample records

5,002+ companies · 22,547+ contacts available

✓Exact count for your titles, regions and company size
✓10 verified sample records to check quality
✓Price quote within 1 business day

Trusted by B2B and enterprise revenue teams

How many companies use Weights & Biases?

Data InfoMetrix tracks 5,002+ companies running Weights & Biases as of October 2026, with 22,547+ verified contacts at those accounts. The largest groups are Foundation Model Labs, Autonomous Vehicles and Biotech AI. Buying decisions usually sit with the VP of AI / ML, CTO and Head of Data Science. Counts are estimates built from technology footprint scans, job-post signals and partner directories, checked by our research team. How we count

Tracked accounts5,002+

Organizations detected running Weights & Biases.

Verified contacts22,547+

Direct emails and phone dials for decision-makers.

Primary personasHead of ML Research, ML Platform Lead, VP of AI

Full buying committee mapped.

Deliverability SLA99%

SMTP-verified, with 1:1 replacement of any email that hard bounces within 30 days.

Data specification · Updated Q4 2026

Technology category	AI Infrastructure & LLM Ops
Tracked organizations	5,002+ verified accounts worldwide
Decision-maker contacts	22,547+ records with emails, mobile and direct dials
Key roles	Head of ML Research, ML Platform Lead, VP of AI, platform administrators, IT directors, procurement
Geography	180+ countries · country-by-country counts on request
Verification	DNS and script telemetry, 5-stage SMTP handshake, manual research
Refresh cadence	Continuous, 30–45 day maximum record age at delivery
Compliance	GDPR, CAN-SPAM, CCPA and CASL
Delivery	24–48 hours as CSV, XLSX or CRM API

Editorial & verification

Researched by the Data InfoMetrix research team. Counts updated October 2026.

How we count and verify data

Size your Weights & Biases audience

Pick a region, company size and buying role to estimate how many accounts and contacts you can reach.

Region

Company size

Buying role

Estimated segment✓ 99% SLA

5,002+Target accounts

22,547+Direct contacts

Decision-makers35%

Influencers45%

End users20%

Estimates from our current Weights & Biases dataset. Exact counts come with your quote.

Reach the whole buying committee

A Weights & Biases account is not one contact. We map the people who evaluate, buy, run and use it across ML Experimentation & LLM Development.

Decision-makersC-suite & sponsors

VP of AI / MLCTOHead of Data ScienceChief AI Officer

Influencers & adminsEvaluate & configure

ML Platform LeadStaff ML EngineerMLOps ManagerAI Product Manager

End usersRun it every day

ML EngineersData ScientistsAI EngineersResearch Scientists

These are examples. We build records for any department, seniority or custom title.

See exactly what you get

Every record carries 60+ fields, from verified email, direct dial and LinkedIn to full postal address, Weights & Biases edition, coexisting stack and intent.

Contact	Buying role	Work email	Direct dial	Company phone	Fax	LinkedIn profile	Company	LinkedIn company page	Industry	Address 1	Address 2	City	State	ZIP code	Country	Weights & Biases footprint	Intent	Status
ATDr. Aris ThorneChief AI Officer (CAIO)	Decision Maker	a.th**@cogniti*****.io	+1 (415) 55*-**	+1 (415) 55*-**	+1 (415) 55*-**	linkedin.com/in/a*s-th******	CognitiveScale Enterprise AI Systems Inc.	linkedin.com/company/cognitivescale-ai	Applied AI & Autonomous Agent Platforms	100 Pine St	Ste 2400	San Francisco	CA	94111	United States	LangSmith Enterprise LLM Observability & Testing Platform	High	✓ Verified 2026
NSNaveen SwaminathanVP of AI Engineering & LLMOps Architecture	Decision Maker	n.swa***@synapse*****.com	+1 (617) 55*-**	+1 (617) 55*-**	+1 (617) 55*-**	linkedin.com/in/n*en-swa*******	Synapse Biotech AI Discovery Inc.	linkedin.com/company/synapse-biotech-ai	Biotechnology & Computational Drug Discovery	500 Technology Square	—	Cambridge	MA	02139	United States	LangSmith Token Latency, Cost Tracking & Token Budget Guardrails	High	✓ Verified 2026
HLHannah LindqvistHead of Semantic Search & Vector Retrieval	Decision Maker	h.lin**@stockh***.se	+46 (8) 55*-**	+46 (8) 55*-**	+46 (8) 55*-**	linkedin.com/in/h*ah-li*******	Stockholm Neural Search Solutions AB	linkedin.com/company/stockholm-neural-search	E-Commerce Semantic Search & Discovery	Sveavägen 44	—	Stockholm	Stockholm County	111 34	Sweden	LangSmith Prompt Playground & Automated Regression Test Suites	High	✓ Verified 2026
CVCameron VanceLead Machine Learning Infrastructure Architect	Influencer	c.va**@apexfin****.com	+1 (212) 55*-**	+1 (212) 55*-**	+1 (212) 55*-**	linkedin.com/in/c*ron-v*******	Apex FinTech Neural Analytics LLC	linkedin.com/company/apex-fintech-neural	Financial Market Prediction & Fraud Telemetry	1301 Ave of the Americas	—	New York	NY	10019	United States	LangSmith Hallucination & Faithfulness Evaluation Benchmarks	High	✓ Verified 2026
ERDr. Evelyn RousseauDirector of Applied NLP & RAG Systems	Influencer	e.rou**@parishe****.fr	+33 (1) 45*-**	+33 (1) 45*-**	+33 (1) 45*-**	linkedin.com/in/e*yn-ro*******	Paris Clinical Intelligence Labs SAS	linkedin.com/company/paris-clinical-ai	Clinical Decision Support & Biomedical NLP	15 Boulevard Saint-Germain	—	Paris	Île-de-France	75005	France	LangSmith Multi-Agent Workflow Debugging & Execution Graph	Medium	✓ Verified 2026
DCDarren CrossHead of Developer Experience & AI Tooling	Decision Maker	d.cr**@acceler*****.com	+1 (206) 55*-**	+1 (206) 55*-**	+1 (206) 55*-**	linkedin.com/in/d*en-cr******	Accelerate Cloud Engineering Corp	linkedin.com/company/accelerate-cloud-eng	Enterprise Cloud Systems & Developer Platforms	1201 3rd Ave	Ste 2200	Seattle	WA	98101	United States	LangSmith Automated Feedback Collection & User Thumbs Up/Down Analytics	High	✓ Verified 2026
AMAlistair MontgomeryLead AI Safety & Guardrails Engineer	Practitioner	a.mon**@edinburghf*******.uk	+44 (131) 55*-**	+44 (131) 55*-**	+44 (131) 55*-**	linkedin.com/in/a*air-mo*******	Edinburgh Quantitative Systems Ltd	linkedin.com/company/edinburgh-quant-sys	Automated Financial Advisory & Wealth Management	1 Lochside Ave	—	Edinburgh	Midlothian	EH12 9DJ	United Kingdom	LangSmith Enterprise SSO & RBAC Project Workspaces	Medium	✓ Verified 2026
KMKenichi MurataSenior Distributed AI Platform Engineer	Practitioner	k.mu**@kyotone*****.jp	+81 (75) 55*-**	+81 (75) 55*-**	+81 (75) 55*-**	linkedin.com/in/k*chi-m*******	Kyoto Neural Robotics Systems KK	linkedin.com/company/kyoto-neural-robotics	Robotics & Autonomous Machine Vision	Kyoto Research Park	Bldg 4	Kyoto	Kyoto Prefecture	600-8815	Japan	LangSmith Production RAG Retrieval Tracing & Log Inspection	High	✓ Verified 2026

Illustrative rows showing 20 of 60+ fields. Full records are unmasked.

We deliver 60+ data fields per record, including intent data. The sample shows a selection only. Tell us which fields you need, including any that aren't listed here, and we'll add them to your list.

Also available:Seniority & departmentJob functionTenure in roleEmployee countAnnual revenueSIC & NAICS codesParent companyWebsite & domainProduct editionContract & renewal timingIntent topics & scoreEmail verification date

How we prove an account runs Weights & Biases

No scraped résumés or stale directories. Three layers confirm a live installation before a contact reaches your list. Read our verification protocol

Pillar 1 · Telemetry

Live DNS & script signals

We inspect response headers, DNS MX and CNAME records and live JavaScript bundles to confirm a running Weights & Biases instance.

DNS · CNAME · MX recordsHTTP headers · JS bundles✓ Verified against live infrastructure

Pillar 2 · Operational intent

90-day hiring signals

We track job requisitions that ask for Weights & Biases skills, which shows ongoing budget and headcount.

Now hiringWeights & Biases Administrator

Now hiringWeights & Biases Architect

Now hiringWeights & Biases Engineer

Pillar 3 · Human & mailbox QA

Pre-delivery SMTP handshake

Each email is tested against the destination mail server, and titles are checked against current company rosters.

SMTP check ✓LinkedIn match ✓Title verified ✓

✓ Deliverable inbox and current role

Deliverability SLA

<3%

Maximum bounce rate, or we replace the contacts. Your sender reputation stays clean.

1:1 hard bounce replacement

Every email that hard-bounces within 30 days of delivery is replaced free, record for record.

24-hour pre-delivery ping

Live SMTP and MX checks right before we send your file.

Instant CRM import

Clean CSV or XLSX, ready for one-click import.

Ready for your outbound stack

Imports straight into the tools you use.

What are you trying to do?

Each campaign needs a different data strategy. Pick your goal to see how we build the audience.

Find companies on rival platforms and reach the people evaluating a move to, or away from, Weights & Biases.

Conquesting playbook

Pitch integrations, add-ons and complementary tools to companies already running Weights & Biases.

Ecosystem playbook

Build account lists around Weights & Biases deployment scale and engage the full committee across departments.

ABM playbook

Conquesting audienceSample

MLflow

Comet

Neptune.ai

→

Weights & Biases

Know the stack around every account

Weights & Biases rarely runs alone. Every record is tagged with the tools detected alongside it, so you can segment by complementary stacks.

PyTorch

Hugging Face

Kubernetes

AWS

CoreWeave

Slurm

Open the coexistence matrix

What Weights & Biases customers look like

Anonymised profiles of companies in our Weights & Biases dataset of 5,002+ accounts. Named accounts are shared in your free sample, never on a public page.

Weights & Biases account profiles · anonymised

Company size	Industry	Country	Employees	Revenue
Enterprise	Biotech AI	United Kingdom	10,000+	$5B+
Mid-market	Enterprise AI	United States	500–999	$100M–$250M
Mid-market	Foundation Model Labs	Canada	200–999	$50M–$250M
Enterprise	Autonomous Vehicles	Germany	5,000+	$1B+
Upper mid-market	Biotech AI	United States	1,000–4,999	$250M–$1B
SMB	Enterprise AI	Australia	50–199	$10M–$50M
Enterprise	Foundation Model Labs	United States	10,000+	$5B+
Mid-market	Autonomous Vehicles	United States	500–999	$100M–$250M

Markets we cover

United States

India

United Kingdom

Canada

Germany

Australia

Singapore

France

New Zealand

Netherlands

Plus 170 more countries. Ask for a country-by-country count of Weights & Biases accounts and we'll include it with your free sample.

Build the list your way

Every list is assembled from source to your product tier, job function, geography and revenue band. Nothing is a fixed export.

Editions & modules

Filter by what they actually run.

+W&B Models (Experiment Tracking)+W&B Weave (LLM Evaluation)+W&B Registry+W&B Sweeps+W&B Dedicated Cloud

Firmographics

Match revenue, size and industry.

+Industry+$1M–$10B+ revenue+Headcount+Ownership & funding+HQ & branches

Geography

Target any territory.

+US & Canada+US states+UK, DACH, Nordics+APAC & ANZ+Metro clusters

Need multi-attribute segments? Open the Audience Builder

What Weights & Biases teams are struggling with

Know the friction before you reach out, and position your product where it matters.

Friction 1

Tracking large training runs

ImpactExpensive runs need visibility.

OpportunityOffer training ops services.

Friction 2

LLM evaluation

ImpactTeams need repeatable evals.

OpportunityPitch evaluation services.

Friction 3

Change after CoreWeave acquisition

ImpactCustomers review pricing and hosting.

OpportunityTarget with MLOps alternatives.

Intent triggers we track

✓Training run scale-up

✓LLM product launch

✓MLOps tool review

✓Research team growth

“When you talk to companies who already use Snowflake and AWS about a native integration, the conversion rate skyrockets. Data InfoMetrix gave us the exact user list we needed.”

Director of Growth, a data integration companyName withheld at the client's request

Read the 6.8% Response case study

Weights & Biases list questions, answered

How many companies use Weights & Biases?

Data InfoMetrix tracks 5,002 companies using Weights & Biases, with 22,547 verified contacts at those accounts as of October 2026. The largest groups are Foundation Model Labs, Autonomous Vehicles and Biotech AI. Counts are estimates from our database and market research, so ask us for a live count for your exact criteria.

Who buys and manages Weights & Biases inside a company?

Weights & Biases is usually owned by ML Experimentation & LLM Development. Decision-makers include VP of AI / ML, CTO and Head of Data Science; ML Platform Lead and Staff ML Engineer shape the choice, and ML Engineers and Data Scientists use it day to day. Our Weights & Biases list can include any of these roles.

Which Weights & Biases products or editions can I target?

You can target accounts by the Weights & Biases products they run, including W&B Models (Experiment Tracking), W&B Weave (LLM Evaluation), W&B Registry, W&B Sweeps and W&B Dedicated Cloud. Tell us which edition or module matters and we filter the list to those accounts.

What other software do Weights & Biases customers use?

Weights & Biases customers commonly also run PyTorch, Hugging Face, Kubernetes, AWS and CoreWeave. We can filter any list by this kind of stack overlap.

What are the main alternatives to Weights & Biases?

The main alternatives to Weights & Biases are MLflow, Comet and Neptune.ai. We also keep verified user lists for MLflow, which is useful for competitive displacement campaigns.

When are Weights & Biases customers most likely to buy?

Buying triggers we track for Weights & Biases accounts include training run scale-up, LLM product launch, MLOps tool review and research team growth. A common pain point is tracking large training runs: expensive runs need visibility.

Can Data InfoMetrix deliver a free sample Weights & Biases contact list before ordering?

Yes. Data InfoMetrix delivers a complimentary 10-record sample tailored to your target Weights & Biases criteria—including target job titles, company size, and region—delivered within one business day with no obligation.

How does Data InfoMetrix guarantee email deliverability for Weights & Biases contacts?

Data InfoMetrix provides a 99% email deliverability guarantee on all Weights & Biases datasets. Every contact record undergoes real-time email verification within a 30 to 45-day refresh cycle, backed by a 1:1 hard bounce replacement policy for 30 days after delivery.

Sourcing and compliance. Business contacts come from public company sources, professional directories and opt-in publishing partners, then go through SMTP verification and human review. Lists are for B2B outreach: include an unsubscribe link and honour opt-outs (CAN-SPAM), and have a lawful basis such as legitimate interest when you email people in the EU or UK (GDPR). Read how we source and verify data