Top Machine Learning Development Services in Europe

WeAreBrain vs Reaktor: full comparison for 2026

Last updated: July 2026

Quick verdict

WeAreBrain (4.3/5) edges ahead of Reaktor (3.8/5) overall. WeAreBrain is the better choice for startups and scale-ups wanting AI-native product development combined with broader software modernization, not just an isolated ML model.. Reaktor is the stronger option for enterprises wanting AI capability embedded within a broader human-centred digital product and design consultancy, rather than a standalone ML vendor.. The right choice depends on your project size, budget, and required tech stack.

WeAreBrain vs Reaktor: head-to-head summary

Criterion WeAreBrain Reaktor
Founded 2015 2000
HQ Netherlands (internationally distributed team) Helsinki, Finland
Team size 60+ 700
Rating 4.3 / 5 3.8 / 5
Best for Startups and scale-ups wanting AI-native product development combined with broader software modernization, not just an isolated ML model. Enterprises wanting AI capability embedded within a broader human-centred digital product and design consultancy, rather than a standalone ML vendor.
Pricing model Dedicated team, fixed project Dedicated team, project-based consulting
Min. engagement Not published Not published (large enterprise engagements)
Primary tech stack Python, AI product tooling, Shopify/SAP Commerce Cloud integrations Python, AI/data-driven product tooling, Cloud platforms
Industries served Transport & Logistics, Healthcare, EdTech, Retail/E-commerce Cross-industry digital product development

WeAreBrain vs Reaktor: overview

WeAreBrain

WeAreBrain is a Netherlands-headquartered AI-native product studio founded in 2015, combining AI product development with software modernization, e-commerce integrations, and automation services. It describes itself as 'a winning team, not an agency,' with a 60+ person, 13-nationality team and an average client tenure of 3.8 years, alongside an NPS score above 80 (per company website). Named clients include SidelineSwap and clevergig, which was acquired by Visma.

Reaktor

Reaktor is a Helsinki, Finland digital consultancy founded in 2000, with 700 employees across nine offices including Helsinki, New York, Amsterdam, Stockholm, and Tokyo. It co-created 'Elements of AI,' a free AI-literacy MOOC with the University of Helsinki taken by over half a million people worldwide, and integrates AI and data-driven technology across a broader human-centred design and engineering practice rather than positioning itself as a standalone ML vendor.

Services and capabilities: WeAreBrain vs Reaktor

Capability WeAreBrain Reaktor
ML Development
AI Consulting
Computer Vision
NLP
Generative AI
MLOps
Data Engineering
Staff Augmentation

Tech stack comparison: WeAreBrain vs Reaktor

Framework / platform WeAreBrain Reaktor
Python
AWS N/A N/A
Microsoft Azure N/A N/A
Google Cloud N/A N/A
Kubernetes N/A N/A
PyTorch N/A N/A
LangChain N/A N/A
Databricks N/A N/A

Pricing comparison: WeAreBrain vs Reaktor

Criterion WeAreBrain Reaktor
Minimum engagement Not published Not published (large enterprise engagements)
Engagement models Dedicated team, Fixed project Dedicated team, Project-based consulting
Rate transparency Not public Not public
Price tier Enterprise / mid-market Enterprise / mid-market

Target audience comparison: WeAreBrain vs Reaktor

Dimension WeAreBrain Reaktor
Best company size Startup to mid-market Mid-market to enterprise
Best industries Transport & Logistics, Healthcare, EdTech Cross-industry digital product development
Best use cases AI-native product MVP development, E-commerce AI personalization Human-centred AI product design and development, Enterprise AI literacy training programs
Typical project type Dedicated team Dedicated team

WeAreBrain vs Reaktor: pros and cons

WeAreBrain
+ 80+ NPS and 3.8-year average client tenure signal strong retention (per company website)
+ 13-nationality team supports multilingual, multi-market European delivery
+ Combines AI-native product development with broader software modernization services
+ Founded 2015 with a decade of continuous operation
- Broader software, e-commerce, and automation service lines mean ML is one of several offerings, not the sole focus
- 60+ team size is modest relative to enterprise-scale competitors on this list
- Notable named clients (SidelineSwap, clevergig) are smaller-profile than some competitors' enterprise logos
Reaktor
+ 700 employees across nine global offices (Helsinki, New York, Amsterdam, Stockholm, Tokyo, and more) give major delivery scale
+ 'Elements of AI' MOOC, with 500,000+ participants, is a uniquely large-scale public AI-education contribution
+ Human-centred design integrated directly with AI and data engineering, useful for consumer-facing AI products
+ Founded 2000 — a quarter-century of continuous Helsinki-based operation
- AI/ML is one capability within a much broader design-and-engineering digital consultancy, not the firm's primary specialization
- 700-person, nine-office scale trades boutique-level AI focus for broad digital-consultancy breadth
- Public case studies emphasize design and product outcomes more than specific ML model performance metrics

Who should choose WeAreBrain?

WeAreBrain is the right choice for startups and scale-ups wanting AI-native product development combined with broader software modernization, not just an isolated ML model..

Frames itself around culture and retention — 'a winning team, not an agency' — with a long average client tenure as central to its pitch alongside technical delivery.. Minimum engagement starts at Not published. Works best with clients in Transport & Logistics, Healthcare, EdTech, Retail/E-commerce.

Who should choose Reaktor?

Reaktor is the right choice for enterprises wanting AI capability embedded within a broader human-centred digital product and design consultancy, rather than a standalone ML vendor..

Co-created 'Elements of AI,' a free AI literacy MOOC with the University of Helsinki taken by over half a million people worldwide — a public-education contribution unmatched by any other company on this list.. Minimum engagement starts at Not published (large enterprise engagements). Works best with clients in Cross-industry digital product development.

Decision matrix: WeAreBrain vs Reaktor

Your situation Recommended choice
You need full-ownership delivery on a defined project scope WeAreBrain
You need a large dedicated team for an ongoing programme WeAreBrain
Your budget is at the lower end Compare: WeAreBrain (Not published) vs Reaktor (Not published (large enterprise engagements))
You need specialist depth in a specific vertical WeAreBrain
You need staff augmentation or team extension Neither; consider alternatives that offer staff aug
You need consulting before committing to a build WeAreBrain

Use case fit: WeAreBrain vs Reaktor

Use case WeAreBrain fit Reaktor fit Winner
AI-native product MVP development Strong Limited WeAreBrain
E-commerce AI personalization Strong Limited WeAreBrain
Human-centred AI product design and development Limited Strong Reaktor
Enterprise AI literacy training programs Limited Strong Reaktor
Fixed-price build Limited Limited Both equally
Staff augmentation Limited Limited Both equally

Verdict: WeAreBrain vs Reaktor

WeAreBrain (4.3/5) is the stronger overall choice for most Machine Learning Development projects. Frames itself around culture and retention — 'a winning team, not an agency' — with a long average client tenure as central to its pitch alongside technical delivery.. It is best for startups and scale-ups wanting AI-native product development combined with broader software modernization, not just an isolated ML model..

Reaktor (3.8/5) is the better choice when enterprises wanting AI capability embedded within a broader human-centred digital product and design consultancy, rather than a standalone ML vendor.. If your situation matches those criteria, Reaktor is a competitive option.

Related comparisons

WeAreBrain vs Reaktor FAQ

Is WeAreBrain better than Reaktor?

WeAreBrain (4.3/5) scores higher overall, but "better" depends on your use case. WeAreBrain is better for startups and scale-ups wanting AI-native product development combined with broader software modernization, not just an isolated ML model.. Reaktor is better for enterprises wanting AI capability embedded within a broader human-centred digital product and design consultancy, rather than a standalone ML vendor..

How do WeAreBrain and Reaktor differ in pricing?

WeAreBrain uses dedicated team, fixed project pricing with a minimum engagement of Not published. Reaktor uses dedicated team, project-based consulting pricing with a minimum engagement of Not published (large enterprise engagements). Neither firm publishes a full rate card; a discovery call is required for project-specific quotes.

Which is better for enterprise: WeAreBrain or Reaktor?

Reaktor is the larger team and typically the better enterprise-scale choice. For very large programmes, verify team size and compliance coverage directly with each company before shortlisting.

What are the main differences between WeAreBrain and Reaktor?

WeAreBrain's primary differentiator is: frames itself around culture and retention — 'a winning team, not an agency' — with a long average client tenure as central to its pitch alongside technical delivery.. Reaktor's primary differentiator is: co-created 'elements of ai,' a free ai literacy mooc with the university of helsinki taken by over half a million people worldwide — a public-education contribution unmatched by any other company on this list.. They also differ in team size (60+ vs 700), minimum engagement (Not published vs Not published (large enterprise engagements)), and primary industries served (Transport & Logistics, Healthcare vs Cross-industry digital product development).

Last reviewed: July 2026. Verify all details directly with each company before making a decision.