Top Machine Learning Development Services in Europe

element61 vs STX Next: full comparison for 2026

Last updated: July 2026

Quick verdict

element61 (4.1/5) edges ahead of STX Next (4.0/5) overall. element61 is the better choice for belgian and Benelux enterprises wanting a long-established analytics and performance-management consultancy that has built out a dedicated data science and AI practice.. STX Next is the stronger option for enterprises wanting Python-native ML and AI engineering from a vendor with two decades of Python specialization and certified partnerships across all three major clouds.. The right choice depends on your project size, budget, and required tech stack.

element61 vs STX Next: head-to-head summary

Criterion element61 STX Next
Founded 2007 2005
HQ Brussels, Belgium Poznań, Poland
Team size ~145 consultants (98.7 FTE per latest filings) 330
Rating 4.1 / 5 4.0 / 5
Best for Belgian and Benelux enterprises wanting a long-established analytics and performance-management consultancy that has built out a dedicated data science and AI practice. Enterprises wanting Python-native ML and AI engineering from a vendor with two decades of Python specialization and certified partnerships across all three major clouds.
Pricing model Consulting retainer, project-based Fixed project, dedicated team, staff augmentation
Min. engagement Not published Not published
Primary tech stack Python, BI/analytics platforms, Microsoft Azure Python, AWS, Snowflake
Industries served Cross-industry Benelux enterprise Financial Services, Manufacturing, Energy & Utilities, Healthcare, Retail/E-commerce

element61 vs STX Next: overview

element61

element61 is a Brussels, Belgium analytics, performance management, and AI consultancy founded in 2007, with 145+ consultants averaging 9 years of experience each (98.7 FTE per latest financial filings). It layered data science and AI onto an already-mature BI and performance-management practice, and became the first Belgian partner for Microsoft's 'Analytics on Azure' Advanced Specialization. It primarily serves Belgian and Benelux enterprise clients.

STX Next

STX Next is a Poznań, Poland software company founded in 2005, describing itself as the largest Python-focused software development company in Europe with 330 employees operating a fully remote model across the US, UK, DACH region, and Poland. It holds simultaneous AWS Advanced Tier, Snowflake, Databricks, Microsoft Azure, and Amazon Bedrock partnerships, and built and open-sourced DeepNext, an autonomous AI developer agent, serving financial services, private equity, manufacturing, oil & gas, and healthcare clients.

Services and capabilities: element61 vs STX Next

Capability element61 STX Next
ML Development
AI Consulting
Computer Vision
NLP
Generative AI
MLOps
Data Engineering
Staff Augmentation

Tech stack comparison: element61 vs STX Next

Framework / platform element61 STX Next
Python
AWS N/A
Microsoft Azure
Google Cloud N/A N/A
Kubernetes N/A N/A
PyTorch N/A N/A
LangChain N/A N/A
Databricks N/A

Pricing comparison: element61 vs STX Next

Criterion element61 STX Next
Minimum engagement Not published Not published
Engagement models Consulting retainer, Fixed project Fixed project, Dedicated team, Staff augmentation
Rate transparency Not public Not public
Price tier Enterprise / mid-market Enterprise / mid-market

Target audience comparison: element61 vs STX Next

Dimension element61 STX Next
Best company size Startup to mid-market Mid-market to enterprise
Best industries Cross-industry Benelux enterprise Financial Services, Manufacturing, Energy & Utilities
Best use cases Combined BI and AI enterprise programs, Azure-based analytics and ML platform builds Python-native ML pipeline development, Multi-cloud MLOps using Databricks, Snowflake, and Bedrock
Typical project type Consulting retainer Fixed project

element61 vs STX Next: pros and cons

element61
+ Founded 2007 — one of the longest-running firms on this list, with over 15 years of continuous operation
+ 145+ consultants averaging 9 years of analytics and AI experience each (per company website)
+ First Belgian partner for Microsoft's 'Analytics on Azure' Advanced Specialization
+ Combined BI, data science, and AI practice under one roof simplifies vendor management for Benelux buyers
- Originated as a BI and performance-management consultancy, so AI/ML is a newer practice layered onto an older core business rather than the founding focus
- Belgium-centric market presence may mean less experience outside Benelux client norms
- Pricing and minimum engagement are not published
STX Next
+ Largest Python-focused software company in Europe (per company website), giving deep bench strength for Python-native ML engineering
+ Certified across AWS Advanced Tier, Snowflake, Databricks, Azure, and Amazon Bedrock simultaneously — an unusually broad multi-cloud partner portfolio
+ Open-sourced its own autonomous AI dev agent (DeepNext), demonstrating in-house AI R&D beyond client work
+ 330 employees and a fully remote model across the US, UK, DACH, and Poland gives wide delivery flexibility
- AI and ML is one part of a much broader Python software-development practice, not the company's sole specialization
- 330-person scale means less boutique-style founder involvement than smaller specialists on this list
- Broad industry spread from banking to oil & gas trades vertical depth for breadth

Who should choose element61?

element61 is the right choice for belgian and Benelux enterprises wanting a long-established analytics and performance-management consultancy that has built out a dedicated data science and AI practice..

Started as an analytics and performance-management consultancy in 2007 and layered data science and AI on top of an already-mature BI practice, combining both under one roof.. Minimum engagement starts at Not published. Works best with clients in Cross-industry Benelux enterprise.

Who should choose STX Next?

STX Next is the right choice for enterprises wanting Python-native ML and AI engineering from a vendor with two decades of Python specialization and certified partnerships across all three major clouds..

Built and open-sourced DeepNext, an autonomous AI developer agent, and holds AWS Advanced Tier, Snowflake, Databricks, Azure, and Amazon Bedrock partnerships simultaneously.. Minimum engagement starts at Not published. Works best with clients in Financial Services, Manufacturing, Energy & Utilities, Healthcare, Retail/E-commerce.

Decision matrix: element61 vs STX Next

Your situation Recommended choice
You need full-ownership delivery on a defined project scope element61
You need a large dedicated team for an ongoing programme STX Next
Your budget is at the lower end Compare: element61 (Not published) vs STX Next (Not published)
You need specialist depth in a specific vertical STX Next
You need staff augmentation or team extension STX Next
You need consulting before committing to a build element61

Use case fit: element61 vs STX Next

Use case element61 fit STX Next fit Winner
Combined BI and AI enterprise programs Strong Limited element61
Azure-based analytics and ML platform builds Strong Limited element61
Python-native ML pipeline development Limited Strong STX Next
Multi-cloud MLOps using Databricks, Snowflake, and Bedrock Limited Strong STX Next
Fixed-price build Limited Limited Both equally
Staff augmentation Limited Limited Both equally

Verdict: element61 vs STX Next

element61 (4.1/5) is the stronger overall choice for most Machine Learning Development projects. Started as an analytics and performance-management consultancy in 2007 and layered data science and AI on top of an already-mature BI practice, combining both under one roof.. It is best for belgian and Benelux enterprises wanting a long-established analytics and performance-management consultancy that has built out a dedicated data science and AI practice..

STX Next (4.0/5) is the better choice when enterprises wanting Python-native ML and AI engineering from a vendor with two decades of Python specialization and certified partnerships across all three major clouds.. If your situation matches those criteria, STX Next is a competitive option.

Related comparisons

element61 vs STX Next FAQ

Is element61 better than STX Next?

element61 (4.1/5) scores higher overall, but "better" depends on your use case. element61 is better for belgian and Benelux enterprises wanting a long-established analytics and performance-management consultancy that has built out a dedicated data science and AI practice.. STX Next is better for enterprises wanting Python-native ML and AI engineering from a vendor with two decades of Python specialization and certified partnerships across all three major clouds..

How do element61 and STX Next differ in pricing?

element61 uses consulting retainer, project-based pricing with a minimum engagement of Not published. STX Next uses fixed project, dedicated team, staff augmentation pricing with a minimum engagement of Not published. Neither firm publishes a full rate card; a discovery call is required for project-specific quotes.

Which is better for enterprise: element61 or STX Next?

element61 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 element61 and STX Next?

element61's primary differentiator is: started as an analytics and performance-management consultancy in 2007 and layered data science and ai on top of an already-mature bi practice, combining both under one roof.. STX Next's primary differentiator is: built and open-sourced deepnext, an autonomous ai developer agent, and holds aws advanced tier, snowflake, databricks, azure, and amazon bedrock partnerships simultaneously.. They also differ in team size (~145 consultants (98.7 FTE per latest filings) vs 330), minimum engagement (Not published vs Not published), and primary industries served (Cross-industry Benelux enterprise vs Financial Services, Manufacturing).

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