Best AI Agent Development Companies in Europe

Vstorm vs ML6: full comparison for 2026

Last updated: August 2026

Quick verdict

Vstorm (4.6/5) edges ahead of ML6 (4.4/5) overall. Vstorm is the better choice for eU mid-market buyers wanting a consultancy whose entire practice is agentic AI, with public EU AI Act commentary from its own founders.. ML6 is the stronger option for european buyers who specifically require every vendor office and delivery location to sit inside the EU with no exceptions.. The right choice depends on your project size, budget, and required tech stack.

Vstorm vs ML6: head-to-head summary

Criterion Vstorm ML6
Founded 2017 2013
HQ Wrocław, Poland Ghent, Belgium
Team size 11–50 51–200
Rating 4.6 / 5 4.4 / 5
Best for EU mid-market buyers wanting a consultancy whose entire practice is agentic AI, with public EU AI Act commentary from its own founders. European buyers who specifically require every vendor office and delivery location to sit inside the EU with no exceptions.
Pricing model Fixed project, dedicated team Fixed project, dedicated team
Min. engagement Not published Not published
Primary tech stack Python, LangChain, LangGraph Python, LangChain, GCP
Industries served Technology & SaaS, Financial Services, Retail & E-commerce Manufacturing, Financial Services, Retail & E-commerce, Technology & SaaS

Vstorm vs ML6: overview

Vstorm

Vstorm is a Wrocław, Poland-based boutique founded in October 2017 by CEO Antoni Kozelski and VP Bartosz Gonczarek, with a compact team of 11–50 people, operating fully within the EU as an agentic AI engineering consultancy. It was the first AI consultancy accepted into the Agentic AI Foundation (AAIF) and publishes its own TriStorm delivery framework, with a public commitment to AGENTS.md documentation on every project. As a Polish company, it falls squarely under GDPR without any cross-border transfer questions for EU clients, and its founders speak and publish regularly on EU AI Act readiness specifically.

ML6

ML6 is an AI engineering company founded in 2013 by Nicolas Deruytter and Michael Lemmer, headquartered in Ghent, Belgium, with roughly 178 employees across offices exclusively in Ghent, Amsterdam, Berlin, and Munich. Unlike most firms on this list, it operates with zero non-EU offices — every delivery location is inside the EU, which materially simplifies data-residency and cross-border transfer questions for European procurement teams. Its positioning as "Enterprise Superintelligence" reflects a broader AI engineering practice, of which agentic AI is one growing part.

Services and capabilities: Vstorm vs ML6

Capability Vstorm ML6
Multi-agent orchestration
RAG / knowledge integration
Workflow & systems integration
Coding agents
Monitoring & anomaly detection
Customer-facing agents

Tech stack comparison: Vstorm vs ML6

Framework / platform Vstorm ML6
LangChain
LangGraph N/A
AutoGen N/A N/A
LlamaIndex N/A N/A
OpenAI N/A
Anthropic Claude N/A
Pinecone N/A N/A
AWS
Azure N/A
Kubernetes N/A

Pricing comparison: Vstorm vs ML6

Criterion Vstorm ML6
Minimum engagement Not published Not published
Engagement models Fixed project, Dedicated team Fixed project, Dedicated team
Rate transparency Minimum disclosed Minimum disclosed
Price tier Mid-market Mid-market

Target audience comparison: Vstorm vs ML6

Dimension Vstorm ML6
Best company size Startup to mid-market Startup to mid-market
Best industries Technology & SaaS, Financial Services, Retail & E-commerce Manufacturing, Financial Services, Retail & E-commerce
Best use cases EU buyers wanting a vendor whose entire business is agentic AI, fully within EU jurisdiction, Teams wanting standardized AGENTS.md documentation baked into delivery for future maintainability Procurement processes with a hard requirement that every vendor office sits inside the EU, Multi-country EU enterprises wanting a choice of Belgian, Dutch, or German delivery hub
Typical project type Fixed project Fixed project

Vstorm vs ML6: pros and cons

Vstorm
+ First AI consultancy formally accepted into the Agentic AI Foundation, an independently verifiable credential
+ Fully EU-domiciled (Poland), avoiding cross-border transfer complexity for European clients
+ Named proprietary delivery framework (TriStorm) gives buyers a concrete methodology to evaluate
+ Founders publish specifically on EU AI Act readiness, not just generic AI commentary
- 11–50 person team caps capacity for large or highly parallel programs
- Founded relatively recently (October 2017) relative to some longer-tenured European competitors on this list
- Minimum engagement figures are not published, requiring direct sales contact for early budgeting
ML6
+ 100% EU office footprint across Belgium, Netherlands, and Germany, with zero non-EU locations
+ A decade-plus of AI engineering delivery history since 2013
+ Multi-country EU presence (Ghent, Amsterdam, Berlin, Munich) gives clients a choice of delivery hub
+ ~178-person team gives meaningful bench depth for a boutique-scale firm
- Agentic AI is one growing part of a broader AI engineering practice, not the sole focus
- Minimum engagement figures are not published, requiring direct sales contact for early budgeting
- No presence outside continental Europe limits options for clients needing non-EU delivery coverage

Who should choose Vstorm?

Vstorm is the right choice for eU mid-market buyers wanting a consultancy whose entire practice is agentic AI, with public EU AI Act commentary from its own founders..

First AI consultancy accepted into the Agentic AI Foundation, EU-domiciled, with founders who publish specifically on EU AI Act readiness.. Minimum engagement starts at Not published. Works best with clients in Technology & SaaS, Financial Services, Retail & E-commerce.

Who should choose ML6?

ML6 is the right choice for european buyers who specifically require every vendor office and delivery location to sit inside the EU with no exceptions..

A 100% EU office footprint (Ghent, Amsterdam, Berlin, Munich) with zero non-EU locations — the cleanest data-residency story among the boutiques on this list.. Minimum engagement starts at Not published. Works best with clients in Manufacturing, Financial Services, Retail & E-commerce, Technology & SaaS.

Decision matrix: Vstorm vs ML6

Your situation Recommended choice
You need full-ownership delivery on a defined project scope Vstorm
You need a large dedicated team for an ongoing programme Vstorm
Your budget is at the lower end Compare: Vstorm (Not published) vs ML6 (Not published)
You need specialist depth in a specific vertical ML6
You need staff augmentation or team extension Neither; consider alternatives that offer staff aug
You need consulting before committing to a build Both may offer discovery engagements

Use case fit: Vstorm vs ML6

Use case Vstorm fit ML6 fit Winner
EU buyers wanting a vendor whose entire business is agentic AI, fully within EU jurisdiction Strong Strong Both equally
Teams wanting standardized AGENTS.md documentation baked into delivery for future maintainability Strong Limited Vstorm
Procurement processes with a hard requirement that every vendor office sits inside the EU Limited Strong ML6
Multi-country EU enterprises wanting a choice of Belgian, Dutch, or German delivery hub Limited Strong ML6
Fixed-price build Limited Limited Both equally
Staff augmentation Limited Limited Both equally

Verdict: Vstorm vs ML6

Vstorm (4.6/5) is the stronger overall choice for most AI Agent Development projects. First AI consultancy accepted into the Agentic AI Foundation, EU-domiciled, with founders who publish specifically on EU AI Act readiness.. It is best for eU mid-market buyers wanting a consultancy whose entire practice is agentic AI, with public EU AI Act commentary from its own founders..

ML6 (4.4/5) is the better choice when european buyers who specifically require every vendor office and delivery location to sit inside the EU with no exceptions.. If your situation matches those criteria, ML6 is a competitive option.

Related comparisons

Vstorm vs ML6 FAQ

Is Vstorm better than ML6?

Vstorm (4.6/5) scores higher overall, but "better" depends on your use case. Vstorm is better for eU mid-market buyers wanting a consultancy whose entire practice is agentic AI, with public EU AI Act commentary from its own founders.. ML6 is better for european buyers who specifically require every vendor office and delivery location to sit inside the EU with no exceptions..

How do Vstorm and ML6 differ in pricing?

Vstorm uses fixed project, dedicated team pricing with a minimum engagement of Not published. ML6 uses fixed project, dedicated team 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: Vstorm or ML6?

ML6 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 Vstorm and ML6?

Vstorm's primary differentiator is: first ai consultancy accepted into the agentic ai foundation, eu-domiciled, with founders who publish specifically on eu ai act readiness.. ML6's primary differentiator is: a 100% eu office footprint (ghent, amsterdam, berlin, munich) with zero non-eu locations — the cleanest data-residency story among the boutiques on this list.. They also differ in team size (11–50 vs 51–200), minimum engagement (Not published vs Not published), and primary industries served (Technology & SaaS, Financial Services vs Manufacturing, Financial Services).

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