Best AI Agent Development Companies in Europe

Vstorm vs Xomnia: full comparison for 2026

Last updated: August 2026

Quick verdict

Vstorm (4.6/5) edges ahead of Xomnia (4.3/5) 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.. Xomnia is the stronger option for northwest European enterprises wanting a data-and-AI consultancy with a recent acquisition-driven scale-up in specialist headcount.. The right choice depends on your project size, budget, and required tech stack.

Vstorm vs Xomnia: head-to-head summary

Criterion Vstorm Xomnia
Founded 2017 2013
HQ Wrocław, Poland Amsterdam, Netherlands
Team size 11–50 51–200
Rating 4.6 / 5 4.3 / 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. Northwest European enterprises wanting a data-and-AI consultancy with a recent acquisition-driven scale-up in specialist headcount.
Pricing model Fixed project, dedicated team Fixed project, dedicated team
Min. engagement Not published Not published
Primary tech stack Python, LangChain, LangGraph Python, LangChain, AWS
Industries served Technology & SaaS, Financial Services, Retail & E-commerce Manufacturing, Financial Services, Government & Public Sector, Technology & SaaS

Vstorm vs Xomnia: 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.

Xomnia

Xomnia is a data and AI consultancy founded in 2013 and headquartered in Amsterdam, the Netherlands, with roughly 85 employees before its June 2025 acquisition of Aurai (a 50-person data and AI team founded by Lars Kieftenburg), bringing its combined headcount to 135+ specialists. It serves manufacturing, finance, telecommunications, energy, and government clients across Northwest Europe, positioning itself explicitly as the region's leading data and AI consultancy. As a Dutch company, all client engagements sit fully within EU jurisdiction and GDPR by default.

Services and capabilities: Vstorm vs Xomnia

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

Tech stack comparison: Vstorm vs Xomnia

Framework / platform Vstorm Xomnia
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 N/A

Pricing comparison: Vstorm vs Xomnia

Criterion Vstorm Xomnia
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 Xomnia

Dimension Vstorm Xomnia
Best company size Startup to mid-market Startup to mid-market
Best industries Technology & SaaS, Financial Services, Retail & E-commerce Manufacturing, Financial Services, Government & Public Sector
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 Government or energy-sector clients needing a Northwest-Europe-based AI consultancy, Manufacturing or telecom enterprises wanting data pipeline work bundled with agentic AI
Typical project type Fixed project Fixed project

Vstorm vs Xomnia: 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
Xomnia
+ Fully EU-domiciled (Netherlands), with all engagements sitting inside GDPR jurisdiction by default
+ 135+ specialists post-acquisition gives it meaningful bench depth for a boutique-scale firm
+ Named delivery experience across manufacturing, finance, telecom, energy, and government
+ Over a decade of data and AI consultancy history since 2013
- Recent acquisition (2025) means combined-team integration is still relatively new
- Minimum engagement figures are not published, requiring direct sales contact for early budgeting
- Agentic AI is one part of a broader data-and-AI consultancy practice, not the sole focus

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 Xomnia?

Xomnia is the right choice for northwest European enterprises wanting a data-and-AI consultancy with a recent acquisition-driven scale-up in specialist headcount..

A 2025 acquisition (Aurai) grew its specialist headcount to 135+, positioning it as Northwest Europe's leading data and AI consultancy.. Minimum engagement starts at Not published. Works best with clients in Manufacturing, Financial Services, Government & Public Sector, Technology & SaaS.

Decision matrix: Vstorm vs Xomnia

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 Xomnia (Not published)
You need specialist depth in a specific vertical Xomnia
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 Xomnia

Use case Vstorm fit Xomnia 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
Government or energy-sector clients needing a Northwest-Europe-based AI consultancy Limited Strong Xomnia
Manufacturing or telecom enterprises wanting data pipeline work bundled with agentic AI Limited Strong Xomnia
Fixed-price build Limited Limited Both equally
Staff augmentation Limited Limited Both equally

Verdict: Vstorm vs Xomnia

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..

Xomnia (4.3/5) is the better choice when northwest European enterprises wanting a data-and-AI consultancy with a recent acquisition-driven scale-up in specialist headcount.. If your situation matches those criteria, Xomnia is a competitive option.

Related comparisons

Vstorm vs Xomnia FAQ

Is Vstorm better than Xomnia?

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.. Xomnia is better for northwest European enterprises wanting a data-and-AI consultancy with a recent acquisition-driven scale-up in specialist headcount..

How do Vstorm and Xomnia differ in pricing?

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

Xomnia 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 Xomnia?

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.. Xomnia's primary differentiator is: a 2025 acquisition (aurai) grew its specialist headcount to 135+, positioning it as northwest europe's leading data and ai consultancy.. 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.