Best AI Agent Development Companies in Europe

Deviniti vs B12 Consulting: full comparison for 2026

Last updated: August 2026

Quick verdict

Deviniti (3.9/5) edges ahead of B12 Consulting (3.6/5) overall. Deviniti is the better choice for eU buyers on the Atlassian ecosystem wanting a vendor with an independently checkable marketplace/partner track record.. B12 Consulting is the stronger option for eU buyers wanting a small, deeply technical Belgian consultancy founded by physics researchers.. The right choice depends on your project size, budget, and required tech stack.

Deviniti vs B12 Consulting: head-to-head summary

Criterion Deviniti B12 Consulting
Founded 2004 2012
HQ Wrocław, Poland Louvain-la-Neuve, Belgium
Team size 201–500 11–50
Rating 3.9 / 5 3.6 / 5
Best for EU buyers on the Atlassian ecosystem wanting a vendor with an independently checkable marketplace/partner track record. EU buyers wanting a small, deeply technical Belgian consultancy founded by physics researchers.
Pricing model Fixed project, dedicated team Fixed project, staff augmentation
Min. engagement $20K (per company website; independently unverifiable) Not published
Primary tech stack Python, Java, LangChain Python, LangChain, AWS
Industries served Financial Services, Manufacturing, Technology & SaaS, Retail & E-commerce Manufacturing, Technology & SaaS

Deviniti vs B12 Consulting: overview

Deviniti

Deviniti is a Wrocław, Poland-based software company founded in 2004 by Piotr Dorosz and Jacek Machata, with roughly 260 employees across Europe and North America. Its established Atlassian Marketplace app and consulting business gives European procurement teams a checkable, independently reviewable track record beyond the vendor's self-reported claims. As a Polish company, it sits fully within EU jurisdiction, and its financial-sector origins mean it has existing compliance-aware delivery experience relevant to GDPR-sensitive agentic AI work.

B12 Consulting

B12 Consulting was founded in 2012 by a group of PhDs in Physics sharing a passion for complex problem solving, headquartered in Louvain-la-Neuve, Belgium with an additional Brussels presence, and roughly 35 FTE. It is a services company expert in artificial intelligence, data science, and custom software development, with a technical, research-adjacent culture reflecting its founders' academic backgrounds. As a Belgian EU entity, it offers full EU data residency at a compact, deeply technical headcount.

Services and capabilities: Deviniti vs B12 Consulting

Capability Deviniti B12 Consulting
Multi-agent orchestration
RAG / knowledge integration
Workflow & systems integration
Coding agents
Monitoring & anomaly detection
Customer-facing agents

Tech stack comparison: Deviniti vs B12 Consulting

Framework / platform Deviniti B12 Consulting
LangChain
LangGraph N/A N/A
AutoGen N/A N/A
LlamaIndex N/A N/A
OpenAI N/A N/A
Anthropic Claude N/A N/A
Pinecone N/A N/A
AWS
Azure N/A
Kubernetes N/A N/A

Pricing comparison: Deviniti vs B12 Consulting

Criterion Deviniti B12 Consulting
Minimum engagement $20K (per company website; independently unverifiable) Not published
Engagement models Fixed project, Dedicated team Fixed project, Staff augmentation
Rate transparency Minimum disclosed Minimum disclosed
Price tier Accessible Mid-market

Target audience comparison: Deviniti vs B12 Consulting

Dimension Deviniti B12 Consulting
Best company size Startup to mid-market Startup to mid-market
Best industries Financial Services, Manufacturing, Technology & SaaS Manufacturing, Technology & SaaS
Best use cases EU buyers wanting a vendor whose track record can be independently checked via a third-party marketplace, Workflow-integration agents for teams already running Atlassian tooling under an existing contract EU buyers wanting a small, technically rigorous Belgian consultancy for a well-scoped project, Complex data-science-adjacent agentic AI problems suited to a research-oriented team
Typical project type Fixed project Fixed project

Deviniti vs B12 Consulting: pros and cons

Deviniti
+ Atlassian Marketplace and partner listings give procurement an independently checkable track record
+ Fully EU-domiciled (Poland), avoiding cross-border data-transfer complexity
+ Two decades of enterprise systems-integration experience, originally rooted in financial-sector IT
+ Founder-led continuity since 2004 provides institutional stability
- Agentic AI is a newer addition to a legacy enterprise-software and Atlassian practice
- Less name recognition in AI-specific European procurement circles compared to AI-first competitors
- Public agentic-specific case studies are limited relative to its Atlassian portfolio
B12 Consulting
+ Fully EU-domiciled (Belgium), simplifying GDPR compliance for European buyers
+ Founded by PhDs in Physics, giving it an unusually research-adjacent technical culture
+ Over a decade of continuous operating history since 2012
+ Brussels presence alongside Louvain-la-Neuve headquarters gives access to EU institutional buyers
- Very small team (~35 FTE) caps capacity for large or highly parallel programs
- Minimum engagement figures are not published, requiring direct sales contact for early budgeting
- Fewer named large-enterprise case studies than other boutiques on this list

Who should choose Deviniti?

Deviniti is the right choice for eU buyers on the Atlassian ecosystem wanting a vendor with an independently checkable marketplace/partner track record..

An Atlassian Marketplace and partner track record independently checkable outside the vendor's own claims, fully EU-domiciled (Poland).. Minimum engagement starts at $20K (per company website; independently unverifiable). Works best with clients in Financial Services, Manufacturing, Technology & SaaS, Retail & E-commerce.

Who should choose B12 Consulting?

B12 Consulting is the right choice for eU buyers wanting a small, deeply technical Belgian consultancy founded by physics researchers..

Founded by PhDs in Physics, giving it a research-adjacent, deeply technical culture uncommon among the boutiques on this list.. Minimum engagement starts at Not published. Works best with clients in Manufacturing, Technology & SaaS.

Decision matrix: Deviniti vs B12 Consulting

Your situation Recommended choice
You need full-ownership delivery on a defined project scope Deviniti
You need a large dedicated team for an ongoing programme Deviniti
Your budget is at the lower end Compare: Deviniti ($20K (per company website; independently unverifiable)) vs B12 Consulting (Not published)
You need specialist depth in a specific vertical Deviniti
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: Deviniti vs B12 Consulting

Use case Deviniti fit B12 Consulting fit Winner
EU buyers wanting a vendor whose track record can be independently checked via a third-party marketplace Strong Strong Both equally
Workflow-integration agents for teams already running Atlassian tooling under an existing contract Strong Limited Deviniti
EU buyers wanting a small, technically rigorous Belgian consultancy for a well-scoped project Strong Strong Both equally
Complex data-science-adjacent agentic AI problems suited to a research-oriented team Limited Strong B12 Consulting
Fixed-price build Limited Limited Both equally
Staff augmentation Limited Limited Both equally

Verdict: Deviniti vs B12 Consulting

Deviniti (3.9/5) is the stronger overall choice for most AI Agent Development projects. An Atlassian Marketplace and partner track record independently checkable outside the vendor's own claims, fully EU-domiciled (Poland).. It is best for eU buyers on the Atlassian ecosystem wanting a vendor with an independently checkable marketplace/partner track record..

B12 Consulting (3.6/5) is the better choice when eU buyers wanting a small, deeply technical Belgian consultancy founded by physics researchers.. If your situation matches those criteria, B12 Consulting is a competitive option.

Related comparisons

Deviniti vs B12 Consulting FAQ

Is Deviniti better than B12 Consulting?

Deviniti (3.9/5) scores higher overall, but "better" depends on your use case. Deviniti is better for eU buyers on the Atlassian ecosystem wanting a vendor with an independently checkable marketplace/partner track record.. B12 Consulting is better for eU buyers wanting a small, deeply technical Belgian consultancy founded by physics researchers..

How do Deviniti and B12 Consulting differ in pricing?

Deviniti uses fixed project, dedicated team pricing with a minimum engagement of $20K (per company website; independently unverifiable). B12 Consulting uses fixed project, 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: Deviniti or B12 Consulting?

Deviniti 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 Deviniti and B12 Consulting?

Deviniti's primary differentiator is: an atlassian marketplace and partner track record independently checkable outside the vendor's own claims, fully eu-domiciled (poland).. B12 Consulting's primary differentiator is: founded by phds in physics, giving it a research-adjacent, deeply technical culture uncommon among the boutiques on this list.. They also differ in team size (201–500 vs 11–50), minimum engagement ($20K (per company website; independently unverifiable) vs Not published), and primary industries served (Financial Services, Manufacturing vs Manufacturing, Technology & SaaS).

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