Best AI Agent Development Companies in Europe

Endava vs B12 Consulting: full comparison for 2026

Last updated: August 2026

Quick verdict

Endava (4.0/5) edges ahead of B12 Consulting (3.6/5) overall. Endava is the better choice for uK and European enterprises wanting a vendor that has publicly documented using agentic AI on its own internal delivery methodology.. 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.

Endava vs B12 Consulting: head-to-head summary

Criterion Endava B12 Consulting
Founded 2000 2012
HQ London, UK Louvain-la-Neuve, Belgium
Team size 10,000+ 11–50
Rating 4.0 / 5 3.6 / 5
Best for UK and European enterprises wanting a vendor that has publicly documented using agentic AI on its own internal delivery methodology. EU buyers wanting a small, deeply technical Belgian consultancy founded by physics researchers.
Pricing model Dedicated team, retainer, time & materials Fixed project, staff augmentation
Min. engagement Not published Not published
Primary tech stack Python, OpenAI, LangChain Python, LangChain, AWS
Industries served Financial Services, Technology & SaaS, Retail & E-commerce, Healthcare Manufacturing, Technology & SaaS

Endava vs B12 Consulting: overview

Endava

Endava was founded in 2000 and is headquartered in London, UK, with over 10,000 employees across 26 locations. It has embedded OpenAI's AI agents directly into its own software delivery workflow, branded as DavaFlow, making it one of the few firms on this list that has publicly documented using agentic AI to redesign its own internal delivery process, not just sell it to clients. As a UK-headquartered, NYSE-listed company, it offers public financial disclosure but sits outside EU jurisdiction post-Brexit for its own corporate entity.

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: Endava vs B12 Consulting

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

Tech stack comparison: Endava vs B12 Consulting

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

Pricing comparison: Endava vs B12 Consulting

Criterion Endava B12 Consulting
Minimum engagement Not published Not published
Engagement models Dedicated team, Retainer, Time & materials Fixed project, Staff augmentation
Rate transparency Minimum disclosed Minimum disclosed
Price tier Mid-market Mid-market

Target audience comparison: Endava vs B12 Consulting

Dimension Endava B12 Consulting
Best company size Enterprise Startup to mid-market
Best industries Financial Services, Technology & SaaS, Retail & E-commerce Manufacturing, Technology & SaaS
Best use cases Buyers wanting proof a vendor applies agentic AI to its own delivery process before selling it externally, UK and European enterprises needing large-scale dedicated-team engagements 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 Dedicated team Fixed project

Endava vs B12 Consulting: pros and cons

Endava
+ Publicly documented use of OpenAI's agentic AI in its own internal delivery methodology (DavaFlow)
+ NYSE-listed with public financial disclosure
+ 10,000+ employees across 26 locations gives substantial bench depth
+ Quarter-century of digital consultancy history since 2000
- UK-headquartered, so post-Brexit it sits outside EU jurisdiction for its own corporate entity
- Minimum engagement figures are not published, requiring direct sales contact for early budgeting
- 26-location scale can mean less senior-architect access than boutique competitors
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 Endava?

Endava is the right choice for uK and European enterprises wanting a vendor that has publicly documented using agentic AI on its own internal delivery methodology..

A named, OpenAI-powered internal delivery methodology (DavaFlow) — evidence the firm applies agentic AI to its own software delivery, not just client work.. Minimum engagement starts at Not published. Works best with clients in Financial Services, Technology & SaaS, Retail & E-commerce, Healthcare.

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: Endava vs B12 Consulting

Your situation Recommended choice
You need full-ownership delivery on a defined project scope B12 Consulting
You need a large dedicated team for an ongoing programme Endava
Your budget is at the lower end Compare: Endava (Not published) vs B12 Consulting (Not published)
You need specialist depth in a specific vertical Endava
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: Endava vs B12 Consulting

Use case Endava fit B12 Consulting fit Winner
Buyers wanting proof a vendor applies agentic AI to its own delivery process before selling it externally Strong Strong Both equally
UK and European enterprises needing large-scale dedicated-team engagements Strong Limited Endava
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: Endava vs B12 Consulting

Endava (4.0/5) is the stronger overall choice for most AI Agent Development projects. A named, OpenAI-powered internal delivery methodology (DavaFlow) — evidence the firm applies agentic AI to its own software delivery, not just client work.. It is best for uK and European enterprises wanting a vendor that has publicly documented using agentic AI on its own internal delivery methodology..

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

Endava vs B12 Consulting FAQ

Is Endava better than B12 Consulting?

Endava (4.0/5) scores higher overall, but "better" depends on your use case. Endava is better for uK and European enterprises wanting a vendor that has publicly documented using agentic AI on its own internal delivery methodology.. B12 Consulting is better for eU buyers wanting a small, deeply technical Belgian consultancy founded by physics researchers..

How do Endava and B12 Consulting differ in pricing?

Endava uses dedicated team, retainer, time & materials pricing with a minimum engagement of Not published. 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: Endava or B12 Consulting?

Endava 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 Endava and B12 Consulting?

Endava's primary differentiator is: a named, openai-powered internal delivery methodology (davaflow) — evidence the firm applies agentic ai to its own software delivery, not just client work.. 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 (10,000+ vs 11–50), minimum engagement (Not published vs Not published), and primary industries served (Financial Services, Technology & SaaS vs Manufacturing, Technology & SaaS).

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