Best AI Staff Augmentation Companies

EPAM Systems vs Xenoss: full comparison for 2026

Quick verdict

EPAM Systems (4.6/5) edges ahead of Xenoss (3.8/5) overall. EPAM Systems is the better choice for large enterprises, regulated industries, multi-team AI programs. Xenoss is the stronger option for AdTech and MarTech firms needing real-time data plus AI. The right choice depends on your project size, budget, and required tech stack.

EPAM Systems vs Xenoss: head-to-head summary

Criterion EPAM Systems Xenoss
Founded 1993 2013
HQ Newtown, Pennsylvania, USA New York, New York, USA
Team size 61,000+ 100–200
Rating 4.6 / 5 3.8 / 5
Primary differentiator Thousands of certified GenAI engineers inside a publicly listed firm with enterprise security and procurement processes Real-time, high-load data engineering from AdTech roots
Pricing model Time and materials for augmented engineers; dedicated team and managed program contracts; rates on request Team extension and project pricing; rates on request
Min. engagement Not published Not published
Primary tech stack Python, PyTorch, TensorFlow Python, Kafka, Spark
Industries served Financial services, Healthcare & life sciences, Retail & e-commerce, Software & SaaS, Travel, Manufacturing Media, Retail & e-commerce, Software & SaaS

EPAM Systems vs Xenoss: overview

EPAM Systems

EPAM Systems was founded in 1993 and is headquartered in Newtown, Pennsylvania, with roughly 61,000 employees across delivery centers in Europe, the Americas and Asia. It is a public company listed on the New York Stock Exchange. On its Q2 2026 earnings call, management said EPAM had more than 5,700 Anthropic-certified engineers and was among the five largest certified partners worldwide, with AI-native work making up about 11% of revenue. EPAM employs its engineers directly and sells them as augmented capacity, dedicated teams or managed programs, though most large accounts end up in the managed model.

Xenoss

Xenoss was founded in 2013 by AdTech veterans and lists its headquarters in New York, with CEO Dmitry Sverdlik. Directories put headcount between 100 and 200. It specializes in AI and data engineering, including AI agents, real-time data systems and LLM knowledge bases, and favors small senior teams. Team extension appears in its history, but it does not run a dedicated staff augmentation offer.

Services and capabilities: EPAM Systems vs Xenoss

Capability EPAM Systems Xenoss
LLM / GenAI engineers ✓ ✓
MLOps & deployment ✓ ✗
Computer vision ✗ ✗
Data engineering ✓ ✓
AI agent development ✓ ✓
Fractional / part-time experts ✗ ✗
Risk-free trial period ✗ ✗
Nearshore time-zone overlap ✗ ✗

Tech stack comparison: EPAM Systems vs Xenoss

Framework / platform EPAM Systems Xenoss
PyTorch ✓ N/A
TensorFlow ✓ N/A
LangChain ✓ ✓
Hugging Face N/A N/A
OpenAI ✓ N/A
AWS ✓ ✓
Azure ✓ N/A
Databricks ✓ N/A
MLflow N/A N/A
Kubernetes ✓ N/A

Pricing comparison: EPAM Systems vs Xenoss

Criterion EPAM Systems Xenoss
Minimum engagement Not published Not published
Engagement models Full-time dedicated engineers, Dedicated team, Managed delivery Dedicated team, Managed delivery
Rate transparency Not public Not public
Price tier Mid-market Mid-market

Target audience comparison: EPAM Systems vs Xenoss

Dimension EPAM Systems Xenoss
Best company size Mid-market to enterprise Startup to mid-market
Best industries Financial services, Healthcare & life sciences, Retail & e-commerce Media, Retail & e-commerce, Software & SaaS
Best use cases Adding a 15-person GenAI squad to a bank's existing platform team, Rolling out agentic workflows across several business units under one master agreement Adding real-time feature engineering for a bidding model, Building an LLM knowledge base on marketing data
Typical project type Full-time dedicated engineers Dedicated team

EPAM Systems vs Xenoss: pros and cons

EPAM Systems
+ A Q2 2026 earnings call put its Anthropic-certified engineer count above 5,700, the largest verified GenAI bench on this list
+ Public-company reporting, audited financials and mature security reviews make vendor onboarding easier at banks and insurers
+ Can staff ten or more AI engineers in parallel across several time zones without running out of senior people
+ Deep data-platform practice means LLM work and the data engineering under it can come from one supplier
- Rates are among the highest on this list and are only shared after scoping
- Small requests for one or two engineers rarely get the same attention as large programs
- Engagements tend to drift toward managed delivery, which moves decisions away from your own team
Xenoss
+ High-load, real-time data experience
+ Small senior teams with low management overhead
+ Builds agents and knowledge bases on its own data work
- No dedicated staff augmentation page
- Industry focus is narrow outside AdTech and MarTech
- Headcount data varies

Who should choose EPAM Systems?

A typical fit: adding a 15-person GenAI squad to a bank's existing platform team.

Thousands of certified GenAI engineers inside a publicly listed firm with enterprise security and procurement processes. Minimum engagement is not publicly disclosed. Works best with clients in Financial services, Healthcare & life sciences, Retail & e-commerce, Software & SaaS, Travel, Manufacturing.

Who should choose Xenoss?

A typical fit: adding real-time feature engineering for a bidding model.

Real-time, high-load data engineering from AdTech roots. Minimum engagement is not publicly disclosed. Works best with clients in Media, Retail & e-commerce, Software & SaaS.

Decision matrix: EPAM Systems vs Xenoss

Your situation Recommended choice
You need a dedicated team for a long programme Both; EPAM Systems rates higher overall
You want the supplier to own delivery as well as staffing Both; EPAM Systems rates higher overall
You need one expert part-time Neither lists part-time experts; ask about reduced hours
You want to test an engineer before signing for months Neither publishes a trial; ask for a short first term
Your budget is at the lower end Compare: EPAM Systems (Not published) vs Xenoss (Not published)
You need overlap with U.S. working hours Neither is nearshore; agree overlap hours up front
You need specialist depth in a specific vertical EPAM Systems

Use case fit: EPAM Systems vs Xenoss

Use case EPAM Systems fit Xenoss fit Winner
Adding a 15-person GenAI squad to a bank's existing platform team Strong Strong Both equally
Rolling out agentic workflows across several business units under one master agreement Strong Limited EPAM Systems
Adding real-time feature engineering for a bidding model Strong Strong Both equally
Building an LLM knowledge base on marketing data Limited Strong Xenoss

Verdict: EPAM Systems vs Xenoss

EPAM Systems (4.6/5) is the stronger overall choice for most AI Staff Augmentation projects. Thousands of certified GenAI engineers inside a publicly listed firm with enterprise security and procurement processes.

Xenoss (3.8/5) is worth a look if you need building an LLM knowledge base on marketing data. If your situation matches that, Xenoss is a competitive option.

Related comparisons

EPAM Systems vs Xenoss FAQ

Is EPAM Systems better than Xenoss?

EPAM Systems (4.6/5) scores higher overall, but "better" depends on your use case. EPAM Systems's strongest advantage: a Q2 2026 earnings call put its Anthropic-certified engineer count above 5,700, the largest verified GenAI bench on this list. Xenoss's strongest advantage: High-load, real-time data experience.

How do EPAM Systems and Xenoss differ in pricing?

EPAM Systems uses time and materials for augmented engineers; dedicated team and managed program contracts; rates on request pricing. Xenoss uses team extension and project pricing; rates on request pricing. Neither firm publishes a full rate card; a discovery call is required for project-specific quotes.

Which is better for enterprise: EPAM Systems or Xenoss?

Xenoss 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 EPAM Systems and Xenoss?

EPAM Systems's primary differentiator is: thousands of certified GenAI engineers inside a publicly listed firm with enterprise security and procurement processes. Xenoss's primary differentiator is: Real-time, high-load data engineering from AdTech roots. They also differ in team size (61,000+ vs 100–200), minimum engagement (Not published vs Not published), and primary industries served (Financial services, Healthcare & life sciences vs Media, Retail & e-commerce).

Verify all details directly with each company before making a decision.