Xenoss vs LeewayHertz: full comparison for 2026
Quick verdict
Xenoss (4.3/5) edges ahead of LeewayHertz (3.8/5) overall. Xenoss is the better choice for ad-tech and high-volume data teams. LeewayHertz is the stronger option for companies already using The Hackett Group or ZBrain. The right choice depends on your project size, budget, and required tech stack.
Xenoss vs LeewayHertz: head-to-head summary
| Criterion | Xenoss | LeewayHertz |
|---|---|---|
| Founded | 2013 | 2007 |
| HQ | New York, USA | San Francisco, USA (delivery in Gurugram, India) |
| Team size | 50–249 | 200–500 |
| Rating | 4.3 / 5 | 3.8 / 5 |
| Primary differentiator | Data engineers with ad-tech throughput experience | GenAI developers tied to the ZBrain platform |
| Pricing model | Time and materials; staff augmentation; rates on request | Dedicated developers; fixed project; rates on request |
| Min. engagement | Not disclosed | Not disclosed |
| Primary tech stack | Python, Apache Spark, Kafka | OpenAI, LangChain, ZBrain |
| Industries served | Ad tech, Media, Fintech, Retail and e-commerce | Fintech, Healthcare, Retail, Manufacturing |
Xenoss vs LeewayHertz: overview
Xenoss
Xenoss was founded in 2013 by ad-tech veterans led by CEO Dmitry Sverdlik and is based in New York, with offices in London and Kyiv. It describes itself as a specialized AI and data-engineering company, and Clutch places it in the 50–249 employee band. Client reviews describe staff augmentation in practice: one London ad-tech client hired Xenoss after failing to find engineers locally, and Xenoss sourced candidates from Ukraine and integrated them into the in-house team. Its background in high-throughput ad-tech systems shows in its data-engineering work.
LeewayHertz
LeewayHertz was founded in 2007 and, while it historically marketed itself from San Francisco, does most of its engineering in India. The Hackett Group acquired it in September 2024 to add generative-AI solution and implementation work, including the ZBrain platform. It offers dedicated developers alongside project delivery, though its public material leads with platforms and consulting more than staffing.
Services and capabilities: Xenoss vs LeewayHertz
| Capability | Xenoss | LeewayHertz |
|---|---|---|
| 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: Xenoss vs LeewayHertz
| Framework / platform | Xenoss | LeewayHertz |
|---|---|---|
| PyTorch | N/A | N/A |
| TensorFlow | N/A | N/A |
| LangChain | N/A | ✓ |
| Hugging Face | N/A | N/A |
| OpenAI | N/A | ✓ |
| AWS SageMaker | N/A | N/A |
| Azure ML | N/A | ✓ |
| Databricks | ✓ | N/A |
| MLflow | N/A | N/A |
| Kubernetes | ✓ | N/A |
Pricing comparison: Xenoss vs LeewayHertz
| Criterion | Xenoss | LeewayHertz |
|---|---|---|
| Minimum engagement | Not disclosed | Not disclosed |
| 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: Xenoss vs LeewayHertz
| Dimension | Xenoss | LeewayHertz |
|---|---|---|
| Best company size | Startup to mid-market | Startup to mid-market |
| Best industries | Ad tech, Media, Fintech | Fintech, Healthcare, Retail |
| Best use cases | Adding streaming-data engineers ahead of an ML launch, Placing ML engineers in a bidding or attribution product | Adding developers to a ZBrain-based agent project, Staffing a GenAI proof of concept at lower cost |
| Typical project type | Full-time dedicated engineers | Dedicated team |
Xenoss vs LeewayHertz: pros and cons
| Xenoss | |
|---|---|
| + | Strong on real-time data infrastructure that ML features depend on |
| + | Has placed engineers into UK teams that struggled to hire locally |
| + | Senior leadership comes from the industry it serves most |
| + | Covers both data engineering and model work |
| - | Ad-tech focus is narrower than general AI staffing |
| - | Mid-sized bench |
| - | Rates are not public |
| LeewayHertz | |
|---|---|
| + | Long GenAI project history for a company of its size |
| + | Backing of a listed consulting group |
| + | India delivery keeps costs lower |
| - | Acquired by The Hackett Group in 2024, so priorities may follow the parent's consulting agenda |
| - | Staffing is secondary to platform and consulting work |
| - | Heavy content marketing makes independent verification harder |
Who should choose Xenoss?
A typical fit: adding streaming-data engineers ahead of an ML launch.
Data engineers with ad-tech throughput experience. Minimum engagement is not publicly disclosed. Works best with clients in Ad tech, Media, Fintech, Retail and e-commerce.
Who should choose LeewayHertz?
A typical fit: adding developers to a ZBrain-based agent project.
GenAI developers tied to the ZBrain platform. Minimum engagement is not publicly disclosed. Works best with clients in Fintech, Healthcare, Retail, Manufacturing.
Decision matrix: Xenoss vs LeewayHertz
| Your situation | Recommended choice |
|---|---|
| You need full-ownership delivery on a defined project scope | Both offer fixed-price models |
| You need a large dedicated team for an ongoing programme | Xenoss |
| Your budget is at the lower end | Compare: Xenoss (Not disclosed) vs LeewayHertz (Not disclosed) |
| You need specialist depth in a specific vertical | Xenoss |
| 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: Xenoss vs LeewayHertz
| Use case | Xenoss fit | LeewayHertz fit | Winner |
|---|---|---|---|
| Adding streaming-data engineers ahead of an ML launch | Strong | Strong | Both equally |
| Placing ML engineers in a bidding or attribution product | Strong | Limited | Xenoss |
| Adding developers to a ZBrain-based agent project | Strong | Strong | Both equally |
| Staffing a GenAI proof of concept at lower cost | Limited | Strong | LeewayHertz |
Verdict: Xenoss vs LeewayHertz
Xenoss (4.3/5) is the stronger overall choice for most AI Staffing projects. Data engineers with ad-tech throughput experience.
LeewayHertz (3.8/5) is worth a look if you need staffing a GenAI proof of concept at lower cost. If your situation matches that, LeewayHertz is a competitive option.
Related comparisons
Xenoss vs LeewayHertz FAQ
Is Xenoss better than LeewayHertz?
Xenoss (4.3/5) scores higher overall, but "better" depends on your use case. Xenoss's strongest advantage: strong on real-time data infrastructure that ML features depend on. LeewayHertz's strongest advantage: long GenAI project history for a company of its size.
How do Xenoss and LeewayHertz differ in pricing?
Xenoss uses time and materials; staff augmentation; rates on request pricing. LeewayHertz uses dedicated developers; fixed project; 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: Xenoss or LeewayHertz?
LeewayHertz is the larger team and typically the better enterprise-scale choice. For very large programmes, verify team size and compliance coverage directly with each agency before shortlisting.
What are the main differences between Xenoss and LeewayHertz?
Xenoss's primary differentiator is: data engineers with ad-tech throughput experience. LeewayHertz's primary differentiator is: GenAI developers tied to the ZBrain platform. They also differ in team size (50–249 vs 200–500), minimum engagement (Not disclosed vs Not disclosed), and primary industries served (Ad tech, Media vs Fintech, Healthcare).
Verify all details directly with each agency before making a decision.