ITRex Group vs Belitsoft: full comparison for 2026
Quick verdict
ITRex Group (4.3/5) edges ahead of Belitsoft (3.9/5) overall. ITRex Group is the better choice for enterprises pairing generative AI with existing data infrastructure. Belitsoft is the stronger option for teams wanting generative AI from an established staff augmentation partner. The right choice depends on your project size, budget, and required tech stack.
ITRex Group vs Belitsoft: head-to-head summary
| Criterion | ITRex Group | Belitsoft |
|---|---|---|
| Founded | 2009 | 2004 |
| HQ | Santa Monica, United States | Warsaw, Poland |
| Team size | 201-250 | 250-400 |
| Rating | 4.3 / 5 | 3.9 / 5 |
| Primary differentiator | Fifteen-plus years combining AI delivery with the data engineering it depends on | Twenty years of outsourcing delivery with generative AI added as a distinctly recent practice |
| Pricing model | Fixed project, dedicated team, or retainer | Dedicated team or staff augmentation |
| Min. engagement | Not disclosed | Not disclosed |
| Primary tech stack | Python, TensorFlow, OpenAI API | Python, OpenAI API, AWS |
| Industries served | Healthcare, Manufacturing, Retail & e-commerce, Logistics | Healthcare, Fintech, E-learning |
ITRex Group vs Belitsoft: overview
ITRex Group
ITRex has been based in Southern California since 2009, and public headcount estimates range from around 221 up to over 250 employees across three continents. The agency pairs generative AI and machine learning with data analytics and cloud computing rather than offering AI in isolation, which means clients get a partner who can handle the data plumbing a generative AI system needs before the model itself gets built. That broader scope costs some depth relative to generative-AI-only specialists but avoids a common integration bottleneck.
Belitsoft
Belitsoft was founded in 2004 and is headquartered in Warsaw, Poland, with over 250 core employees and more than 400 developers, testers, and DevOps staff distributed across Poland, Latvia, and Georgia. The company expanded into cloud and generative AI development in 2024, layering AI solutions on top of an already-established web and mobile development and team augmentation business. That makes generative AI a genuinely recent addition rather than a rebrand of older services.
Services and capabilities: ITRex Group vs Belitsoft
| Capability | ITRex Group | Belitsoft |
|---|---|---|
| Generative AI | ✓ | ✓ |
| Machine learning | ✓ | ✗ |
| AI agents | ✗ | ✗ |
| MLOps | ✗ | ✗ |
| AI consulting | ✓ | ✓ |
| Fixed-price projects | ✓ | ✗ |
| Dedicated team model | ✓ | ✓ |
Tech stack comparison: ITRex Group vs Belitsoft
| Framework / platform | ITRex Group | Belitsoft |
|---|---|---|
| Python | ✓ | ✓ |
| OpenAI API | ✓ | ✓ |
| PyTorch | N/A | N/A |
| LangChain | N/A | N/A |
| AWS | ✓ | ✓ |
| Azure | ✓ | N/A |
| Kubernetes | ✓ | N/A |
Pricing comparison: ITRex Group vs Belitsoft
| Criterion | ITRex Group | Belitsoft |
|---|---|---|
| Minimum engagement | Not disclosed | Not disclosed |
| Engagement models | Fixed project, Dedicated team, Retainer | Dedicated team, Staff augmentation |
| Rate transparency | Not public | Not public |
| Price tier | Mid-market | Mid-market |
Target audience comparison: ITRex Group vs Belitsoft
| Dimension | ITRex Group | Belitsoft |
|---|---|---|
| Best company size | Startup to mid-market | Startup to mid-market |
| Best industries | Healthcare, Manufacturing, Retail & e-commerce | Healthcare, Fintech, E-learning |
| Best use cases | Modernizing a legacy data warehouse so it can actually feed a generative AI model., Running a generative AI pilot that needs to connect into existing enterprise cloud systems. | Augmenting an internal team with generative AI engineers on a staff-aug basis., Working with an established outsourcing partner newly investing in generative AI. |
| Typical project type | Fixed project | Dedicated team |
ITRex Group vs Belitsoft: pros and cons
| ITRex Group | |
|---|---|
| + | Combines generative AI work with the data engineering most AI projects actually need first. |
| + | Fifteen-plus years of history across three continents. |
| + | Enterprise client mix means the team is comfortable with procurement cycles. |
| + | Works across both AWS and Azure, reducing platform lock-in for clients. |
| - | Data and cloud breadth means generative AI is one specialty among several, not the sole focus |
| - | Employee counts vary meaningfully across public sources |
| Belitsoft | |
|---|---|
| + | Two decades of outsourcing and staff augmentation experience across Poland, Latvia, and Georgia. |
| + | Transparent about generative AI being a 2024 addition rather than overstating a longer history. |
| + | Over 400 combined technical staff supports flexible team augmentation. |
| + | Established e-learning industry presence gives it relevant vertical experience. |
| - | Generative AI practice is genuinely new as of 2024, with a shorter track record than most on this list |
| - | AI sits alongside a broader outsourcing business rather than as the firm's core identity |
Who should choose ITRex Group?
A typical fit: modernizing a legacy data warehouse so it can actually feed a generative AI model.
Fifteen-plus years combining AI delivery with the data engineering it depends on. Minimum engagement is not publicly disclosed. Works best with clients in Healthcare, Manufacturing, Retail & e-commerce, Logistics.
Who should choose Belitsoft?
A typical fit: augmenting an internal team with generative AI engineers on a staff-aug basis.
Twenty years of outsourcing delivery with generative AI added as a distinctly recent practice. Minimum engagement is not publicly disclosed. Works best with clients in Healthcare, Fintech, E-learning.
Decision matrix: ITRex Group vs Belitsoft
| Your situation | Recommended choice |
|---|---|
| You need full-ownership delivery on a defined project scope | ITRex Group |
| You need a large dedicated team for an ongoing programme | ITRex Group |
| Your budget is at the lower end | Compare: ITRex Group (Not disclosed) vs Belitsoft (Not disclosed) |
| You need specialist depth in a specific vertical | ITRex Group |
| You need staff augmentation or team extension | Neither; consider alternatives that offer staff aug |
| You need consulting before committing to a build | ITRex Group |
Use case fit: ITRex Group vs Belitsoft
| Use case | ITRex Group fit | Belitsoft fit | Winner |
|---|---|---|---|
| Modernizing a legacy data warehouse so it can actually feed a generative AI model. | Strong | Limited | ITRex Group |
| Running a generative AI pilot that needs to connect into existing enterprise cloud systems. | Strong | Limited | ITRex Group |
| Augmenting an internal team with generative AI engineers on a staff-aug basis. | Limited | Strong | Belitsoft |
| Working with an established outsourcing partner newly investing in generative AI. | Limited | Strong | Belitsoft |
| Fixed-price build | Limited | Limited | Both equally |
| Staff augmentation | Limited | Strong | Belitsoft |
Verdict: ITRex Group vs Belitsoft
ITRex Group (4.3/5) is the stronger overall choice for most Generative AI Development projects. Fifteen-plus years combining AI delivery with the data engineering it depends on.
Belitsoft (3.9/5) is worth a look if you need working with an established outsourcing partner newly investing in generative AI. If your situation matches that, Belitsoft is a competitive option.
Related comparisons
ITRex Group vs Belitsoft FAQ
Is ITRex Group better than Belitsoft?
ITRex Group (4.3/5) scores higher overall, but "better" depends on your use case. ITRex Group's strongest advantage: combines generative AI work with the data engineering most AI projects actually need first. Belitsoft's strongest advantage: two decades of outsourcing and staff augmentation experience across Poland, Latvia, and Georgia.
How do ITRex Group and Belitsoft differ in pricing?
ITRex Group uses fixed project, dedicated team, or retainer pricing. Belitsoft uses dedicated team or staff augmentation pricing. Neither firm publishes a full rate card; a discovery call is required for project-specific quotes.
Which is better for enterprise: ITRex Group or Belitsoft?
Belitsoft 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 ITRex Group and Belitsoft?
ITRex Group's primary differentiator is: fifteen-plus years combining AI delivery with the data engineering it depends on. Belitsoft's primary differentiator is: twenty years of outsourcing delivery with generative AI added as a distinctly recent practice. They also differ in team size (201-250 vs 250-400), minimum engagement (Not disclosed vs Not disclosed), and primary industries served (Healthcare, Manufacturing vs Healthcare, Fintech).
Verify all details directly with each company before making a decision.