Best AI Staff Augmentation Companies

BairesDev vs LeewayHertz: full comparison for 2026

Quick verdict

BairesDev (4.3/5) edges ahead of LeewayHertz (3.6/5) overall. BairesDev is the better choice for U.S. companies needing several AI engineers on matching hours. LeewayHertz is the stronger option for hackett Group clients adding GenAI developers. The right choice depends on your project size, budget, and required tech stack.

BairesDev vs LeewayHertz: head-to-head summary

Criterion BairesDev LeewayHertz
Founded 2009 2007
HQ San Francisco, California, USA San Francisco, California, USA
Team size 4,000+ 100–250 (sources vary)
Rating 4.3 / 5 3.6 / 5
Primary differentiator A large salaried Latin American bench that works U.S. time zones GenAI app development backed by a public consulting parent
Pricing model Monthly per-engineer rates for staff augmentation; dedicated teams; project pricing; rates on request Project pricing and hire-a-developer rates; rates on request
Min. engagement Not published Not published
Primary tech stack Python, TensorFlow, PyTorch Python, LangChain, OpenAI
Industries served Software & SaaS, Financial services, Healthcare & life sciences, Media, Retail & e-commerce Financial services, Retail & e-commerce, Software & SaaS

BairesDev vs LeewayHertz: overview

BairesDev

BairesDev was founded in Buenos Aires in 2009 and now lists its headquarters in San Francisco. The company says it employs more than 4,000 professionals working remotely from over 50 countries, most of them in Latin America. It offers staff augmentation, dedicated teams and full software outsourcing, with an AI and data science practice inside the wider engineering group. BairesDev hires engineers onto its own payroll, so clients deal with one vendor contract rather than individual freelancers.

LeewayHertz

LeewayHertz was founded in 2007 and lists a San Francisco address, with much of its staff in India. Headcount estimates range from roughly 60 to 500. The Hackett Group acquired it in September 2024 for $7.8 million in purchase consideration, according to Hackett's SEC filings, and the two set up a joint venture called ZBrain XPLR. Its main business is building GenAI applications, and it hires out engineers as a secondary service.

Services and capabilities: BairesDev vs LeewayHertz

Capability BairesDev 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: BairesDev vs LeewayHertz

Framework / platform BairesDev LeewayHertz
PyTorch ✓ N/A
TensorFlow ✓ N/A
LangChain N/A ✓
Hugging Face N/A ✓
OpenAI ✓ ✓
AWS ✓ ✓
Azure ✓ N/A
Databricks ✓ N/A
MLflow N/A N/A
Kubernetes N/A N/A

Pricing comparison: BairesDev vs LeewayHertz

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

Target audience comparison: BairesDev vs LeewayHertz

Dimension BairesDev LeewayHertz
Best company size Startup to mid-market Startup to mid-market
Best industries Software & SaaS, Financial services, Healthcare & life sciences Financial services, Retail & e-commerce, Software & SaaS
Best use cases Adding three ML engineers to a U.S. product team on Eastern time, Staffing data engineering and model serving together for a new AI feature Adding a GenAI developer to a Hackett-led consulting program, Building a RAG assistant for internal documents
Typical project type Full-time dedicated engineers Managed delivery

BairesDev vs LeewayHertz: pros and cons

BairesDev
+ Full working-day overlap with U.S. teams makes pairing and live reviews easy
+ Can fill AI, data and the surrounding web roles from one contract
+ Engineers are salaried employees, so replacement is the vendor's problem
- AI is one practice among many, so screening depth for ML research roles varies
- Pricing is quoted per engagement and is reported to sit above smaller nearshore rivals
- Heavy marketing makes it hard to separate its AI claims from its general engineering pitch
LeewayHertz
+ Long experience shipping GenAI applications
+ Hackett ownership adds a consulting channel
+ Builds agents and RAG systems
- Acquired by The Hackett Group in 2024, so priorities may follow the parent's consulting work
- Headcount estimates vary widely
- Heavy content marketing makes independent assessment harder

Who should choose BairesDev?

A typical fit: adding three ML engineers to a U.S. product team on Eastern time.

A large salaried Latin American bench that works U.S. time zones. Minimum engagement is not publicly disclosed. Works best with clients in Software & SaaS, Financial services, Healthcare & life sciences, Media, Retail & e-commerce.

Who should choose LeewayHertz?

A typical fit: adding a GenAI developer to a Hackett-led consulting program.

GenAI app development backed by a public consulting parent. Minimum engagement is not publicly disclosed. Works best with clients in Financial services, Retail & e-commerce, Software & SaaS.

Decision matrix: BairesDev vs LeewayHertz

Your situation Recommended choice
You need a dedicated team for a long programme BairesDev
You want the supplier to own delivery as well as staffing Both; BairesDev 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: BairesDev (Not published) vs LeewayHertz (Not published)
You need overlap with U.S. working hours BairesDev
You need specialist depth in a specific vertical BairesDev

Use case fit: BairesDev vs LeewayHertz

Use case BairesDev fit LeewayHertz fit Winner
Adding three ML engineers to a U.S. product team on Eastern time Strong Strong Both equally
Staffing data engineering and model serving together for a new AI feature Strong Limited BairesDev
Adding a GenAI developer to a Hackett-led consulting program Strong Strong Both equally
Building a RAG assistant for internal documents Limited Strong LeewayHertz

Verdict: BairesDev vs LeewayHertz

BairesDev (4.3/5) is the stronger overall choice for most AI Staff Augmentation projects. A large salaried Latin American bench that works U.S. time zones.

LeewayHertz (3.6/5) is worth a look if you need building a RAG assistant for internal documents. If your situation matches that, LeewayHertz is a competitive option.

Related comparisons

BairesDev vs LeewayHertz FAQ

Is BairesDev better than LeewayHertz?

BairesDev (4.3/5) scores higher overall, but "better" depends on your use case. BairesDev's strongest advantage: full working-day overlap with U.S. teams makes pairing and live reviews easy. LeewayHertz's strongest advantage: long experience shipping GenAI applications.

How do BairesDev and LeewayHertz differ in pricing?

BairesDev uses monthly per-engineer rates for staff augmentation; dedicated teams; project pricing; rates on request pricing. LeewayHertz uses project pricing and hire-a-developer rates; 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: BairesDev 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 company before shortlisting.

What are the main differences between BairesDev and LeewayHertz?

BairesDev's primary differentiator is: a large salaried Latin American bench that works U.S. time zones. LeewayHertz's primary differentiator is: GenAI app development backed by a public consulting parent. They also differ in team size (4,000+ vs 100–250 (sources vary)), minimum engagement (Not published vs Not published), and primary industries served (Software & SaaS, Financial services vs Financial services, Retail & e-commerce).

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