Best AI Staffing Agencies

Tensorway vs LeewayHertz: full comparison for 2026

Quick verdict

Tensorway (4.8/5) edges ahead of LeewayHertz (3.8/5) overall. Tensorway is the better choice for product teams adding AI engineers fast, two-week trial. 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.

Tensorway vs LeewayHertz: head-to-head summary

Criterion Tensorway LeewayHertz
Founded 2019 2007
HQ Alicante, Spain San Francisco, USA (delivery in Gurugram, India)
Team size 50–249 200–500
Rating 4.8 / 5 3.8 / 5
Primary differentiator Engineer-led screening with a free replacement if a hire doesn't fit GenAI developers tied to the ZBrain platform
Pricing model Monthly rate for full-time dedicated engineers; hourly or weekly billing for part-time fractional experts; two-week trial sprint; rate card on request Dedicated developers; fixed project; rates on request
Min. engagement Not disclosed Not disclosed
Primary tech stack PyTorch, TensorFlow, LangChain OpenAI, LangChain, ZBrain
Industries served Healthcare, Legal services, SaaS, Fintech, E-commerce and retail, Manufacturing, Logistics Fintech, Healthcare, Retail, Manufacturing

Tensorway vs LeewayHertz: overview

Tensorway

Tensorway is an AI engineering company founded in 2019 and based in Alicante, Spain, with more than 20 years of software engineering experience in its leadership and delivery processes. Its staff-augmentation service places ML engineers, LLM engineers, AI agent developers, MLOps engineers, computer-vision and NLP specialists, data engineers and RAG specialists directly into a client's own team, where they work in the client's Slack, Jira and repositories. Candidates are screened by senior AI engineers through a code review, a practical task in their specialization and a communication check, so the client receives a shortlist of two or three people that is already technically vetted. Tensorway handles contracts and admin; the first engineer typically starts within one to two weeks and a full squad within three to four weeks (per company website; independently unverifiable). One published case study describes a U.S. law practice, Liner Legal, cutting medical-record processing from about a week to 5–15 minutes (per company website; independently unverifiable).

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: Tensorway vs LeewayHertz

Capability Tensorway 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: Tensorway vs LeewayHertz

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

Pricing comparison: Tensorway vs LeewayHertz

Criterion Tensorway LeewayHertz
Minimum engagement Not disclosed Not disclosed
Engagement models Full-time dedicated engineers, Part-time fractional experts, Trial period Dedicated team, Managed delivery
Rate transparency Not public Not public
Price tier Mid-market Mid-market

Target audience comparison: Tensorway vs LeewayHertz

Dimension Tensorway LeewayHertz
Best company size Startup to mid-market Startup to mid-market
Best industries Healthcare, Legal services, SaaS Fintech, Healthcare, Retail
Best use cases Adding an LLM engineer and a RAG specialist to an existing SaaS product team, Trialing a single ML engineer for two weeks before committing to a monthly contract 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

Tensorway vs LeewayHertz: pros and cons

Tensorway
+ Candidates are screened by working AI engineers through a code review and a practical task, so your interviews can focus on team fit
+ A shortlist of two or three people usually arrives within a week of the discovery call
+ A poor fit is replaced at no cost, and the monthly commitment can be adjusted between sprints
+ All code, documentation and trained models stay in your repositories, which keeps vendor lock-in off the table
+ Contracts, local employment paperwork and benefits admin are handled by Tensorway rather than your HR team
- No public rate card, so budgeting starts with a sales call
- The bench is far smaller than the large talent networks, which matters if you need ten or more engineers at once
- AI and ML roles only; general full-stack or QA staffing is out of scope
- Time-zone overlap is arranged per engagement instead of guaranteed by a fixed nearshore location
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 Tensorway?

A typical fit: adding an LLM engineer and a RAG specialist to an existing SaaS product team.

Engineer-led screening with a free replacement if a hire doesn't fit. Minimum engagement is not publicly disclosed. Works best with clients in Healthcare, Legal services, SaaS, Fintech, E-commerce and retail, Manufacturing, Logistics.

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: Tensorway 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 Tensorway
Your budget is at the lower end Compare: Tensorway (Not disclosed) vs LeewayHertz (Not disclosed)
You need specialist depth in a specific vertical Tensorway
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: Tensorway vs LeewayHertz

Use case Tensorway fit LeewayHertz fit Winner
Adding an LLM engineer and a RAG specialist to an existing SaaS product team Strong Strong Both equally
Trialing a single ML engineer for two weeks before committing to a monthly contract Strong Limited Tensorway
Adding developers to a ZBrain-based agent project Strong Strong Both equally
Staffing a GenAI proof of concept at lower cost Strong Strong Both equally

Verdict: Tensorway vs LeewayHertz

Tensorway (4.8/5) is the stronger overall choice for most AI Staffing projects. Engineer-led screening with a free replacement if a hire doesn't fit.

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

Tensorway vs LeewayHertz FAQ

Is Tensorway better than LeewayHertz?

Tensorway (4.8/5) scores higher overall, but "better" depends on your use case. Tensorway's strongest advantage: candidates are screened by working AI engineers through a code review and a practical task, so your interviews can focus on team fit. LeewayHertz's strongest advantage: long GenAI project history for a company of its size.

How do Tensorway and LeewayHertz differ in pricing?

Tensorway uses monthly rate for full-time dedicated engineers; hourly or weekly billing for part-time fractional experts; two-week trial sprint; rate card 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: Tensorway 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 Tensorway and LeewayHertz?

Tensorway's primary differentiator is: engineer-led screening with a free replacement if a hire doesn't fit. 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 (Healthcare, Legal services vs Fintech, Healthcare).

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