Best AI Staffing Agencies

Tensorway vs STX Next: full comparison for 2026

Quick verdict

Tensorway (4.8/5) edges ahead of STX Next (4.2/5) overall. Tensorway is the better choice for product teams adding AI engineers fast, two-week trial. STX Next is the stronger option for python product teams adding ML capacity. The right choice depends on your project size, budget, and required tech stack.

Tensorway vs STX Next: head-to-head summary

Criterion Tensorway STX Next
Founded 2019 2005
HQ Alicante, Spain Poznań, Poland
Team size 50–249 250–999
Rating 4.8 / 5 4.2 / 5
Primary differentiator Engineer-led screening with a free replacement if a hire doesn't fit Large Python bench with documented ML staff-augmentation work
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 Time and materials; team extension; rates on request
Min. engagement Not disclosed Not disclosed
Primary tech stack PyTorch, TensorFlow, LangChain Python, Django, PyTorch
Industries served Healthcare, Legal services, SaaS, Fintech, E-commerce and retail, Manufacturing, Logistics Real estate tech, Healthcare, Fintech, SaaS

Tensorway vs STX Next: 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).

STX Next

STX Next was founded in 2005 in Poznań, Poland, and runs delivery centers in Poland and Mexico. It describes itself as Europe's largest Python-focused engineering partner for data, AI and cloud (per company website; independently unverifiable), and Clutch places it in the 250–999 employee band. A Clutch review covers a 2023–2024 staff-augmentation engagement for a real-estate technology client involving machine learning, computer vision and recommendation systems. Other reviews describe multi-year Python team extensions.

Services and capabilities: Tensorway vs STX Next

Capability Tensorway STX Next
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 STX Next

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

Pricing comparison: Tensorway vs STX Next

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

Target audience comparison: Tensorway vs STX Next

Dimension Tensorway STX Next
Best company size Startup to mid-market Startup to mid-market
Best industries Healthcare, Legal services, SaaS Real estate tech, Healthcare, Fintech
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 a recommendation-systems engineer to a marketplace product, Extending a Python team with a computer-vision specialist
Typical project type Full-time dedicated engineers Full-time dedicated engineers

Tensorway vs STX Next: 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
STX Next
+ Python depth means ML and backend roles come from one bench
+ Documented multi-year team extensions
+ Mexico center adds U.S. time-zone coverage
- AI is a practice within a broader Python services company
- Largest-in-Europe positioning is the company's own claim
- No public rates

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 STX Next?

A typical fit: adding a recommendation-systems engineer to a marketplace product.

Large Python bench with documented ML staff-augmentation work. Minimum engagement is not publicly disclosed. Works best with clients in Real estate tech, Healthcare, Fintech, SaaS.

Decision matrix: Tensorway vs STX Next

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 STX Next (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 STX Next

Use case Tensorway fit STX Next 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 a recommendation-systems engineer to a marketplace product Strong Strong Both equally
Extending a Python team with a computer-vision specialist Limited Strong STX Next

Verdict: Tensorway vs STX Next

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.

STX Next (4.2/5) is worth a look if you need extending a Python team with a computer-vision specialist. If your situation matches that, STX Next is a competitive option.

Related comparisons

Tensorway vs STX Next FAQ

Is Tensorway better than STX Next?

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. STX Next's strongest advantage: python depth means ML and backend roles come from one bench.

How do Tensorway and STX Next 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. STX Next uses time and materials; team extension; 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 STX Next?

STX Next 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 STX Next?

Tensorway's primary differentiator is: engineer-led screening with a free replacement if a hire doesn't fit. STX Next's primary differentiator is: large Python bench with documented ML staff-augmentation work. They also differ in team size (50–249 vs 250–999), minimum engagement (Not disclosed vs Not disclosed), and primary industries served (Healthcare, Legal services vs Real estate tech, Healthcare).

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