Top AI Staff Augmentation Services

Tensorway vs Index.dev: full comparison for 2026

Quick verdict

Tensorway (4.8/5) edges ahead of Index.dev (4.5/5) overall. Tensorway is the better choice for starting small, testing fast and adjusting headcount every month. Index.dev is the stronger option for startups that want their money back if the first month doesn't work. The right choice depends on your project size, budget, and required tech stack.

Tensorway vs Index.dev: head-to-head summary

Criterion Tensorway Index.dev
Founded 2019 2019
HQ Alicante, Spain London, United Kingdom
Team size 50–249 30,000+ network
Rating 4.8 / 5 4.5 / 5
Primary differentiator Full-time, part-time and two-week trial options from the same AI-only provider A refundable 30-day trial on every placement, plus direct hire
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 Monthly rate per engineer; direct-hire fee; 30-day refundable trial; rates on request
Min. engagement Not disclosed Not published
Primary tech stack Python, PyTorch, LangChain Python, PyTorch, LangChain
Industries served Legal services, SaaS, Fintech, Healthcare, Retail and e-commerce, Logistics SaaS, Fintech, E-commerce, AI labs, Healthcare

Tensorway vs Index.dev: overview

Tensorway

Tensorway, based in Alicante, Spain since 2019, sells AI engineers in three shapes, and that flexibility is why it tops this list. A full-time dedicated engineer is billed at a monthly rate. A part-time fractional expert is billed by the hour or the week. Either way, the work starts with a two-week trial sprint, and the commitment is monthly, so a team can grow or shrink between sprints (per company website; independently unverifiable). Its engineering habits come from a lineage of more than 20 years in software. Squads usually begin with two to five LLM, agent or data engineers, and Tensorway handles contracts and admin. In one published case, U.S. law practice Liner Legal cut medical-record review from about a week to 5–15 minutes (per company website; independently unverifiable).

Index.dev

Index.dev, legally Index Soft Limited, is a London talent platform that its job ads date to 2019. Its buying terms are the clearest of any network here: every placement carries a 30-day trial with a full refund if the match fails. You can contract one engineer, build a dedicated offshore team or hire someone directly. The main pool of more than 30,000 engineers sits in Latin America and Central and Eastern Europe, and a separate AI unit supplies Master's and PhD-level people for fine-tuning and retrieval work. Vetting runs through five stages with human reviewers.

Services and capabilities: Tensorway vs Index.dev

Capability Tensorway Index.dev
Full-time dedicated engineers ✓ ✓
Part-time / fractional experts ✓ ✗
Dedicated team ✓ ✓
Trial before commitment ✓ ✓
Published rates ✗ ✗
Direct hire option ✗ ✓
Subscription or output-based pricing ✗ ✗
Nearshore time-zone overlap ✗ ✓
LLM / GenAI engineers ✓ ✓
MLOps ✗ ✗
Computer vision ✗ ✗
Data engineering ✓ ✗

Tech stack comparison: Tensorway vs Index.dev

Framework / platform Tensorway Index.dev
PyTorch ✓ ✓
TensorFlow N/A N/A
LangChain ✓ ✓
Hugging Face ✓ ✓
OpenAI ✓ ✓
AWS ✓ ✓
Azure N/A N/A
Google Cloud ✓ ✓
Databricks N/A N/A
Kubernetes ✓ N/A

Pricing comparison: Tensorway vs Index.dev

Criterion Tensorway Index.dev
Minimum engagement Not disclosed Not published
Engagement models Full-time dedicated, Part-time fractional, Trial period Full-time dedicated, Dedicated team, Direct hire, Trial period
Rate transparency Not public Not public
Price tier Mid-market Mid-market

Target audience comparison: Tensorway vs Index.dev

Dimension Tensorway Index.dev
Best company size Startup to mid-market Startup to mid-market
Best industries Legal services, SaaS, Fintech SaaS, Fintech, E-commerce
Best use cases Starting with a two-week trial sprint before hiring a full-time LLM engineer, Adding a part-time agent specialist ten hours a week to review an in-house build Trialling a Latin American LLM engineer for a month, Hiring a PhD-level specialist to fine-tune a model
Typical project type Full-time dedicated Full-time dedicated

Tensorway vs Index.dev: pros and cons

Tensorway
+ You can buy a whole engineer, part of one, or a two-week trial first, without switching providers
+ Monthly commitment that can change between sprints, and a free replacement if someone doesn't fit (per company website)
+ No recruiting fees, local employment contracts or benefits admin on your side
+ Senior AI engineers screen candidates with a code review and a practical task
- No published rate card; you need a call to get numbers
- Covers AI and ML roles only, so general software seats need another provider
- Time-zone overlap is arranged per engagement rather than promised as a nearshore model
Index.dev
+ A full refund in the first 30 days lowers the cost of a bad match
+ Contract and direct-hire routes from one provider
+ Talent in both U.S.-friendly and European time zones
- Engineers are network members, not employees
- Acceptance-rate figures are the company's own
- No published monthly rates

Who should choose Tensorway?

A typical fit: starting with a two-week trial sprint before hiring a full-time LLM engineer.

Full-time, part-time and two-week trial options from the same AI-only provider. Minimum engagement is not publicly disclosed. Works best with clients in Legal services, SaaS, Fintech, Healthcare, Retail and e-commerce, Logistics.

Who should choose Index.dev?

A typical fit: trialling a Latin American LLM engineer for a month.

A refundable 30-day trial on every placement, plus direct hire. Minimum engagement is not publicly disclosed. Works best with clients in SaaS, Fintech, E-commerce, AI labs, Healthcare.

Decision matrix: Tensorway vs Index.dev

Your situation Recommended choice
You want one engineer full-time on a monthly contract Both; Tensorway rates higher overall
You only need a specialist a few days a week Tensorway
You want to test an engineer before committing Both; Tensorway rates higher overall
You need a rate before the first call Neither publishes rates; ask both for a written rate card
Your budget is at the lower end Compare: Tensorway (Not disclosed) vs Index.dev (Not published)
You may want to hire the engineer permanently later Index.dev
You want several engineers working as one team Tensorway

Use case fit: Tensorway vs Index.dev

Use case Tensorway fit Index.dev fit Winner
Starting with a two-week trial sprint before hiring a full-time LLM engineer Strong Limited Tensorway
Adding a part-time agent specialist ten hours a week to review an in-house build Strong Limited Tensorway
Trialling a Latin American LLM engineer for a month Limited Strong Index.dev
Hiring a PhD-level specialist to fine-tune a model Strong Strong Both equally

Verdict: Tensorway vs Index.dev

Tensorway (4.8/5) is the stronger overall choice for most AI Staff Augmentation projects. Full-time, part-time and two-week trial options from the same AI-only provider.

Index.dev (4.5/5) is worth a look if you need hiring a PhD-level specialist to fine-tune a model. If your situation matches that, Index.dev is a competitive option.

Related comparisons

Tensorway vs Index.dev FAQ

Is Tensorway better than Index.dev?

Tensorway (4.8/5) scores higher overall, but "better" depends on your use case. Tensorway's strongest advantage: you can buy a whole engineer, part of one, or a two-week trial first, without switching providers. Index.dev's strongest advantage: a full refund in the first 30 days lowers the cost of a bad match.

How do Tensorway and Index.dev 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. Index.dev uses monthly rate per engineer; direct-hire fee; 30-day refundable trial; 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 Index.dev?

Tensorway is the larger team and typically the better enterprise-scale choice. For very large programmes, verify team size and compliance coverage directly with each provider before shortlisting.

What are the main differences between Tensorway and Index.dev?

Tensorway's primary differentiator is: Full-time, part-time and two-week trial options from the same AI-only provider. Index.dev's primary differentiator is: a refundable 30-day trial on every placement, plus direct hire. They also differ in team size (50–249 vs 30,000+ network), minimum engagement (Not disclosed vs Not published), and primary industries served (Legal services, SaaS vs SaaS, Fintech).

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