Index.dev vs Brainpool AI: full comparison for 2026
Quick verdict
Index.dev (4.5/5) edges ahead of Brainpool AI (3.7/5) overall. Index.dev is the better choice for startups that want their money back if the first month doesn't work. Brainpool AI is the stronger option for academic ML depth for one defined project. The right choice depends on your project size, budget, and required tech stack.
Index.dev vs Brainpool AI: head-to-head summary
| Criterion | Index.dev | Brainpool AI |
|---|---|---|
| Founded | 2019 | 2017 |
| HQ | London, United Kingdom | London, United Kingdom |
| Team size | 30,000+ network | Small core team; 500-expert network |
| Rating | 4.5 / 5 | 3.7 / 5 |
| Primary differentiator | A refundable 30-day trial on every placement, plus direct hire | Project access to experts from leading UK universities |
| Pricing model | Monthly rate per engineer; direct-hire fee; 30-day refundable trial; rates on request | Project-based fees; rates on request |
| Min. engagement | Not published | Not published |
| Primary tech stack | Python, PyTorch, LangChain | Python, PyTorch, TensorFlow |
| Industries served | SaaS, Fintech, E-commerce, AI labs, Healthcare | Financial services, Retail, Healthcare, Media, Technology |
Index.dev vs Brainpool AI: overview
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.
Brainpool AI
Brainpool AI, which says it has operated since 2017 (directories give 2016), is a London company founded by researchers who met at University College London. It built a network of about 500 AI and ML experts from universities such as UCL, Oxford and Cambridge and sells access on a project basis alongside consultancy. More recently it has moved toward its own agent platform, Cortex. Buyers get academic depth by the project, but not dedicated full-time staff.
Services and capabilities: Index.dev vs Brainpool AI
| Capability | Index.dev | Brainpool AI |
|---|---|---|
| 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: Index.dev vs Brainpool AI
| Framework / platform | Index.dev | Brainpool AI |
|---|---|---|
| PyTorch | ✓ | ✓ |
| TensorFlow | N/A | ✓ |
| LangChain | ✓ | N/A |
| Hugging Face | ✓ | ✓ |
| OpenAI | ✓ | ✓ |
| AWS | ✓ | N/A |
| Azure | N/A | ✓ |
| Google Cloud | ✓ | N/A |
| Databricks | N/A | N/A |
| Kubernetes | N/A | N/A |
Pricing comparison: Index.dev vs Brainpool AI
| Criterion | Index.dev | Brainpool AI |
|---|---|---|
| Minimum engagement | Not published | Not published |
| Engagement models | Full-time dedicated, Dedicated team, Direct hire, Trial period | Part-time fractional, Project delivery |
| Rate transparency | Not public | Not public |
| Price tier | Mid-market | Mid-market |
Target audience comparison: Index.dev vs Brainpool AI
| Dimension | Index.dev | Brainpool AI |
|---|---|---|
| Best company size | Startup to mid-market | Startup to mid-market |
| Best industries | SaaS, Fintech, E-commerce | Financial services, Retail, Healthcare |
| Best use cases | Trialling a Latin American LLM engineer for a month, Hiring a PhD-level specialist to fine-tune a model | A short research project on a novel NLP problem, An expert review of a model's methodology |
| Typical project type | Full-time dedicated | Part-time fractional |
Index.dev vs Brainpool AI: pros and cons
| 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 |
| Brainpool AI | |
|---|---|
| + | Research-grade experts |
| + | Project-based buying |
| + | UK base |
| - | No full-time staffing |
| - | Shift toward its own platform may reduce expert work |
| - | Founding year differs by source |
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.
Who should choose Brainpool AI?
A typical fit: a short research project on a novel NLP problem.
Project access to experts from leading UK universities. Minimum engagement is not publicly disclosed. Works best with clients in Financial services, Retail, Healthcare, Media, Technology.
Decision matrix: Index.dev vs Brainpool AI
| Your situation | Recommended choice |
|---|---|
| You want one engineer full-time on a monthly contract | Index.dev |
| You only need a specialist a few days a week | Brainpool AI |
| You want to test an engineer before committing | Index.dev |
| 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: Index.dev (Not published) vs Brainpool AI (Not published) |
| You may want to hire the engineer permanently later | Index.dev |
| You want several engineers working as one team | Neither lists dedicated teams; check team size before signing |
Use case fit: Index.dev vs Brainpool AI
| Use case | Index.dev fit | Brainpool AI fit | Winner |
|---|---|---|---|
| Trialling a Latin American LLM engineer for a month | Strong | Limited | Index.dev |
| Hiring a PhD-level specialist to fine-tune a model | Strong | Limited | Index.dev |
| A short research project on a novel NLP problem | Strong | Strong | Both equally |
| An expert review of a model's methodology | Strong | Strong | Both equally |
Verdict: Index.dev vs Brainpool AI
Index.dev (4.5/5) is the stronger overall choice for most AI Staff Augmentation projects. A refundable 30-day trial on every placement, plus direct hire.
Brainpool AI (3.7/5) is worth a look if you need an expert review of a model's methodology. If your situation matches that, Brainpool AI is a competitive option.
Related comparisons
Index.dev vs Brainpool AI FAQ
Is Index.dev better than Brainpool AI?
Index.dev (4.5/5) scores higher overall, but "better" depends on your use case. Index.dev's strongest advantage: a full refund in the first 30 days lowers the cost of a bad match. Brainpool AI's strongest advantage: research-grade experts.
How do Index.dev and Brainpool AI differ in pricing?
Index.dev uses monthly rate per engineer; direct-hire fee; 30-day refundable trial; rates on request pricing. Brainpool AI uses project-based fees; 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: Index.dev or Brainpool AI?
Index.dev 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 Index.dev and Brainpool AI?
Index.dev's primary differentiator is: a refundable 30-day trial on every placement, plus direct hire. Brainpool AI's primary differentiator is: project access to experts from leading UK universities. They also differ in team size (30,000+ network vs Small core team; 500-expert network), minimum engagement (Not published vs Not published), and primary industries served (SaaS, Fintech vs Financial services, Retail).
Verify all details directly with each provider before making a decision.