Index.dev vs micro1: full comparison for 2026
Quick verdict
Index.dev (4.2/5) edges ahead of micro1 (3.7/5) overall. Index.dev is the better choice for startups that want a 30-day refundable trial before committing to a remote ML engineer. micro1 is the stronger option for AI teams that need many vetted contributors quickly for evaluation or data work. The right choice depends on your project size, budget, and required tech stack.
Index.dev vs micro1: head-to-head summary
| Criterion | Index.dev | micro1 |
|---|---|---|
| Founded | 2019 | 2022 |
| HQ | London, United Kingdom | California, USA |
| Team size | 30,000+ network | Estimates range from 11–50 staff to thousands including contractors |
| Rating | 4.2 / 5 | 3.7 / 5 |
| Primary differentiator | A 30-day trial with full refund on every placement | Automated AI interviews that screen candidates in high volume |
| Pricing model | Monthly rate per engineer; direct-hire fee option; 30-day trial with refund; rates on request | Hourly or monthly per contractor; one-week test option; rates on request |
| Min. engagement | Not published | Not published |
| Primary tech stack | Python, PyTorch, TensorFlow | Python, PyTorch, OpenAI |
| Industries served | SaaS, Fintech, E-commerce, Healthcare, AI labs | AI labs, Technology, SaaS, Finance, Healthcare |
Index.dev vs micro1: overview
Index.dev
Index.dev is a London company, founded in 2019 according to its own job ads, trading under the legal name Index Soft Limited. It calls itself an AI-first engineering talent platform. Its main network has more than 30,000 engineers in Latin America and Central and Eastern Europe, and a separate AI unit supplies Master's and PhD-level people for LLM fine-tuning and RAG work. Every engineer goes through five stages of vetting run by people, including a live screening call and technical validation, and Index.dev says about 1% are accepted. All placements come with a 30-day trial and a full refund if the match fails.
micro1
micro1 was founded in 2022 by Ali Ansari and is based in California. Its AI recruiter, Zara, runs a structured interview of 20 to 40 minutes with every applicant. The company raised a Series A at a $500 million valuation in September 2025 and now earns most of its revenue supplying vetted experts to AI labs for model training. Engineering teams can still hire through it, but an automated interview is a different thing from a senior engineer reviewing code, and its focus has moved toward lab work.
Services and capabilities: Index.dev vs micro1
| Capability | Index.dev | micro1 |
|---|---|---|
| ML engineers | ✓ | ✓ |
| LLM / GenAI engineers | ✓ | ✓ |
| AI agent developers | ✗ | ✗ |
| MLOps engineers | ✗ | ✗ |
| Computer vision engineers | ✗ | ✗ |
| NLP engineers | ✗ | ✗ |
| Data engineers | ✗ | ✗ |
| Engineer-led technical screen | ✗ | ✗ |
| Fractional / part-time experts | ✗ | ✗ |
| Trial before commitment | ✓ | ✓ |
| Nearshore time-zone overlap | ✓ | ✗ |
| Direct hire option | ✓ | ✗ |
Tech stack comparison: Index.dev vs micro1
| Framework / platform | Index.dev | micro1 |
|---|---|---|
| PyTorch | ✓ | ✓ |
| TensorFlow | ✓ | N/A |
| LangChain | ✓ | ✓ |
| Hugging Face | ✓ | N/A |
| OpenAI | ✓ | ✓ |
| AWS | ✓ | ✓ |
| Azure | N/A | N/A |
| Google Cloud | ✓ | N/A |
| Databricks | N/A | N/A |
| Kubernetes | N/A | N/A |
Pricing comparison: Index.dev vs micro1
| Criterion | Index.dev | micro1 |
|---|---|---|
| Minimum engagement | Not published | Not published |
| Engagement models | Dedicated engineer, Dedicated team, Direct hire, Trial period | Freelance contract, Trial period |
| Rate transparency | Not public | Not public |
| Price tier | Mid-market | Mid-market |
Target audience comparison: Index.dev vs micro1
| Dimension | Index.dev | micro1 |
|---|---|---|
| Best company size | Startup to mid-market | Startup to mid-market |
| Best industries | SaaS, Fintech, E-commerce | AI labs, Technology, SaaS |
| Best use cases | Trialling a Latin American ML engineer for a month before committing, Hiring a PhD-level specialist to fine-tune an open-source LLM | Hiring twenty LLM evaluators for a model release, Adding a contract ML engineer for a short project |
| Typical project type | Dedicated engineer | Freelance contract |
Index.dev vs micro1: pros and cons
| Index.dev | |
|---|---|
| + | The 30-day refundable trial is the most generous published trial on this page |
| + | A separate AI unit for advanced work such as fine-tuning |
| + | Clients can hire directly as well as contract |
| - | Vetting is human-led but not specifically run by ML engineers |
| - | Network figures and acceptance rates are company claims |
| - | Founding date only appears in job listings |
| micro1 | |
|---|---|
| + | Can screen a very large number of candidates fast |
| + | Experience with AI-lab evaluation work |
| + | A short trial before a longer contract |
| - | AI interviews replace engineer judgment in the screen |
| - | Most revenue now comes from AI labs, not product teams |
| - | Headquarters is listed differently across sources |
Who should choose Index.dev?
A typical fit: trialling a Latin American ML engineer for a month before committing.
A 30-day trial with full refund on every placement. Minimum engagement is not publicly disclosed. Works best with clients in SaaS, Fintech, E-commerce, Healthcare, AI labs.
Who should choose micro1?
A typical fit: hiring twenty LLM evaluators for a model release.
Automated AI interviews that screen candidates in high volume. Minimum engagement is not publicly disclosed. Works best with clients in AI labs, Technology, SaaS, Finance, Healthcare.
Decision matrix: Index.dev vs micro1
| Your situation | Recommended choice |
|---|---|
| You want a working engineer, not a recruiter, to run the technical screen | Neither documents an engineer-led screen; run your own technical interview |
| You need one specialist for a few days a week | Neither advertises part-time experts; ask about reduced hours |
| You need several engineers working as one team | Neither lists dedicated teams; check team size before signing |
| You want to test an engineer before committing | Both; Index.dev rates higher overall |
| Your budget is at the lower end | Compare: Index.dev (Not published) vs micro1 (Not published) |
| Your team works U.S. hours | Index.dev |
| You may want to hire the engineer permanently later | Index.dev |
Use case fit: Index.dev vs micro1
| Use case | Index.dev fit | micro1 fit | Winner |
|---|---|---|---|
| Trialling a Latin American ML engineer for a month before committing | Strong | Limited | Index.dev |
| Hiring a PhD-level specialist to fine-tune an open-source LLM | Strong | Strong | Both equally |
| Hiring twenty LLM evaluators for a model release | Strong | Strong | Both equally |
| Adding a contract ML engineer for a short project | Limited | Strong | micro1 |
Verdict: Index.dev vs micro1
Index.dev (4.2/5) is the stronger overall choice for most AI Engineer Staffing projects. A 30-day trial with full refund on every placement.
micro1 (3.7/5) is worth a look if you need adding a contract ML engineer for a short project. If your situation matches that, micro1 is a competitive option.
Related comparisons
Index.dev vs micro1 FAQ
Is Index.dev better than micro1?
Index.dev (4.2/5) scores higher overall, but "better" depends on your use case. Index.dev's strongest advantage: the 30-day refundable trial is the most generous published trial on this page. micro1's strongest advantage: can screen a very large number of candidates fast.
How do Index.dev and micro1 differ in pricing?
Index.dev uses monthly rate per engineer; direct-hire fee option; 30-day trial with refund; rates on request pricing. micro1 uses hourly or monthly per contractor; one-week test option; 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 micro1?
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 company before shortlisting.
What are the main differences between Index.dev and micro1?
Index.dev's primary differentiator is: a 30-day trial with full refund on every placement. micro1's primary differentiator is: automated AI interviews that screen candidates in high volume. They also differ in team size (30,000+ network vs Estimates range from 11–50 staff to thousands including contractors), minimum engagement (Not published vs Not published), and primary industries served (SaaS, Fintech vs AI labs, Technology).
Verify all details directly with each company before making a decision.