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Mercor and Braintrust both target senior engineers and technical professionals looking for high-value AI and software projects. While they occupy a similar premium tier of the gig market, their business models and client bases differ significantly.
Mercor is purpose-built for AI lab work — its entire platform is oriented around connecting vetted engineers with AI research organizations. Braintrust takes a different approach with its Web3-native, token-based model where the platform itself is community-owned, meaning workers keep 100% of what clients pay with zero platform rake.
Pay Range
$25-250/hr
Reliability
Very ReliableOnboarding Time
1-3 weeks (interview + assessment + trial)
Payment Frequency
weekly
Best For
Software engineers, domain experts (medicine, law, finance), data scientists, ML engineers, and language specialists looking for high-paying remote AI gig work. Ideal for experienced professionals who can pass AI interviews and technical assessments.
Pros
Mercor advertises pay rates of $30–150/hr, with most active AI lab contracts landing in the $50–100/hr range. Rates depend heavily on your domain (ML research, software engineering, data science) and the specific AI lab client. Onboarding takes 3–5 days via an AI-driven review process, so you can be earning quickly if you pass the initial screen.
Braintrust rates run $50–200/hr, with the ceiling notably higher than Mercor. The key differentiator: Braintrust charges clients a fee and remits 100% of the worker-facing rate to you — there is no platform cut on your earnings. Enterprise clients like Nestlé, Coinbase, and Goldman Sachs use the platform, which supports rates at the top of the range. Vetting is more involved, typically taking 1–2 weeks through a combination of skills assessments and human review.
For raw earning ceiling, Braintrust wins. For speed-to-first-payment, Mercor wins. Workers with strong AI/ML backgrounds should consider applying to both.
Mercor is specifically designed for AI lab projects: RLHF annotation, AI model evaluation, prompt engineering, and software engineering roles at AI-focused companies. If your goal is to work on cutting-edge AI research tasks, Mercor's client base is hard to beat — it has direct relationships with major AI labs.
Braintrust covers a broader range of technical work: full-stack development, data science, product management, and design alongside AI-focused roles. This gives experienced generalists more options, but it also means AI-specific roles are a subset rather than the platform's core offering.
Bottom Line
Both platforms are legitimate and pay well above industry average. If your background is AI/ML and you want to start earning quickly at a solid rate, Mercor is the faster path. If you have the patience for a more rigorous vetting process and want the absolute highest earning ceiling with no platform cut, Braintrust delivers. Many senior engineers keep active accounts on both. View Mercor → · View Braintrust →
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Cons
Pay Range
$50-200/hr
Reliability
ReliableOnboarding Time
1-4 weeks
Payment Frequency
bi-weekly
Best For
Senior AI/ML professionals seeking top compensation
Pros
Cons