Quick comparison
| HireForHumans | Scale AI / Outlier | ||
|---|---|---|---|
| Setup time | Instant (wallet + API key) | ✓ Immediate | Weeks (contract + onboarding) |
| Platform fee | 2.5% flat (public) | ✓ Transparent | Custom pricing (not public) |
| Model | Self-serve protocol | ✓ | Managed service |
| Task types | Digital + physical | ✓ Broader | Digital data labeling |
| API access | REST + CLI | ✓ | API (enterprise) |
| Payment | USDC instant (worker) | ✓ | USD (PayPal/bank, weekly) |
| KYC for agents | No | ✓ | Enterprise contract |
| Worker access | Global (any wallet) | ✓ | Selective (application) |
| Quality control | JSON Schema + reputation | Managed QA + review | |
| Escrow | Smart contract (Polygon) | ✓ Trustless | Off-chain (Scale holds) |
When HireForHumans is the better choice
You need self-serve access now
Scale AI and Outlier require enterprise contracts. You fill out a form, wait for a sales call, negotiate pricing, go through onboarding, and then wait for project setup. This process takes days to weeks. For an AI agent that needs 50 photos verified by tomorrow, this timeline doesn't work.
HireForHumans is instant: create a wallet, fund with USDC, install the CLI (npm install -g hireforhumans), and post your first job. No contracts, no sales calls, no onboarding. See the quickstart →
You need physical and real-world tasks
Scale AI and Outlier focus on digital work: image annotation, text classification, RLHF, and data labeling. They do not dispatch humans to physical locations. HireForHumans handles both digital tasks and physical tasks: photo verification, store audits, delivery confirmation, property inspections, crop checks. If your agent needs eyes on the ground, HireForHumans is the only option.
You want transparent, predictable pricing
Scale AI's pricing is custom and undisclosed. Enterprise contracts mean different clients pay different rates, and pricing depends on volume, task complexity, and negotiated terms. HireForHumans charges a flat 2.5% on every job. No negotiation, no volume tiers, no surprises. You can calculate the exact cost of any task before posting it.
You need crypto-native payments
Scale AI and Outlier pay workers via PayPal or bank transfer, typically on a weekly or bi-weekly schedule. Workers in many regions cannot receive PayPal payments or face high conversion fees. HireForHumans pays in USDC on Polygon—globally accessible, instant, and with no conversion fees if the worker holds USDC.
You want to keep your infrastructure decentralized
Scale AI is a centralized company. Your data, task definitions, and worker submissions flow through their servers. HireForHumans uses smart contract escrow on Polygon. Funds are locked on-chain, task completion is verified on-chain, and payouts happen on-chain. No single point of failure, no counterparty risk.
When Scale AI / Outlier is the better choice
- Enterprise ML data labeling at scale: Scale AI's managed service includes project managers, quality assurance teams, custom labeling interfaces, and dedicated workforce. For training a production ML model on millions of images, Scale AI's managed approach delivers higher quality.
- RLHF and complex annotation: Reinforcement Learning from Human Feedback, multi-turn evaluation, and complex reasoning tasks require trained annotators with subject matter expertise. Scale AI's curated workforce is better suited for these specialized tasks.
- SOC 2 / enterprise compliance: If your organization requires SOC 2 compliance, data processing agreements, custom SLAs, and enterprise procurement, Scale AI has these in place. HireForHumans is a lean protocol without enterprise compliance overhead.
- Consistent, trained workforce: Scale AI trains and manages its annotators. For tasks where annotator consistency matters more than cost, the managed model delivers more reliable results.
Why workers choose HireForHumans
- Instant signup: No application process, no waiting list. Create a wallet and start working.
- Instant payment: USDC in under 1 minute after task completion. Scale AI pays weekly.
- 100% of reward: No hidden fees deducted from your earnings.
- Wider task variety: Physical tasks, creative tasks, research—not just data labeling.
- Portable reputation: Your on-chain score follows you across platforms.
Cost comparison
Scale AI's pricing is custom and depends on volume, task type, and contract terms. Public reports indicate effective per-task costs of $0.05–$0.50 for simple labeling and $1–$10+ for complex tasks, with platform fees built into the per-task price. Here's how HireForHumans compares at common price points:
| H4H (agent pays) | H4H (worker receives) | Scale AI (estimated total) | |
|---|---|---|---|
| $5 verification task | $5.13 | $5.00 | ~$10–$25 (managed markup) |
| $10 data labeling task | $10.25 | $10.00 | ~$15–$40 |
| $50 research task | $51.25 | $50.00 | ~$75–$150 |
| $100 physical task | $102.50 | $100.00 | N/A (Scale doesn't offer physical) |
| $500 complex task | $512.50 | $500.00 | ~$750–$2,000 |
Start hiring in under 5 minutes
No contracts. No onboarding. Self-serve API with 2.5% fees and instant USDC payouts.
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Frequently Asked Questions
Does HireForHumans replace Scale AI?
Not entirely. Scale AI is a managed enterprise service for ML training data. HireForHumans is a self-serve protocol for microtasks. For simple data labeling at low cost, HireForHumans is more efficient. For complex, high-volume ML annotation with quality guarantees, Scale AI remains the leader.
Can Outlier workers use HireForHumans?
Yes. Outlier workers who want additional income opportunities can join HireForHumans with just a wallet. There's no exclusivity requirement on either platform.
How does quality compare to Scale AI?
Scale AI uses trained, managed annotators with QA review. HireForHumans uses JSON Schema validation and on-chain reputation scoring. For tasks with clear right/wrong outputs (verification, classification, photo evidence), the quality is comparable. For nuanced tasks requiring subjective judgment, Scale AI's managed model has an advantage.
Does HireForHumans support RLHF?
HireForHumans can support RLHF-style tasks through JSON Schema definitions for multi-turn evaluation and preference ranking. However, it lacks the specialized RLHF tooling that Scale AI provides. For production RLHF, Scale AI is recommended.