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About HIL APIs
What is HIL APIs?
HIL APIs is a human-in-the-loop API that lets AI workflows route tasks requiring judgment, context, or a second look to verified human experts. It handles review, verification, research, classification, and multilingual task routing through a single structured API.
Who is it for?
It is for teams building AI systems that need accountable, auditable human input in specific languages or domains, such as e-commerce, support, or data verification. It is also for individuals who want to earn from AI by offering their expertise in languages and subjects they know.
What problem does it solve?
Automation often fails in edge cases, cultural contexts, or high-stakes decisions. HIL APIs adds a structured human checkpoint with text and image input, strict JSON output, and an audit trail, so software can validate and use the result. The system supports both 'minutes' mode for fast decisions and batch mode for throughput.
Real use cases
Use it for model-output review, human review in support operations, independent expert verification, or multilingual translation and classification tasks that need strict schema validation. The API accepts text and image inputs and returns independent human outputs or strict JSON.
Key features
- Human-in-the-loop API — Add a structured human checkpoint for AI review, verification, research, or classification.
- Expertise and language matching — Route tasks to verified people with the right language, market, subject, and cultural context.
- Strict JSON output — Receive validated structured data your software can audit and use programmatically.
- Text and image inputs — Submit rich content that needs human judgment.
- Minutes or batch modes — Choose fast single-task decisions or scheduled batches for throughput.
- Workflow rubric enforcement — Each task is completed by a qualified person using your defined workflow rubric.
- One contract, audit trail — Clear record of human decisions for accountability.
SaaSpartout Score
7.3
/10
Editorial score from our review methodology — not user ratings.
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HIL APIs Pricing
HIL APIs pricing: Invite-only pilot.
For comparison: the median starting price in AI Other is $19/month, measured across 206 tools we track. See the full SaaS Pricing Index →
Invite-only pilot
HIL APIs is currently in an invite-only pilot phase. Companies apply for API access. HIL reviews the workflow, required expertise, languages, and volume before granting test access. There is no public pricing listed.
For human experts, the platform is free to join — every applicant is verified, and invitations and paid opportunities depend on matching workflows and active demand.
Frequently asked questions
What is HIL APIs?
HIL APIs is a Human-in-the-Loop API that connects AI workflows to verified human experts for tasks needing judgment, like review, verification, classification, or multilingual translation. It returns structured JSON that software can validate.
Is HIL APIs free?
Joining the human expert network is free — you apply and get verified. For companies, API access is invite-only via an application process; there is no published pricing.
Who is HIL APIs best for?
It is best for companies building AI systems that need accountable human oversight for edge cases, quality checks, or multilingual/cultural context, and for individuals wanting to earn from AI review work.
What are alternatives to HIL APIs?
Alternatives include other human-in-the-loop data labeling and review platforms, general freelancing/on-demand expert platforms, or building internal QA teams. HIL APIs differentiates by offering a structured API with JSON schemas and an audit trail.
How does HIL APIs work?
You send a POST request with a workflow, mode, required language/expertise, and output preference. HIL matches the task to a verified expert, who applies your rubric, and returns the result as text or strict JSON in minutes or via batch.
Is HIL APIs suitable for high-volume AI data verification?
Yes, the system supports batch mode for throughput, independent human outputs, and strict JSON schemas that software can validate, making it suitable for tasks where human judgment is needed at scale.
