AI Humanizer API
SOC 2 Type I

AI Humanizer API

Transform AI-generated text into natural, human-like content through a synchronous request, webhook, or polling workflow.

Try the Humanizer API today

AI HUMANIZER
Input 244
curl -X POST https://developer-portal.walterwrites.ai/api/humanizer/ -H "Content-Type: application/json" -H "X-API-Key: YOUR_API_KEY" -d '{ "content": "Artificial intelligence has transformed many industries." }'
Output
"status": "success", "task_id": null, "result": "AI has changed many industries.", "execution_time": 2.34, "word_count": 7, "credits_remaining": 1993

Integrate the AI Humanizer API into any stack.

From writing apps to CMS pipelines to bulk content ops, humanization that fits the workflow your team already runs.

  • Writing apps and AI creator tools

    Embed in any writing app or editor stack.

  • CMS humanization pipelines

    Post-process AI drafts before they hit your CMS.

  • High-volume content humanization at scale

    Rewrite product descriptions, email variants, and marketing copy at scale.

Pair humanizationwith the rest of Walter.

Use one developer portal and scoped API keys for humanization, AI text detection, grammar correction, plagiarism scanning, and AI image detection.

AI Detector API interface preview
AI Detector API interface preview

AI Detector API

Live

Analyze text for AI-generated content with confidence scores and sentence-level details.

AI Humanizer API interface preview
AI Humanizer API interface preview

AI Humanizer API

Live

Transform AI-generated text into natural, human-like content through a documented REST endpoint.

AI Voice Detector API interface preview
AI Voice Detector API interface preview

AI Voice Detector API

Analyze uploaded audio for signs of AI-generated speech.

Plagiarism Checker API interface preview
Plagiarism Checker API interface preview

Plagiarism Checker API

Live

Scan text against web sources and return a score, matched URLs, and highlighted character ranges.

Grammar Checker API interface preview
Grammar Checker API interface preview

Grammar Checker API

Live

Correct grammar, spelling, and punctuation and return corrected text plus a complete word-level diff.

AI Image Detector API interface preview
AI Image Detector API interface preview

AI Image Detector API

Live

Upload an image and receive a real, fake, or inpainting verdict with confidence and per-class probabilities.

AI Humanizer API pricing by monthly volume.

Monthly plans with included word quotas. No commitments. Volume discounts built in.

300K

$49

300K words / mo

1M

$129

1M words / mo

2M

$229

2M words / mo

5M

$479

5M words / mo

12M

$899

12M words / mo

25M

$1,699

25M words / mo

Need enterprise pricing?

Talk to us about higher-volume workloads and enterprise deployment requirements.

AI Humanizer API. Common questions.

Documented answers about the endpoint, response, limits, billing, and production use.

What does the Humanizer API return?

A synchronous response returns the humanized result, execution time, input word count, remaining credits, status, and service details.

Does the endpoint support asynchronous processing?

Yes. Use a callback URL for webhooks, set poll to true for polling, or use both. The response includes a task ID for asynchronous jobs.

How do I verify a webhook?

Provide a webhook secret in the request. Walter sends it back in the X-Webhook-Secret header of the webhook POST.

What is the synchronous rate limit?

The public documentation lists 3 synchronous requests per minute per user. Limits can vary by plan.

How do I authenticate?

Send an API key with the humanizer scope in the X-API-Key header.

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