AI detectors with an API

2.Why each card is in this view

1. AIDI-D-0005Winston AI

   docs published; API users "register for free and receive 2,500 credits" (gowinston.ai/pricing, read 8 November 2026).

2. AIDI-D-0006Pangram

   docs published; 5 QPS realtime, text at $0.05 per 100 words with a 20% bulk discount, and $10 in monthly API credits inside the $20 / month Individual plan (pangram.com, pricing, read 8 November 2026).

3. AIDI-D-0001GPTZero

   docs published; the FAQ states that API documents are not stored while dashboard inputs are (FAQ, read 8 November 2026).

4. AIDI-D-0003Copyleaks

   docs with a Python SDK; the API page states that submitted content is not stored, shared or used to train public AI models (API page, read 8 November 2026).

5. AIDI-D-0012Phrasly

   the Business API takes 50 words to 15,000 characters per request and bills $0.02 per 1,000 words scanned inside a $100/month plan (API docs, pricing, read 8 November 2026).

6. AIDI-D-0010Sapling

   up to 200,000 characters per request, results under 500 characters flagged low_confidence; from $0.005 per 1,000 characters with a $5 one-time minimum; new keys get 50,000 characters a day and 250,000 a month free (API docs, pricing, read 8 November 2026).

7. AIDI-D-0004Originality.ai

   docs published; API access sits on Enterprise at $136.58/month billed yearly, 1 credit per 100 words (pricing, read 8 November 2026).

8. AIDI-D-0011ZeroGPT

   pay-as-you-go API from $0.042 per 1,000 words on Beginner to $0.072 on VIP, with 50,000 to 500,000 characters per detection (pricing, read 8 November 2026).

9. AIDI-D-0014Proofademic

   docs published; 2,000 trial credits at 1 credit per word (pricing, read 8 November 2026).

10. AIDI-D-0015Walter Writes

    docs published; monthly API plans from 300K words at $49 to 25M at $1,699, most text endpoints at 1 credit per word (pricing, read 8 November 2026).

11. AIDI-D-0016Hive (now Deploy)

    docs published; text is processed in chunks of 2048 characters and every AI Detection pricing line reads Contact Sales (docs, deploy.com/pricing, read 8 November 2026).

12. AIDI-D-0017GLTR

    the README runs a local server that serves the interface and an API on port 5001 and lets a custom model be registered in the backend; free under the Apache License 2.0 (GitHub README, read 9 November 2026); the open-source view carries the repository, licence and last commit date beside the GPT-2 Output Detector's and SynthID Text's.

13. AIDI-D-0019GPT-2 Output Detector

    the model card documents loading the classifier through the transformers pipeline, and the GitHub README runs a local web UI; free under the MIT License, with the hosted demo paused (model card, detector README, read 9 November 2026).

14. AIDI-D-0020Codequiry

    API reference with create, upload, start and results endpoints; API and CLI access is listed on the Grow plan, metered at 20 web and AI checks a month (API docs, pricing, read 9 November 2026).

15. AIDI-D-0021WasItAI

    every plan includes API access, from 10 images a month free to 10,000 a month at $300 /month, and the browser extension needs an account with API access (API and pricing, read 9 November 2026).

16. AIDI-D-0022Reality Defender

    REST API and SDKs in five languages, with a free plan of 50 image scans a month and Business at $399 on annual billing for 1,000 scans; audio and video need a paid plan (API page, quickstart, read 9 November 2026).

17. AIDI-D-0024Undetectable AI

    docs published; under 30,000 words per request with 200 words recommended, returning a 1 to 100 score and approximate scores for eight third-party detectors (help.undetectable.ai, read 9 November 2026).

18. AIDI-D-0025AI or Not

    docs published; text from 250 to 500,000 characters per request, the largest text ceiling in the index, and media deleted after inference (docs.aiornot.com, read 9 November 2026).

19. AIDI-D-0029Smodin

    docs published; one text per request with a required language code, billed at half the input word count, with API access listed on the Premium plan at $19.99 a month (docs.smodin.io, smodin.io/pricing, read 9 November 2026).

20. AIDI-D-0031Surfer

    docs published; the AI Detector endpoint is exposed to Peace of Mind ($299 a month billed yearly) and Enterprise customers only (docs.surferseo.com, surfer.ai/pricing, read 9 November 2026).

21. AIDI-D-0032Compilatio

    an API page for institutions covering plagiarism, AI and altered text detection, priced by demo request (compilatio.net, read 9 November 2026).

22. AIDI-D-0033Quetext

    docs published; $0.10 per 1,000 words analysed from a prepaid wallet with 5,000 free words, per-sentence probability and PDF export (quetext.com, read 9 November 2026).

23. AIDI-D-0034TruthScan

    docs published; text billed at 1 credit per word while the pricing page counts results in images and PDF pages, so no price per text word is published (truthscan.com, truthscan.com/pricing, read 9 November 2026).

24. AIDI-D-0036Sightengine

    docs published; one call can combine the genai model with deepfake and moderation models, from 2,000 free operations a month (sightengine.com, sightengine.com/pricing, read 9 November 2026).

25. AIDI-D-0037Deepware

    the FAQ states API and SDK forms by contact and the card records the field as available on that statement; no documentation page, price or limit is published, and the scanner host was unreachable on 9 November 2026 (deepware.ai, read 9 November 2026).

26. AIDI-D-0038Sensity

    docs published; REST API v2 with webhooks and an SDK, files up to 500 MB and media up to one hour, with new accounts held for manual review (docs.sensity.ai, read 9 November 2026).

27. AIDI-D-0039Codeleaks

    the Copyleaks API accepts code files and URLs, but the release notes record the AI code verdict's removal from the submit endpoints on 16 December 2025, so the API field states what the endpoints still return (copyleaks.com/codeleaks, read 9 November 2026).

28. AIDI-D-0040Illuminarty

    the pricing page states request quotas by plan and the home page says "Integrate automated AI detection into your service through our API"; no documentation page was found and api.illuminarty.ai answered with an empty page on 9 November 2026 (illuminarty.ai).

29. AIDI-D-0041Pindrop Pulse

    the Pulse Inspect launch release describes an API-driven batch platform with a simple interface; the field is recorded on that statement, with no public documentation, price or limit found (pindrop.com, read 9 November 2026).

30. AIDI-D-0042Resemble Detect

    docs published with Python, Node.js and JavaScript SDKs, batch and streaming endpoints and per-second pricing from prepaid credits on the Flex plan (docs.resemble.ai/detect, read 9 November 2026).

31. AIDI-D-0045GPTKit

    an OpenAPI-documented endpoint sold inside the Team and Institution plans (gptkit.ai/api-docs/v1, read 9 November 2026); 0 of 114 false positives in Orenstrakh 2023 and 4.5% accuracy on manipulated AI text in Perkins 2024.

32. AIDI-D-0046PlagiarismCheck

    the TraceGPT API returns percent, strong_percent and likely_percent with per-chunk positions (plagiarismcheck.org/for-developers, read 9 November 2026); rank 13 of 14 in Weber-Wulff 2023.

33. AIDI-D-0047Isgen

    the API is a RapidAPI listing with plans by contact (isgen.ai/pricing, read 9 November 2026); no study record.

34. AIDI-D-0048AI Detector Pro

    per-unit billing on top of the Unlimited plan (aidetector.pro/developers, read 10 November 2026); no study record.

35. AIDI-D-0049Fast-DetectGPT

    the API belongs to the hosted demo operator at fastdetect.net, not to the paper or the MIT-licensed repository (fastdetect.net, read 10 November 2026); RAID 2024 ran the method with the repository defaults.

36. AIDI-D-0051Detecting-AI.com

    a REST API, a Zapier app and a remote MCP server on one key, 100,000 words a month for $15 (detecting-ai.com/api-pricing, read 10 November 2026); no study record.

37. AIDI-D-0055Trinka

    docs published on a developer portal with an API overview page; pricing by contact (developer.trinka.ai, read 10 November 2026).

38. AIDI-D-0065Ircam Amplify

    docs published for a music detection API with signed webhooks and batch reports; access by application (docs.ircamamplify.io/api-docs, read 10 November 2026).

39. AIDI-D-0073Hiya Deepfake Detector

    docs published for the vendor's Audio Intelligence API, which serves the same AI Voice Detection the free extension runs; credits-metered with no public price (developer.hiya.com, read 10 November 2026). RADAR, added the same day, is not in this view: its model card calls the Hugging Face Space "our API service hosted on Huggingface Space", but a research demo's endpoint is not a product API (the Binoculars reading) and the line is quoted on the card instead (huggingface.co/TrustSafeAI/RADAR-Vicuna-7B, read 10 November 2026).

3.What the evidence says for API users

4.FAQ: AI detector APIs