Airno

What Airno is

Airno estimates whether text or images may have been generated by AI, returning an overall confidence score and a breakdown for each detector. Its web interface accepts text up to 50,000 characters and marks spans it considers suspicious. Airno describes a seven-detector approach combining statistical analysis, RoBERTa and DeBERTa classifiers, and linguistic pattern rules. It says its text checks cover systems including ChatGPT, Claude, Gemini, LLaMA, and Mistral; image checks cover DALL-E, Midjourney, and Stable Diffusion, using CNN artifact analysis and frequency-domain inspection. The service also supports paraphrase detection and offers API access through REST requests authenticated with an API key in the X-API-Key header. Airno reports approximately 85–92% accuracy on unedited AI text samples of at least 200 words and an 8–15% false positive rate. It recommends at least 50 words for meaningful analysis and cautions that very short text produces less reliable results. According to Airno, submitted text and images are processed in memory and discarded after analysis, though anonymous aggregate analysis counts may be retained. The free plan costs nothing and allows 100 API requests per calendar month, resetting on the first day. Pro costs $19 a month and includes unlimited API requests, priority support, and a 99.9% monthly uptime SLA.

Who it suits

Airno suits people who want to check written content or images for signs of AI generation, including through an API. Its free plan may fit occasional use, while Pro is for users who need unlimited API requests and priority support.

Limits

The Free plan allows 100 API requests per calendar month, with the count resetting on the first day of each month. It includes text and image detection and community support.

Getting started

1. Open the Airno website or use its API.
2. For API access, authenticate with an API key in the X-API-Key header.
3. Choose the Free plan or Pro at $19 a month.
4. Submit text or an image for analysis; the web interface accepts up to 50,000 characters of text.

Verdict

Choose Airno if you need text and image checks, a detector breakdown, or REST API access, with a free plan available. Consider the reported false positive rate and short-text reliability caveat when interpreting results; Pro costs $19 a month for unlimited API requests.