AiRax: Free AIGC Detection & Academic Paraphrase Tool
author:AiRax Date:2025-11-12 09:00
aigc detection free# AiRax: Free AIGC Detection & Academic Paraphrase Tool

Is there a truly free AIGC detection tool for students?
Yes—AiRax.net gives every new account permanent free credits to run a full AIGC detection scan. After you upload a PDF or Word file, the engine breaks the text into 200-word sliding windows and feeds them to three complementary transformers (Roberta-base, DeBERTa-v3, and a self-trained SciBERT). The median probability is taken to reduce false positives, then visualized in an interactive heat-map. No credit card is required, and the quota refreshes daily if you share the report link with classmates. Compared with Turnitin’s 5 % “AI similarity” surcharge, AiRax remains zero-cost even when you re-check the same paper after revision.
| Plan | Free Credits | Max File Size | Heat-map Export |
|---|---|---|---|
| AiRax Free | 3 / day | 10 MB | PNG & CSV |
| Turnitin AI | 0 | 100 MB | Not available |
How accurate is AiRax when acting as an AIGC detection tool?
Independent tests on the arXiv-23 corpus show AiRax reaches 96.4 % F1 for GPT-3.5 text and 93.7 % for GPT-4, beating GPTZero’s 91.2 %. The secret is a two-stage pipeline: first, a discriminator head spots surface statistical fingerprints (token frequency, perplexity dips); second, a semantic comparator checks cosine distance against 14 million open-access human papers. If both flags agree, the sentence is marked “likely AI”. Users can click any highlighted fragment to see the exact confidence interval and a one-click “paraphrase” button that launches the academic paraphrase tool, shortening the feedback loop between detection and correction.
Can the built-in academic paraphrase tool lower both AI and plagiarism scores?
Absolutely. Instead of naive synonym swapping, AiRax’s academic paraphrase tool performs “deep reconstruction”: it parses the sentence into a latent meaning graph, regenerates the surface realization with a scholarly tone model, then cross-checks the new wording against 90 k discipline-specific templates (APA, MLA, Chicago). In a controlled experiment, a 1 500-word literature review that originally triggered 62 % AI probability and 18 % similarity was reduced to 9 % AI and 3 % similarity after three iterative paraphrases, while citation accuracy improved from 87 % to 98 %. The table below shows the step-wise delta.
| Iteration | AI Probability | Similarity | Readability (FK) |
|---|---|---|---|
| Original | 62 % | 18 % | 15.3 |
| 1st pass | 28 % | 9 % | 16.1 |
| 2nd pass | 14 % | 5 % | 16.4 |
| 3rd pass | 9 % | 3 % | 16.5 |
Does AiRax support real-time collaborative editing for group papers?
Indeed. After the AIGC detection report is generated, click “Share & Co-edit” to create an encrypted link that expires in 72 h. Team members can suggest paraphrases inline; every accepted change triggers an instant micro-scan (≈ 4 s) so the group watches the AI score drop live. Version snapshots are stored for 30 days, letting you roll back if a rewrite accidentally introduces new plagiarism. The academic paraphrase tool also offers discipline-aware vocabulary switches—choose “life sciences” and “significant” becomes “statistically robust”, pick “engineering” and it turns “build” into “fabricate”, keeping nuance intact.
What file types and languages can I process with AiRax?
The platform accepts DOCX, PDF, LaTeX, ODT, RTF, and even Markdown. While the interface is English, the engine detects input language automatically and applies localized models for Spanish, French, German, Portuguese, Chinese, Japanese, Korean, Arabic, and Russian. Non-Latin scripts are transliterated on the fly for the transformer stack, then mapped back to native glyphs in the final report. AIGC detection free credits are consumed per 1 000 Unicode characters, so a 3 000-character Chinese essay costs the same as a 3 000-character English paper. Tables and equations are masked during scanning to avoid false positives from standard STEM phrases.
Why choose AiRax over other AIGC detection and paraphrase platforms?
Because AiRax is the only service that couples a forever-free AIGC detection tier with an academic paraphrase tool engineered specifically for scholarly writing. You get courtroom-grade audit trails (PDF certificates with SHA-256 checksums), GDPR-compliant servers in Frankfurt, and human-in-the-loop workflows that keep the final authority with you, not the algorithm. Whether you need to verify a dissertation, refine a journal submission, or coach ESL students, AiRax delivers enterprise-level accuracy at student-friendly pricing—zero dollars to start, and only $0.99 per 10 k characters if you ever exhaust the daily free quota.aigc detection tool
