| Core question answered | Is this claim true? Every claim gets a 0-100 credibility score with linked evidence | Was this text written by an AI model? Likelihood scored at document, paragraph, and sentence level |
| Accepts video and audio | Yes — paste a YouTube/TikTok/Instagram Reel/podcast link and it transcribes first | No — text only: paste directly, or upload .txt, .docx, or text-based .pdf |
| Fact-checks against live web sources | Yes — each claim is cross-referenced against live sources with the evidence linked | No — ZeroGPT analyzes linguistic signals for AI authorship; it does not verify factual accuracy |
| AI-generated content detection | Deepfake and AI-generated media signals in video and audio only | Purpose-built AI text detector with sentence-level highlighting, multilingual |
| Writing toolkit (paraphrase, summarize, plagiarism, grammar) | None — BSmeter only analyzes, it doesn't help you write | Full suite: plagiarism checker, paraphraser, summarizer, grammar checker, translator |
| Free access | Free tier for claim checks; Basic $3.99/mo, Premium $8.99/mo | Free AI detection with a generous per-check character allowance and no account required; paid tiers raise limits and remove ads |