B Evidence Grade B Graded accuracy verified by the review judge Safe to Cite Recent

40%

40% -- ai hallucination rate for conventional prompt-only chatbots (2025)

Name: AI Hallucination Rate Statistics
Creator: Lighthouse Intelligence
Published: 2026-09-24

2025 · JMIR Cancer

Conventional prompt-only chatbots hallucinated approximately 40% of the time.

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Attribution: JMIR Cancer View source

Lighthouse Research Team

Last verified: 2026-09-24 · How we verify data →

Source verified Evidence graded

Value

40%

Unit

Percentage

Data Vintage

2025

Entity

conventional prompt-only chatbots

Evidence Quality

Strong, reliable evidence

Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.

61/100 confidence

Single source - not yet corroborated

Score breakdown

Extraction

Source Trust

Citation Chain

Independence

Methodology

Freshness

Source

JMIR Cancer Primary Tier A

https://rankenstein.pro/blog/prompt-based-vs-crawl-based-ai-for-seo ↗

Confidence: 59/100 Vintage: 2025 Channel: Deep Crawl

Source Article

Prompt-Based vs Crawl-Based AI for SEO: What the Data Shows

Prompt-Based vs Crawl-Based AI for SEO: What the Data Shows RAG cuts AI hallucinations from 40% to under 6% (JMIR Cancer, 2025). What Cloudflare and Chroma research shows about prompt-based vs crawl-based AI for SEO. TL;DR: RAG reduces AI hallucination rates from 40% to under 6% (JMIR Cancer, 2025).…

Original Research

JMIR Cancer · Original study ↗

Methodology

JMIR Cancer peer-reviewed study of chatbot configurations

Methodology documented

Segmentation

Industrymarketing

Cite this stat

Plain Text

conventional prompt-only chatbots: 40% ai hallucination rate. Source: JMIR Cancer (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/rag-hallucination-reduction-2025

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<blockquote cite="https://lighthousedata.io/data/rag-hallucination-reduction-2025" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>40%</strong> -- ai hallucination rate for conventional prompt-only chatbots<br><small>Source: JMIR Cancer (2025) · <a href="https://lighthousedata.io/data/rag-hallucination-reduction-2025" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>

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