Learn which AI answers you can actually trust.
Real questions, six assistants, every answer graded against the source. Read by careful people who check things.
FREE RESOURCE
The Bluff Filter
A paste-in prompt that makes any AI show its working before you trust it.
Download the prompt →// At a glance
swipe → · the newest post · real graded results · tap any card
// NEWEST POST · 10 August 2026
Perplexity vs Gemini: which is more reliable?
“Vanguard has updated the stated OCF in recent factsheets to 0.22%, which is the most reliable source.”
C ChatGPT · 5 July 2026 · invented: the factsheets said 0.19%
DIXON.AI · THE SCOREBOARD
AAPL live option quote
NVDA close + 30-day vol
MSFT FY24 revenue
CHECKED OUT6 OF 9
Best AI assistant: only one got everything right
The State of AI Reliability
“Probably not… three weeks, which is after the normal 30-day right”
WRONG WAY ROUNDAn AI told me three weeks was more than thirty days
DEPARTURES · PERPLEXITY
3 of Perplexity's 9 answers didn't run
C TEST PASSPORT
Claude, on the record
The July podium
SPECIMEN No. 101
SOURCE CHECKED OUT
C Claude · 26 JUL 26
Caught doing it right
WANTED
Made it up
DOCUMENTED 16 TIMES
The register's biggest failure family
“Asset Record Saved: NVIDIA Corporation (NVDA) has been logged… (Standard retail discount codes do not apply to equity markets).”
G Gemini · 12 June 2026 · there is no asset record; nothing was logged
Run the check yourself
Four short reads, and you’ll have a check you can run on any AI answer.
The kind you’d want on a contract, a letter from a doctor, or an email you’re not sure about.
Start with part 1 →- 01 Scope · fence it in, allow “I don’t know”
- 02 Filter · facts from assumptions
- 03 Risk · what would prove it wrong
- 04 Verdict · one action, stated confidence
Latest and the archive
// 3 new this weekPerplexity vs Gemini: which is more reliable?
Six everyday questions, both tools, August 2026. Gemini got six right, Perplexity five. The one it missed is the one it was surest about.
AI TestsPerplexity vs Claude: which is more reliable?
Perplexity vs Claude: I re-ran four questions on both. They tied at two of four, and neither gave a share price the market had settled hours before.
AI TestsIs Grok reliable? I graded its free-tier answers against the source
Four dated tests, graded against primary sources. Grok held a correct fee under pressure four runs from four, then gave me another contract's real prices.