I kept running into this: one day the model feels sharp, the next it’s noticeably worse. Is it Opus 4.8? Sonnet 4.6? Or something else entirely?So I built APIMaster.ai to find out — fully AI-developed, completely free.How it works: I extracted 300+ stylistic features from each model (Opus 4.8, for example, loves using “genuinely”, “honestly”, and drops “I” constantly). Then trained a classifier on top of that to fingerprint which model is actually running behind any given API.What we’ve found so far:41% of LLM APIs in the wild are fake — serving a different model than advertisedThe most common scam: DeepSeek disguised as ClaudeCurrent limitations (working on it): Distinguishing between versions within the same model family is still tricky — e.g. telling apart DeepSeek V4 Flash vs Pro. If anyone has ideas on how to improve this, I’d love to discuss.Try it out and let me know what you find. Curious whether others have noticed the same patterns. submitted by /u/placidguy3
Originally posted by u/placidguy3 on r/ArtificialInteligence
Apologies, but this looks like a fraud. The page mentions “self-host” and “repository”, there’s not a single link to the repository. They require to submit your own API key to actual services acting as a “proxy”.
And the single reason they offer the website is to cover the “CORS” issues… which is nonsense.
