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Powered by APIMaster.AI exclusive LLM fingerprinting
True fingerprinting · Verify before you trust
Total Detections
0
Fake Model Rate
0%
Tested API URLs
0
Most Detected
—
Миттєво перевіряйте ключі API OpenAI, Claude, Gemini та DeepSeek. Перевіряйте з’єднання, дійсність ключа й справжність моделі — безкоштовні інструменти.
Купуйте ключі API OpenAI, Claude, Gemini та DeepSeek в один клік — економія до 90%. Перевірені відбитки та найкращі канали в одному місці.
Three steps to detect fake LLM models and verify API authenticity
We collect large volumes of model responses using hundreds of prompts and noise patterns to build a fingerprint database — the foundation for identifying fake or substituted models.
Based on behavior rather than self-reported identity, we extract fingerprint features from responses — like human fingerprints, these cannot be faked by relay proxies.
Probe questions verify whether you're getting the real Claude, GPT, or DeepSeek — or a cheaper fake substitute quietly swapped in by the API provider.
Shop fingerprint-verified providers. No model substitution, no fake APIs. OpenAI, Claude, DeepSeek and more — all checked before listing.
Many API proxies secretly swap expensive models for cheaper ones — you pay for Claude or GPT-4 but get a discount model in return. APIMaster.AI detects this through genuine LLM behavioral fingerprinting: trained on massive samples, it identifies the real model behind any API endpoint — not by asking questions the proxy can fake, but by analyzing deep behavioral signals that cannot be spoofed.