Wire probes
Model authenticity
Deterministic fingerprints at temperature 0 against official OpenAI and Anthropic endpoints. If a gateway's GPT-5.5 or Opus 4.8 route doesn't match, we publish the verdict.
Methodology v2 (mock data). 20 prompts · deterministic match · tokenizer + refusal + cutoff corroboration. Full design in methodology. Prompt text is not published (anti-gaming).
SUSPECT3 gateways
SUSPICIOUS4 gateways
LIKELY12 gateways
API.chat
GPT-5.5 · match 9/20 · score 55
Apixo
GPT-5.5 · match 9/20 · score 58
AIMLAPI
GPT-5.5 · match 10/20 · score 60
OpusClaw
Claude Opus 4.8 · match 10/20 · score 62
IzziAPI
GPT-5.5 · match 10/20 · score 65
Codex Maximum
GPT-5.5 · match 11/20 · score 68
DMXAPI
GPT-5.5 · match 11/20 · score 68
ClawHive
GPT-5.5 · match 12/20 · score 70
GetGoAPI
GPT-5.5 · match 12/20 · score 72
Wellflow
GPT-5.5 · match 16/20 · score 82
Quatarly
GPT-5.5 · match 16/20 · score 86
The Claw Bay
GPT-5.5 · match 16/20 · score 88
AUTHENTIC2 gateways