Scan to join WeChat groupAPI Usage Audit
Use controlled samples to inspect cache usage, hidden input overhead, context integrity, and reasoning-effort behavior.
Never runs inside the free authenticity check
The key is used only for this request and is not written to an audit record
A cache signal is not a billing-fraud verdict without the relay invoice
Anthropic sends up to 6 samples and OpenAI sends up to 4. Sampling stops early on an upstream error. Each sample includes the same 24,000-character prefix and up to 8 output tokens.
Audit setup
Configure one model endpoint
Audit evidence
Usage samples will appear here after the repeated requests finish
What this result does not prove
This page verifies whether provider-style usage fields expose cache creation or reads. It cannot prove the relay passed a discount to you until its invoice, balance change, or billing export is compared against these samples.