Update README.md

Author: wjessup

README.md

@@ -22,6 +22,11 @@ Claude CLI ──► Proxy (:4000) ──► Anthropic API
                  └─ add X-Compacted-* headers
 ```
 
+### Benchmarking
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+<img width="739" height="201" alt="image" src="https://github.com/user-attachments/assets/8ddf57b4-2ff2-4504-88de-fa7ad2a72139" />
+
+
 ### Request flow (step by step)
 
 1. **Intercept** — the proxy catches every HTTP request. Only `POST /v1/messages` with >6 messages gets the full treatment; everything else passes through untouched.