Serious token saving (works with both Codex and Claude)

Have any of you tried Headroom AI in combination with RTK (Rust Token Killer). You can save serious token usage on both Claude and Codex.

Here is a screenshot of my savings for my last hour of constantly running Codex:

3.7 million tokens saved, and $20.42 dollars saved. My usage counter hardly moves now.

The trick is to install RTK (Rust Token Killer) together with Headroom AI.

RTK filters out shell-command output before it enters you context, and Headroom AI compresses your prompts with zero accuracy loss in your responses.

Was wondering if anyone else have tried these tools, or any other token saving tools for that matter?