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I tested RTK and Headroom, the two most-starred token-saving tools, on GPT-6 Astra: 5 coding tasks, 4 setups, 3 runs each, every run priced

This story is from 2026-09-09. It is preserved in the archive; the latest stories are on the live feed.

RTK and Headroom are the two most-starred open-source "cut your token bill" repos on GitHub, and Astra is the model everyone is watching the bill on. I measured them instead of trusting the READMEs. Setup: 5 small coding questions in a Rust repo, GPT-6 Astra with a bash tool, each run under four se…

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  1. 2026-09-09 14:16 · r/OpenAI
    I tested RTK and Headroom, the two most-starred token-saving tools, on GPT-6 Astra: 5 coding tasks, 4 setups, 3 runs each, every run priced

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