Show HN: Slash-tokens – know LLM cost before the call leaves your machine

Show HN: Slash-tokens – know LLM cost before the call leaves your machine(github.com)

4 points by wolfejam 14 days ago | 5 comments

I kept finding out what a call cost after I had already paid, so I built /Slash -- slash-tokens is a 4.8KB WASM that estimates tokens FAST and can block a wasted trip, or switch to cheaper same-provider model before the request leaves your machine. Try it MIT, no account needed: bunx slash-tokens

Or install the SDK: npm install slash-tokens

brownbear7 10 days ago |

How do you handle cached input or long-context pricing? Some providers change the rate a lot depending on that, so I’m curious how accurate the estimate stays.

chrism238 14 days ago |

Move over Halting Problem!

wolfejam 13 days ago | |

we don't claim 100% -- we optimize, we don't offer perfect computation! The bill is after the call, it's a local estimate, so you can skip a wasted trip or use a cheaper model, same provider.

ramon156 14 days ago |

good thing you replaced emdashes with double dashes, i almost thought this was AI generated /s

wolfejam 14 days ago | |

haha! they were on typewriters long before models!