@vikingmute: Found that Ponytail and Codex are a perfect match https://github.com/DietrichGebert/ponytail… GPT is addicted to writing fallback code; without clear instructions, it always writes a ton of defensive code, which is heartbreaking to read. Its core philosophy is “The…
Summary
Ponytail is an AI agent skill that significantly reduces over-engineering by forcing the agent to first check whether new code is needed, claiming to reduce code volume by 80-94% and cost by 42-75%. The author recommends using it with Codex and has open-sourced it on GitHub.
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Ponytail
He says nothing. He writes one line. It works.
80-94% less code · 3-6× faster · 42-75% cheaper Per-task code, latency, and cost on the Claude API, not your plan’s quota. Median across Haiku, Sonnet, and Opus (10 runs for code and latency, 30 for the re-verified cost). Results vary by model and prompt: the ruleset re-injects each turn, so on a short prompt or a terse reasoning model that overhead can outweigh the savings. Reproduce it yourself.
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This article introduces a GitHub project named ponytail, which acts as a plugin for Codex, forcing the AI to assess whether code truly needs to be written before coding, thereby reducing 90% of useless code, lowering token consumption, and improving code quality.
DietrichGebert/ponytail
Ponytail is a developer tool that integrates with AI agents to significantly reduce code output, cost, and execution time while maintaining safety, as demonstrated in benchmarks with Claude Code.
@0xQiYan: Guys, listen up. Fable 5 is the strongest code model, and the most expensive. Every extra line it writes, you pay extra. Ponytail, turn your AI into a veteran slacker. Before writing code, ask yourself: → Is this necessary? → Is it already in the codebase? → Can the standard library handle it? → Can the browser do it itself?…
Fable 5 is currently the strongest code model, free and open-source, reducing code volume by 94%, lowering bills by 20%, and increasing speed by 27%. Paired with the Ponytail tool, it guides developers to write the leanest code.
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@trending_repos: Trending repository of the day ponytail Makes your AI agent think like the laziest senior dev in the room. The best cod…
Ponytail is an open-source agent skill that makes AI coding agents write minimal, efficient code — claiming ~54% less code, ~20% cost savings and ~27% faster output on real Claude Code sessions — trending as the repository of the day with 151k stars.