KillSwitch
a programming language designed to be difficult for LLMs
Details
- External ID
- 49769531
- Source
- HN
- Company
- —
- Product
- KillSwitch
- Website domain
- killswitch-lang.org
- Launched
- Sept. 19, 2026
- Cohort
- —
- Upvotes
- 10
- Upvotes percentile
- 0.5853269537480064
- Tags
- —
- Fetched at
- Sept. 23, 2026, 5:02 p.m.
- Updated at
- Sept. 23, 2026, 5:02 p.m.
Enrichment
- Theme
- decision model runtimes and tools
- Vertical
- Horizontal
- Function
- Dev tools
- Audience
- Developer
- AI stance
- Not AI
- Project type
- Hobby / open-source project
- Normalized one-liner
- programming language designed to resist llm generation
- Manually corrected
- False
Could you build this?
Partial While an interpreter or compiler for an esoteric language is straightforward to vibe-code, designing a genuinely novel language grammar and semantics that consistently defeat LLM reasoning requires specialized programming language theory and adversarial benchmark research.
What it would actually take: The architecture comprises a custom language grammar, parser (e.g., in Rust or Python using Lark/tree-sitter), and stack/state-machine runtime. The difficult part is the formal language design: inventing non-standard evaluation orders, context-sensitive grammar quirks, or semantic traps specifically tuned to exploit LLM tokenization and transformer attention limitations, verified through extensive benchmarking suites against modern frontier models.
Discussion
2 comments analyzed.
Competitors
Other products that read as similar to this one — 1183 launches clear the similarity bar, closest 8 shown.
Attention rank: #493 of 1184 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 324 days after the earliest competitor.
- B-IR · hn · 2026-01-12 · 62 upvotes · similarity 0.69
- Tokensift, an open-sourced token-efficiency linter for LLM prompts · hn · 2026-08-29 · 6 upvotes · similarity 0.66
- probably · github · 2026-09-19 · 11 upvotes · similarity 0.65
- jevals · hn · 2026-09-20 · 47 upvotes · similarity 0.64
- Crespo · hn · 2026-06-22 · 14 upvotes · similarity 0.64
- rizzo-flow · github · 2026-09-21 · 455 upvotes · similarity 0.63
- litjev · github · 2026-09-17 · 36 upvotes · similarity 0.63
- jevify · github · 2026-09-19 · 35 upvotes · similarity 0.61
Other launches for this product
- No other launches for this product.
Same idea, different domain
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