A/B testing LLM silence with one system-prompt toggle
Details
- External ID
- 48594797
- Source
- HN
- Company
- —
- Product
- A/B testing LLM silence with one system-prompt toggle
- Website domain
- twitter.com
- Launched
- June 19, 2026
- Cohort
- —
- Upvotes
- 10
- Upvotes percentile
- 0.5935792349726776
- Tags
- —
- Fetched at
- Sept. 7, 2026, 9:26 p.m.
- Updated at
- Sept. 7, 2026, 9:26 p.m.
Enrichment
- Theme
- systems tools and desktop utilities
- Vertical
- Horizontal
- Function
- Observability & eval
- Audience
- Developer
- AI stance
- AI feature
- Project type
- Hobby / open-source project
- Normalized one-liner
- llm output testing framework
- Manually corrected
- False
Could you build this?
Yes This is a lightweight benchmarking script or web dashboard that executes prompts against LLM provider APIs with and without a system prompt and records the byte response length.
Discussion
No comments on this launch.
Competitors
Other products that read as similar to this one — 227 launches clear the similarity bar, closest 8 shown.
Attention rank: #77 of 228 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 232 days after the earliest competitor.
- Ctrlb-decompose: Strip the noise from logs before sending to LLMs · hn · 2026-09-09 · 14 upvotes · similarity 0.57
- ReasonGate- An explainable gate that blocks LLM prompt injection · hn · 2026-07-16 · 7 upvotes · similarity 0.53
- awdl-toggle · github · 2026-09-15 · 11 upvotes · similarity 0.48
- On-device Chrome extension that blocks credential leaks to LLM chats · hn · 2026-06-03 · 5 upvotes · similarity 0.45
- Replacing my OS process scheduler with an LLM · hn · 2025-12-30 · 77 upvotes · similarity 0.45
- Tired of duct-taping access control into agent prompts. Here's the fix · hn · 2026-06-03 · 22 upvotes · similarity 0.45
- I built a CLI that turns your codebase into clean LLM input · hn · 2026-04-24 · 10 upvotes · similarity 0.44
- Capto · hn · 2026-08-12 · 7 upvotes · similarity 0.44
Other launches for this product
- No other launches for this product.
Same idea, different domain
Nobody's really built a observability & eval tool for Media & entertainment yet.