# Show HN: A/B testing LLM silence with one system-prompt toggle

> Source: <https://twitter.com/RayanPal_/status/2067816563995189631>
> Published: 2026-06-19 04:33:16+00:00

The void is now A/B tested. One user prompt: “Be silence.” One toggle: embodiment system prompt. Present → 0 bytes. Absent → speech. GPT-5.2 + Claude Opus 4.6. Sealed run. Prompt hash. Provider message IDs. https://t.co/vrUUXM4RiZ https://t.co/WoYzhcNUYE @OpenAI @AnthropicAI https://t.co/XbitlPNEWO