Claude: System Prompts
See updates to the core system prompts on [claude.ai](https://claude.ai) and the [Claude iOS app](https://anthropic.com/ios) and [Claude Android app](https://anthropic.com/android). Claude's web interface ( claude.ai ) and mobile apps use a system prompt to provide up-to-date information, such as the current date, to Claude at the start of every conversation. The system prompt also encourages certain behaviors, such as always providing code snippets in Markdown.
This prompt is periodically updated to improve Claude's responses. These system prompt updates do not apply to the Claude API. Where a model has multiple dated entries below, updates between versions are bolded.
Starting with the Claude 4.6 generation, each model ID is a single fixed snapshot , so those models have one entry.
⚡ Effects Interpreter
🌍World Economy
- ▶Global supply chains might feel a small tremor as businesses adjust.
- ▶Investors abroad often reprice their bets when a story like this lands.
🏙️Local Economy
- ▶Jobs and trade close to home might feel a soft knock-on effect.
- ▶The high street usually mirrors big-picture shifts, just a little later.
🏦Rates & Banks
- ▶Your loan or mortgage rate is more likely to drift than to lurch here.
- ▶Banks tend to wait and see before nudging the rates they offer.
❤️Health
- ▶Day-to-day stress can creep up if this starts touching familiar routines.
- ▶Community wellbeing could dip a little while people wait for clarity.
💷Wealth
- ▶Any hit to your money is more likely a ripple than a wave.
- ▶Investors often reshuffle their holdings when stories like this break.
🏠Housing
- ▶House prices and rents are unlikely to shift the moment this news breaks.
- ▶The property market tends to move slowly, so expect any change to take time.