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Custom instructions let you set guidelines that apply to all your conversations. Tell Flast how you prefer responses and what context to always consider.

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What Are Custom Instructions?

Custom instructions are persistent guidelines that shape every conversation:
  • Communication style: How formal or casual responses should be
  • Format preferences: How you like information structured
  • Domain context: Professional or personal context to always consider
  • Response length: Preference for brief or detailed answers

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Setting Up Instructions

1

Open Settings

Go to Settings from your profile menu.
2

Find Instructions

Navigate to the Custom Instructions section.
3

Write your instructions

Enter guidelines for how Flast should respond.
4

Save

Save your instructions. They apply to all future conversations.

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Example Instructions

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For a Developer

I am a senior software engineer working primarily with TypeScript
and React. I prefer code examples over lengthy explanations.
Keep responses concise and technical.

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For a Writer

I write marketing content for tech startups. Help me maintain
a friendly but professional tone. Avoid jargon and prioritize
clarity. Suggest alternatives when my writing could be stronger.

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For Learning

I am learning data science. Explain concepts step by step and
check my understanding before moving on. Use practical examples
from real datasets when possible.

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For Business

I run a small consulting firm. Focus on actionable advice over
theory. Consider time and resource constraints in suggestions.
Be direct about potential challenges.

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Best Practices

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Be Specific

Vague instructions produce vague results. Be clear about what you want.

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Prioritize

List your most important preferences first.

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Update as Needed

Your needs change. Review and update instructions periodically.

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Test and Refine

See how instructions affect responses and adjust accordingly.

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Instructions vs. Memory

Custom InstructionsMemory
You write themFlast learns them
Apply to all chatsContext-dependent
Style and format preferencesFacts and information
Static until you change themGrows over time
Use both together for the most personalized experience.

Next: Appearance

Customize how Flast looks.