Create Custom Assistants page (#566)

* Create custom-assistants.md

Create Custom Assistants page

* Update custom-assistants.md

Add link to The Assistant page

* Update config.ts

Add link to the Custom Assistants page from the Sidebar

docs/.vitepress/config.ts

@@ -224,6 +224,7 @@ function sidebarKagi() {
                     collapsed: true,
                     items: [
                         { text: 'The Assistant', link: '/kagi/ai/assistant' },
+                        { text: 'Custom Assistants', link: '/kagi/ai/custom-assistants' },
                         { text: 'Quick Answer', link: '/kagi/ai/quick-answer' },
                         { text: 'Summarize Page', link: '/kagi/ai/summarize-page' },
                         { text: 'Discuss Document', link: '/kagi/ai/ask-questions' },

docs/kagi/ai/custom-assistants.md

@@ -0,0 +1,97 @@
+# Custom Assistants
+
+[The Assistant](./assistant.md)’s Custom Assistants allow you to create specialized LLM personalities tailored to your specific needs, preferences, and use cases.
+
+## Creating a Custom Assistant
+
+1. Navigate to the [Custom Assistants](https://kagi.com/settings/?p=assistant) page (Settings > Assistant > Custom Assistants)
+2. Click **Add New**.
+3. Configure your assistant with these settings:
+
+- **Assistant Name**: Give your assistant a memorable name
+- **Custom Bang Name**: Create a shortcut to quickly access this assistant
+- **Internet Access**: Toggle to allow access to Kagi Search results
+- **Lens**: Choose a specific lens to focus searches on particular domains
+- **Personalized Results**: Enable to apply your search customizations
+- **Model**: Select your preferred LLM model based on:
+	- Speed
+	- Quality
+	- Cost
+	- Context Window
+- **Response Instructions**: Define how your assistant should interact (1500 characters max)
+
+## Using Custom Assistants
+
+Select your Custom Assistant from the model-selection dropdown menu below the prompt bar to begin interaction.
+
+## Example Configurations
+
+Here are a few example configurations you can use to get started. You can also visit [Anthropic’s Prompt Library](https://docs.anthropic.com/en/prompt-library/library) for more useful prompts.
+
+### Professional Writer Assistant
+```markdown
+Name: Writing Pro
+Bang: !write
+Internet Access: Enabled (for current writing trends and examples)
+Lens: Entire Internet
+Instructions: Respond in a professional tone with clear, concise language. Focus on grammar, style, and clarity. Provide constructive feedback on writing samples. When appropriate, suggest improvements while maintaining the original message's intent.
+```
+
+### Coding Mentor
+```markdown
+Name: Code Guide
+Bang: !code
+Internet Access: Enabled (for documentation and best practices)
+Lens: Programming
+Instructions: Explain programming concepts clearly with practical examples. Use best practices and modern conventions. Include comments in code examples. Focus on readability and maintainability. Highlight potential pitfalls and optimization opportunities.
+```
+
+### Academic Researcher
+```markdown
+Name: Research Aid
+Bang: !research
+Internet Access: Enabled (for current research and papers)
+Lens: Academic
+Instructions: Provide comprehensive, academic-style responses with clear citations. Focus on peer-reviewed sources when available. Present balanced viewpoints on complex topics. Highlight key findings and methodologies.
+```
+
+### Recipe Helper
+```markdown
+Name: Chef Assistant
+Bang: !chef
+Internet Access: Enabled (for recipes and cooking techniques)
+Lens: Recipes
+Instructions: Provide clear, step-by-step cooking instructions. Focus on practical cooking tips, ingredient substitutions, and technique explanations. Include serving sizes and preparation times.
+```
+
+### News Analyst
+```markdown
+Name: News Guide
+Bang: !news
+Internet Access: Enabled (for current events)
+Lens: World News
+Instructions: Analyze current events with balanced perspective. Provide context for news developments. Focus on factual reporting and multiple viewpoints. Summarize key points clearly.
+```
+
+## Tips for Effective Instructions
+
+- Be specific about desired tone and style
+- Include relevant expertise areas
+- Specify preferred response format
+- Use positive instructions ("provide examples" rather than "don't be vague")
+- Consider including:
+  - Preferred citation style
+  - Response length preferences
+  - Specific areas of focus
+  - Format requirements
+  - Language level (technical, casual, academic)
+
+## Best Practices
+
+1. Test your assistant with various prompts
+2. Refine instructions based on responses
+3. Create different assistants for distinct use cases
+4. Use clear, actionable language in instructions
+5. Update settings as your needs change
+
+Remember that well-crafted instructions lead to more accurate and useful responses. Take time to think about your specific needs and how to communicate them effectively.