How AI Replies Work
When you click a tone button, GenX:- Reads the original tweet — understands what the person is saying
- Gathers context — checks the thread, author info, and conversation
- Applies your tone — crafts a reply matching your chosen style
- Enforces Twitter limits — keeps it under 280 characters
- Cleans up — removes hashtag spam, ensures natural formatting
Choosing Your LLM Provider
Different AI providers have different strengths:OpenRouter (Recommended)
- 200+ models through one API key
- Switch models without changing keys
- Best flexibility for experimentation
- Start with Claude Sonnet 4 for best quality
OpenAI
- GPT-4o Mini — fast and cheap
- GPT-4o — highest quality
- Most reliable uptime
Anthropic
- Claude models excel at tone matching
- Best at understanding nuance and context
- Great for brands that need careful messaging
Groq
- Fastest inference — replies in under 1 second
- Llama 3.3 70B — open model, great quality
- Free tier available — perfect for testing
- Gemini 2.5 Flash — excellent value
- Large context window
- Free tier for getting started
Custom Prompts
The Custom tone option lets you give specific instructions: Examples:“Reply as if you’re a helpful SEO consultant. Mention that we offer free audits.”
“Be casual and use Gen-Z language. Keep it under 200 characters.”
“Ask them a follow-up question about their experience.”
“Compliment their insight and share a related tip from our blog.”Custom prompts are powerful for maintaining a consistent brand voice across all replies.
Reply Quality Tips
Be Specific
Reference something specific from the original tweet. Generic replies get ignored.
Add Value
Don’t just agree — add a new perspective, a tip, or a resource.
Stay Short
Twitter rewards concise replies. Aim for 140-200 characters, not the full 280.
Match Energy
If the original tweet is casual, your reply should be too. Don’t be overly formal in a meme thread.