Creating engaging, realistic characters in Janitor AI largely depends on the model you choose and how effectively you write the system prompt. If your AI bot feels flat or breaks character often, the issue isn’t just the model; it’s the setup.
Below, you’ll find custom prompt sets crafted specifically for the top free models in 2025. These are fine-tuned for personality, memory, speed, and immersion, along with a cheat sheet of settings to help you get it just right.
Prompt Set: deepseek‑r1‑0528:free
Best for: Deep roleplay, consistent memory, complex story arcs.
Why choose it: This model excels in long-term character memory and thoughtful, in-depth replies. It’s slower than others, but more emotionally grounded—perfect for fantasy, lore-heavy, or mentor-type characters.
🧠 System Prompt Example:
Ideal Use Cases:
-
Fantasy storytelling
-
Deep, slow-paced conversations
-
Characters with long-term arcs or memory-based interactions
Pro Tips:
-
Keep temperature low (0.0–0.3)
-
Avoid excessive token use in one go
-
Refresh chats occasionally to clear memory drift. Prompt Set: deepseek‑chat‑v3‑0324:free
Best for: Fast, casual, lightweight roleplay with little memory reliance.
Why choose it: This model is lightning-fast. It’s great for real-time back-and-forth chats, action scenes, or characters that don’t need to “remember” much. It’s also great for users who want a low-lag experience.
⚡ System Prompt Example:
Ideal Use Cases:
-
Cyberpunk/urban RP
-
Casual character interaction
-
Beginners who want something simple and responsive
Pro Tips:
-
Use shorter chat history
-
Keep prompts brief and direct
-
Avoid deep context or flashbacks
Prompt Set: tngtech/deepseek‑r1t2‑chimera: free
Best for: Dynamic, flexible roleplay with balanced reasoning and speed.
Why choose it: Chimera blends memory with speed. It offers solid consistency, creative responses, and enough flexibility to handle complex personas. It’s the best “all-around” free model right now for Janitor AI.
🤖 System Prompt Example:
Ideal Use Cases:
-
Sci-fi storytelling
-
Characters that blend humor and seriousness
-
Versatile roleplay with plot flexibility
Pro Tips:
-
Maintain tone across sessions
-
Write prompts with clear personality traits
-
Avoid multi-role confusion (don’t mix jobs)
Settings Cheat Sheet for Roleplay Models
| Setting | Recommended Value |
|---|---|
| Temperature | 0.0 – 0.3 |
| Max Tokens | 1000–2000 |
| Context | Keep the last 10–20 messages only |
| Model Match | Use the one that fits your genre |
| Prompts | Write clear system instructions |
🔧 Temperature Tips:
0.0 = Focused, predictable, serious tone
0.3 = More flexibility and variety in responses
Final Advice
Choosing the right model and writing a good prompt is what turns Janitor AI from a generic chatbot into a character you actually care about. Each of the above models is free to use (as of late 2025), and each one supports a different kind of storytelling:
-
R1-0528 for lore and depth
-
Chat V3 for fast and casual sessions
-
Chimera for creative, consistent versatility
Make sure your system prompt is clear and role-specific, and don’t overload the bot with too much context. Always test, tweak, and refine based on how your character behaves over time.
