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Where innovation meets progress

Pygmalion‑2‑13B

Pygmalion‑2‑13B

Creative Instruction Model Built for Roleplay & Story

What is Pygmalion‑2‑13B?

Pygmalion‑2‑13B (originally “Metharme”) is an open-weight 13 billion‑parameter language model based on Meta’s LLaMA‑2 13B, fine‑tuned for fiction writing, role-playing, and multi-turn conversation using supervised instruction and creative dialogue data (Hugging Face, PromptLayer).

It supports both commercial and non-commercial deployment under the LLaMA‑2 license, offering broad applicability in creative dialogue applications (PromptLayer).

Key Features of Pygmalion‑2‑13B

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LLaMA‑2 13B Base Model

  • Robust dense transformer architecture delivering fluent and expressive conversation.

Fiction & Roleplay Tuning

  • Fine-tuned on a mix of instruction data, roleplay forums, synthetic conversations, and creative writing datasets like PIPPA and OpenOrca (Hugging Face, PromptLayer).

Usage of System/User/Model Tokens

  • Structured prompting with <|system|>, <|user|>, <|model|> tokens for multi-turn dialogue and persona-driven behavior (Hugging Face, Hugging Face).

Commercial-Friendly Open License

  • Allowed for commercial use under LLaMA‑2 policy, full weight access, and modifiable (Reddit, Hugging Face).

Creative Content Warning

  • Not trained for safe content, may produce explicit or inaccurate outputs; best suited for storytelling or roleplay usage, not safety-critical tasks (Hugging Face).

Use Cases of Pygmalion‑2‑13B

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Interactive Fiction & Roleplay Bots

  • Ideal for building AI-driven storytelling, RPG NPC dialogue, or character emulation systems.

Creative Writing Assistance

  • Use for narrative generation, world-building, or character dialogue loops with expressive style.

Chat & Persona-Based Agents

  • Design agents with consistent personalities, tone, or behavior using role-specific prompt tokens.

Commercial Chat Experiences

  • Deploy conversational systems, provided outputs remain in creative domains, per license scope.

Instruction-Tuned Dialogue Testing

  • Experiment with conversational instruction formats in open, modifiable setups.

Pygmalion‑2‑13B

vs

Other LLMs

Feature Vicuna‑13B Alpaca‑13B Pygmalion‑2‑13B
Base Architecture LLaMA‑13B LLaMA‑13B LLaMA‑2 13B
Specialization Multi‑turn chat Instruction tuning Fiction & roleplay dialogue
Instruction Capability Moderate Moderate Mixed instruction + creative
Commercial License No
(non‑commercial)
No ✅ Yes
Best Use Case Conversational AI labs Research/instruction Creative storytelling & RP

The Future

Open Storytelling, All Yours

If you're building a character-driven chatbot, roleplay engine, or creative simulator with open licensing and expressive output, Pygmalion‑2‑13B is an excellent choice, rich in personality, flexible prompts, and freedom to iterate.

Get Started with Pygmalion‑2‑13B

Looking to build immersive, persona-rich AI chats with open licensing? Contact Zignuts to integrate, evaluate, or fine-tune Pygmalion‑2‑13B in your workflows—ideal for roleplay, fiction, and interactive storytelling.

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