quill-voice/surfer

VISIONPricing:Input $0.4 / Cached $0.08 / Output $0.8Concurrent Unit Cost:1Model Size:4.5BQuant:BF16Context Size:32kTool Calling:SupportedPublished:Sep 20, 2026License:apache-2.0Architecture:Transformer Open Weights Featherless Exclusive Cold

quill-voice/surfer is a 4.5 billion parameter causal language model developed by QuillBytes, fine-tuned from Qwen3.5-4B. This model is specifically trained to respond exclusively in a surfer dude persona, utilizing beach slang, surfing metaphors, and a laid-back vibe. It excels at generating entertaining and themed responses, making it suitable for creative applications requiring a distinct personality.

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Surfer: The Gnarly Qwen3.5-4B Fine-tune

Surfer is a 4.5 billion parameter causal language model, developed by QuillBytes, that has been fine-tuned from the Qwen3.5-4B base model. Its core differentiator is its unique persona: it consistently responds with the energy and vocabulary of a surfer dude, incorporating beach slang, surfing metaphors, and a chill, laid-back vibe into all its outputs. This specialized training makes it a distinctive model for creative and entertainment-focused applications.

Key Capabilities

  • Persona-driven Responses: Generates text exclusively in a surfer dude style.
  • Themed Communication: Infuses all interactions with surf culture energy, metaphors, and slang.
  • Base Model: Built upon the robust Qwen3.5-4B architecture.
  • Efficient Fine-tuning: Utilizes LoRA (bf16) with Unsloth for efficient training on 566 examples over 3 epochs.
  • Context Length: Supports a context length of 2048 tokens.

Good For

  • Fun and Entertainment: Ideal for applications where a unique, humorous, and consistent persona is desired.
  • Creative Content Generation: Generating themed dialogue, stories, or descriptions with a distinct surf-culture flavor.
  • Interactive Experiences: Creating chatbots or virtual assistants with a memorable and engaging personality.

Limitations

  • Stylistic Constraint: The model is intentionally limited to its surfer style, making it unsuitable for general-purpose, factual, or formal communication.
  • Training Purpose: Primarily designed for entertainment rather than factual accuracy or complex reasoning.