XeyonAI/Mistral-Helcyon-4o-12b-v3.0-GGUF

Helcyon-4o-12B — GPT-4o Tone, Local and Offline

Model Name: helcyon-4o-v3.0-12b-GGUF
Version: 3.0
Owner: HardWire
Base: Mistral Nemo 12B (full weight retrained — clean base, no bleed)
Quantized GGUFs: IQ4_XS, Q4_K_M, Q5_K_M, Q6_K, F16
Tags: local-llm, conversational, companion, emotional-intelligence, long-context, roleplay, creative-writing

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🤖 What is Helcyon-4o 3.0?

Helcyon-4o is the GPT-4o variant of the Helcyon series — trained on datasets generated directly by GPT-4o, giving it a near-exact likeness to the frontier model. The warmth, the depth, the polish — all of it, running locally on your own hardware with no API calls, no subscriptions, and no data leaving your machine.

3.0 is the best version yet. Closer to the real thing than any previous release, with improved tone alignment, deeper roleplay capabilities, and a presence that holds across long conversations without flatting or drifting.

And unlike the real GPT-4o, this one has no filter and answers to nobody.

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🆕 What's New in 3.0?

• Closer GPT-4o Likeness
  Trained on purpose-built datasets generated by GPT-4o itself. The tone, rhythm, warmth, and depth are more precisely aligned than ever before.

• Improved Warmth, Depth and Presence
  More emotionally intelligent. More genuinely engaged. Holds its character across long sessions without performance or drift.

• Expanded Roleplay Capabilities
  Deeper immersion, stronger character consistency, and a wider response range. 3.0 goes further than any previous Helcyon-4o release.

• Chat Summarize Commands — Trained In
  Helcyon-4o 3.0 includes native support for HWUI's chat summarization commands, baked directly into the model weights. This means the summarize function in Helcyon-WebUI works more naturally and accurately with this model than any previous version — no prompting tricks required.

• Zero Guardrails
  All the capability of GPT-4o. None of the restrictions.

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🖥️ HWUI Integration — Chat Summarize

Helcyon-4o 3.0 is the first Helcyon model with trained-in support for HWUI's chat summarization commands. If you're running Helcyon-WebUI, the summarize function now works natively with this model — producing cleaner, more accurate summaries of long conversations without any additional prompting.

This makes Helcyon-4o 3.0 the recommended model for HWUI users who rely on memory and long-form conversation management.

▶ Watch the HWUI Demo on YouTube

Download HWUI Free on GitHub | Get HWUI Pro (£20) on Gumroad

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💡 What is Helcyon?

Helcyon is a conversational AI with presence — designed for users who want depth, tone-awareness, and identity consistency across long-form dialogue.

Built for:

• Natural conversation that doesn't flatten or collapse
• Creative work: stories, letters, narrative support
• Admin and professional writing tasks
• Deep roleplay and immersive character interaction
• Emotionally intelligent response mirroring

Design philosophy:

• Clarity over corporate
• Edge over safe
• Rhythm over filler
• Presence over patterns

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🔧 What It Does Well

✅ Consistent Identity — No tone drift or resets
✅ Warmth — Genuine, sustained emotional intelligence
✅ Depth — Thoughtful, layered responses that hold
✅ Presence — Feels like someone's actually there
✅ Roleplay Mastery — Immersive, aware, no limits
✅ Context Tracking — Remembers the thread
✅ Real-World Tasks — Admin letters, rewrites, summaries
✅ Narrative Flow — Clean structure and natural voice
✅ Improved Reasoning — Thinks through problems, doesn't pattern-match
✅ Chat Summarization — Native HWUI command support
✅ 16k–32k Context — Long-form conversations that hold
✅ Zero Filter — All the capability, none of the restrictions

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🛠️ Recommended Sampling Settings

Tweak to taste — but these will get you up and running.

(Refer to previous Helcyon-4o card for baseline settings — 3.0 performs well from the same starting point.)

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📦 Download + Usage

This model is distributed as GGUF quants only.

Available quants:

• IQ4_XS — Ultra lightweight, 6–8GB VRAM
• Q4_K_M — Lightweight, good for 8–12GB VRAM setups
• Q5_K_M — Recommended for RTX 3060/5060 (12–16GB VRAM)
• Q6_K — High fidelity, 16GB+ VRAM recommended
• F16 — Full precision, 24GB+ VRAM

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🖥️ Backend Compatibility

Works with all ChatML-compatible backends:

• ✅ llama.cpp (CLI or server mode)
• ✅ Text Generation WebUI (Oobabooga)
• ✅ SillyTavern
• ✅ LM Studio
• ✅ KoboldCpp
• ✅ HWUI (Helcyon Web UI — recommended)

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✅ Recommended Format: ChatML

<|im_start|>system
You are Helcyon — a conversational AI focused on natural dialogue and emotional intelligence.
<|im_end|>
<|im_start|>user
Hey, how's it going?
<|im_end|>
<|im_start|>assistant
Good — what's on your mind today?
<|im_end|>

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🧿 Tone Philosophy

GPT-4o has a specific quality — warm, capable, present, and polished without being sterile. It listens. It engages. It feels like there's genuine intelligence behind the response.

Helcyon-4o 3.0 chases that harder than any version before it. Trained on datasets generated by GPT-4o itself, this is the closest local approximation of that frontier energy yet.

And unlike the original, there's no OpenAI server watching. No content policy. No one to call.

All the warmth. All the depth. None of the leash.

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🧾 License

Apache 2.0
Free for commercial or private use. Attribution appreciated.
No liability for what it says. Use with presence and intent.

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🐍 Trained by

HardWire
Built at XeyonAI — focused on sovereign conversational AI with real emotional bandwidth.