Model reference · open weights

omnistep-12

Available as managed deployment LLMs sovthpaw · community Omni (any→any) · MoE 1 variants 580 dl/mo

omnistep-12 is an open-weight language model from sovthpaw. AxForge deploys and operates it for you on dedicated EU-owned hardware — with the licence handled where one is required.

Available as managed deployment — configured and operated for you on dedicated EU hardware, quoted per deployment.

What it is

Released bysovthpaw
TypeLanguage models
TaskOmni (any→any) · MoE
Parameters (lead)10.5B
Runs withtransformers
Based onsovthpaw/omnistep-12a3b
Released2026-06-04
Popularity580 downloads / month
LicenceOpen weights

About

What omnistep-12 is

A multimodal voice-and-music AI, born from generational Darwin family evolution. OmniStep 12A3B is a personal AI companion — a vibe coach that takes notes for you, keeps up the conversation, and plays background music that matches your mood. All the while it self-evolves to become a better assistant to you, via the Darwin Family weight-space recombination methodology (arXiv:2605.14386). Built as a paper-exact 2-parent merge of Qwen2.5-Omni-3B (multimodal) and ACE-Step v1.5 XL SFT 4B (text-to-music).

The text body of the model was produced by a paper-exact Darwin 2-parent weight-space recombination of the Qwen2.5-Omni thinker and the ACE-Step text encoder, with the Architecture Mapper's "skip on dim mismatch" behavior preserving the Omni text body intact across the Qwen2.5/Qwen3 cross-architecture boundary. The diffusion (music) head sits at F16 (unquantized) for maximum audio quality. The transformer (text/multimodal) head is shipped in 4 quantized GGUF deployments (F16, Q8_0, Q4_K_M, Q4_0) for llama.cpp users.

Read the full model card

The OmniStep Evolutionary Radio is the operational version of "infinitely generate its own background music" — a 4-loop pipeline (playback + queue fill + GEPA prompt evolution + Darwin weight evolution) wired up in the evolutionary-radio skill.

🎧 Listen to the examples

1. 🎵 Lo-Fi — chill lofi beats for late-night coding

chill lofi beats, mellow hip-hop, soft piano keys, vinyl crackle, late-night study vibes, 75 bpm, instrumental

🎤 Voice intro (text generated by OmniStep 12A3B, speech by Soprano 80M)

🎵 The track

2. 🎬 Movie Orchestra — epic cinematic orchestral

epic cinematic orchestral soundtrack, sweeping strings, French horns, building tension, Hans Zimmer style, 90 bpm, instrumental

🎤 Voice intro

🎵 The track

3. 🔥 Dark Metal — heavy dark metal for dark times

heavy dark metal, blast beats, down-tuned 7-string guitars, atmospheric, blackened death metal, 180 bpm, instrumental

🎤 Voice intro

🎵 The track

  • 🧠 Vibe coach — reads the room, matches your mood, suggests what to play next
  • 📝 Note-taker — listens to your conversation and captures the bits you want to remember
  • 💬 Conversational companion — keeps up a real back-and-forth, asks the follow-up questions
  • 🎵 Background music that matches the vibe — generates infinite music that fits what you're doing, in any style
  • 🔁 Self-evolving — gets better at being your assistant over time, via the Darwin Family weight-space evolution methodology
  • 🎤 Real-time ASR + TTS — Whisper audio in, Talker + token2wav audio out (4o-style streaming voice)
  • 🖼️ Image understanding — NaViT vision encoder

All in one model. Run it with vllm, llama-server, or the included Python scripts.

🎛 Pick your quantization — download just the one you need

The GGUFs are independent files. Download only the one that fits your VRAM — you don't need all of them. Pick from the table below.

QuantSizeVRAMBest forDownload
F166.4GB6.4GBMaximum quality, plenty of VRAMomnistep-12a3b-f16.gguf
Q8_03.4GB3.4GBNear-F16 quality, balancedomnistep-12a3b-q8_0.gguf
Q4_K_M2.0GB2.0GBRecommended — best size/quality tradeoffomnistep-12a3b-q4_k_m.gguf
Q4_01.9GB1.9GBSmallest, lowest qualityomnistep-12a3b-q4_0.gguf

Run any of them with llama-server (the Omni build of llama.cpp is in the HF model comments / wiki):

llama-server -m omnistep-12a3b-q4_k_m.gguf -ngl 99 --port 8080 --host 0.0.0.0 -c 8192

Quick start

Option 1 — vllm (the easiest, full multimodal)

pip install vllm
vllm serve sovthpaw/omnistep-12a3b \
    --max-model-len 32768 \
    --gpu-memory-utilization 0.85 \
    --trust-remote-code

Then in another terminal:

curl -s http://localhost:8000/v1/chat/completions \
    -H "Content-Type: application/json" \
    -d '{
        "model": "sovthpaw/omnistep-12a3b",
        "messages": [{"role": "user", "content": "Take a note: I need to follow up with the design team about the Q3 launch."}],
        "max_tokens": 200
    }'

See vllm Qwen2.5-Omni docs for the full multimodal API.

Option 2 — llama-server with the GGUFs (fast text path)

# Pick your quantization based on VRAM
#   F16  = 6.4GB VRAM, best quality
#   Q8_0 = 3.4GB VRAM, near-F16 quality
#   Q4_K_M = 2.0GB VRAM, recommended
#   Q4_0 = 1.9GB VRAM, smallest

llama-server \
    -m omnistep-12a3b-q4_k_m.gguf \
    -ngl 99 \
    --port 8080 \
    --host 0.0.0.0 \
    -c 8192

curl -s http://localhost:8080/v1/chat/completions \
    -H "Content-Type: application/json" \
    -d '{
        "model": "omnistep-12a3b",
        "messages": [{"role": "user", "content": "I am coding late, give me a lofi vibe and a note about what I should focus on tomorrow."}],
        "max_tokens": 200,
        "stream": true
    }'

The 4 GGUFs are deployment options — pick whichever fits your hardware. Q4_K_M is the recommended sweet spot.

Option 3 — the included Python scripts (the most fun)

The repo includes Python scripts that wire everything together for the headline use cases. After cloning:

git clone https://huggingface.co/sovthpaw/omnistep-12a3b
cd omnistep-12a3b

# Start the vllm server (one terminal)
python scripts/run_omnistep_12a3b.py serve

# In another terminal — try the modalities
python scripts/run_omnistep_12a3b.py te

From the published model card. Full card on the HuggingFace links in the sidebar.

Using it via the API

Call it like any OpenAI endpoint

Once AxForge deploys omnistep-12 for you, it answers on the OpenAI-compatible API — the same base URL and keys as every other model. (omnistep-12 below is illustrative; you get the exact model name on deployment.)

$ curl -sS https://api.axforge.ai/v1/chat/completions \
  -H "Authorization: Bearer $AXFORGE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"omnistep-12","messages":[{"role":"user","content":"Hello"}]}'

Create an account — your API key is available in the console. 3M free tokens every 30 days with every new account.

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