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OmicAI-27B

OmicAI is a family of language models optimized for omics data analysis and tool interaction over the omicverse toolkit. This is the 27B member — the largest released variant.

OmicAI-27B is Qwen3.8-27B fine-tuned with ms-swift / Together using LoRA (all-linear, rank 16, α 32) merged into the final weights.

The OmicAI family

Model Base Access
OmicAI-0.8B Qwen3.5-0.8B Open — Apache-2.0
OmicAI-4B Qwen3.5-4B Open — Apache-2.0
OmicAI-9B MiMo-V2.6-Distill-Qwen-9B Open — Apache-2.0
OmicAI-27B (this model) Qwen3.8-27B By application

Training Data

The training trajectories are produced by OmicOS and OmicVerse through a paper-reproduction process over the last three years of publications: the systems retrieve recent omics papers, then attempt to reproduce their analyses end-to-end from the raw data, yielding multi-turn agent trajectories (retrieval → code → omicverse tool calls → recovery from execution feedback). A trajectory is kept only when an automatic judge confirms the deliverable is legitimate and a scoreboard confirms the reproduced result matches or surpasses the paper's reported (SOTA) numbers.

Key Details

Base model Qwen/Qwen3.8-27B
Method LoRA (all-linear, rank 16, α 32, dropout 0.05) → merged; 1 epoch
Precision bfloat16 (merged weights, 18 shards)
Chat template qwen3_5 — inference template must match training

Usage

from transformers import AutoModelForCausalLM, AutoTokenizer
tok = AutoTokenizer.from_pretrained("omicverse/OmicAI-27B")
model = AutoModelForCausalLM.from_pretrained(
    "omicverse/OmicAI-27B", torch_dtype="bfloat16", device_map="auto")

Also loadable with vLLM (use the qwen3_5 chat template).

Intended Use & Limitations

  • Intended: research assistant for single-cell / bulk / spatial omics analysis and omicverse pipeline generation.
  • Limitations: a research model — generated analysis code should be executed and verified before use; may hallucinate APIs outside the omicverse/scanpy surface it was trained on.

Ecosystem

Part of the omicOS / omicAI effort and the omicverse ecosystem. Smaller members: OmicAI-4B · OmicAI-9B · OmicAI-0.8B.

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