LFM2.5-8B-A1B APEX GGUF
APEX (Adaptive Precision for EXpert Models) quantizations of LiquidAI/LFM2.5-8B-A1B.
Brought to you by the LocalAI team | APEX Project
Available Files
| File | Profile | Size | Best For |
|---|---|---|---|
| LFM2.5-8B-A1B-APEX-I-Quality.gguf | I-Quality | 6.1 GB | Highest quality with imatrix |
| LFM2.5-8B-A1B-APEX-Quality.gguf | Quality | 6.1 GB | Highest quality standard |
| LFM2.5-8B-A1B-APEX-I-Balanced.gguf | I-Balanced | 6.3 GB | Best overall quality/size ratio |
| LFM2.5-8B-A1B-APEX-Balanced.gguf | Balanced | 6.3 GB | General purpose |
| LFM2.5-8B-A1B-APEX-I-Compact.gguf | I-Compact | 4.2 GB | Consumer GPUs, best quality/size |
| LFM2.5-8B-A1B-APEX-Compact.gguf | Compact | 4.2 GB | Consumer GPUs |
| LFM2.5-8B-A1B-APEX-I-Mini.gguf | I-Mini | 3.6 GB | Smallest viable, fastest inference |
(I-variants use imatrix-calibrated quantization; the matching base profiles are the same size without imatrix weighting.)
What is APEX?
APEX is a quantization strategy for Mixture-of-Experts (MoE) models. It classifies tensors by role (routed expert, shared expert, attention, token-mixing) and applies a layer-wise precision gradient — edge layers get higher precision, middle layers get more aggressive compression. I-variants use diverse imatrix calibration (chat, code, reasoning, tool-calling, multilingual, Wikipedia).
For this hybrid architecture, APEX additionally:
- Applies the edge gradient to the routed experts (the dominant parameter cost).
- Treats the short-convolution token-mixing tensors (
shortconv.in_proj/out_proj) like attention — keeping the per-layer attention precision rather than the flat fallback. - Keeps the 2 leading dense FFN layers at edge (shared) precision.
See the APEX project for full details.
Architecture
- Base Model: LiquidAI/LFM2.5-8B-A1B
- Architecture:
lfm2_moe— hybrid short-convolution + attention MoE - Layers: 24 (2 leading dense + 22 MoE)
- Layer mix: 18 short-convolution + 6 full-attention layers
- Experts: 32 routed (4 active per token)
- Total Parameters: ~8B
- Active Parameters: ~1B per token
Run with LocalAI
local-ai run mudler/LFM2.5-8B-A1B-APEX-GGUF@LFM2.5-8B-A1B-APEX-I-Balanced.gguf
Credits
APEX is brought to you by the LocalAI team. Developed through human-driven, AI-assisted research. Built on llama.cpp.