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LFM2.5 24B A2B

Active Parameters

24B

Context Length

131K

Modality

Text

Architecture

Mixture of Experts (MoE)

License

other

Release Date

12 Oct 2026

Knowledge Cutoff

-

API Pricing (per 1M)

Self-hosted only

System Requirements

VRAM requirements for different quantization methods and context sizes

1,024 tokens

48.52 GB VRAM

Consumer

3x RTX 4090

24GB VRAM

Datacenter

1x NVIDIA A100

80GB VRAM

Apple Silicon

1x Apple M3 Max

128GB VRAM

131,072 tokens

58.94 GB VRAM

Consumer

3x RTX 4090

24GB VRAM

Datacenter

1x NVIDIA A100

80GB VRAM

Apple Silicon

1x Apple M3 Max

128GB VRAM

Architecture Diagram

Input TokensToken EmbeddingPosition: RoPEHidden: 2k · Context: 131K · Vocab: 128kx 40 layersRMSNormPre-AttentionGrouped-Query Attention32Q / 8KV headsHead dim: 64+RMSNormPre-FFNSparse MoE FFN (4/64 experts)SwiGLUIntermediate: 1.5k+Final RMSNormOutput Logits

Evaluation Benchmarks

No evaluation benchmarks for LFM2.5 24B A2B available.

Rankings

Overall Rank

-

Coding Rank

-

About LFM2.5 24B A2B

LFM2.5 24B A2B is a mixture-of-experts model from Liquid AI activating 2 billion parameters per token. It leverages Liquid's non-transformer dynamical architecture designed for high efficiency and extended sequence modeling.

Technical Specifications

Attention

Attention Structure

Grouped-Query Attention

Attention Heads

32

Key-Value Heads

8

Attention Head Dimension

64

Position Embedding

ROPE

RoPE Theta

10,000,000

Sliding Window Attention

No

Sliding Window Size

-

Sliding Window Ratio

-

Linear Attention

Yes

Linear Attention Ratio

75.0%

Normalization

RMS Normalization

Activation Function

SwigLU

Dimensions

Auxiliary Parameters

-

Hidden Dimension Size

2,048

Number of Layers

40

FFN Intermediate Size (Dense)

11,776

Multi-Token Prediction Heads

-

Tokenizer

Vocabulary Size

128,000

Mixture of Experts

Total Expert Parameters

2.5B

Number of Experts

64

Active Experts

4

Shared Experts

-

FFN Intermediate Size (per Expert)

1,536

Dense Layers Before MoE

2

About LFM2

The LFM2 model family developed by Liquid AI.


Other LFM2 Models