LFM 2.5 1.2B Thinking is Liquid AI's language model with a 33K context window. A lightweight 1.2B-parameter reasoning-focused Liquid Foundation Model optimized for agentic tasks, data extraction, and RAG on edge devices.
Specifications
Canonical IDliquid-lfm-2-5-1-2b-thinking
TypeLanguage
StatusActive
CreatorLiquid AILiquid AI
Context Window33K tokens
Input ModalitiesText
Output ModalitiesText
Reasoning Effortsdefault
Parameters1.2B
Release Date · 6 months ago
Benchmarks
Intelligence Index
2.7
#465
GPQA
0.3
#410
HLE
0.1
#241
IFBench
0.4
#218
Time to First Token
0.00s
#151
SciCode
0.0
#443
LCR
0.0
#393
TerminalBench Hard
0.0
#375
TAU2
0.2
#317
Output TPS
0.0
#410

Capabilities

Input1/5
Text
Image·
Audio·
Video·
PDF·
Output1/5
Text
Image·
Audio·
Video·
Embedding·
Capabilities4/13
Reasoning
Adaptive Reasoning·
Function Calling
Parallel Function Calling·
Structured Outputs
Native JSON Schema
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·

Cheapest Instances to Run It

Cloud GPU instances that can host LFM 2.5 1.2B Thinking, ranked by cheapest on-demand price. The model needs about 3 GB of GPU memory at FP16 precision (estimated from its parameter count), so treat the fit as guidance rather than a guarantee.

All clouds
FP16 (full precision)
US Dollar ($)
Instance
Cloud
GPU
VRAM
Price
Cheapest region
Standard_NV4as_v4AzureAMD Radeon Instinct MI2516 GB$0.233/hrwestus2
g4ad.xlargeAWSRadeon Pro V5208 GB$0.379/hrus-east-1
g5g.xlargeAWST4g16 GB$0.420/hrus-east-1
7 more instances can run LFM 2.5 1.2B Thinking
Unlock the full ranked list and FP8 / INT4 quantization with a CloudPrice subscription.

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
LFM 2 24B A2B128KAvailable
LFM 2.5 1.2B Thinking33KCurrent
LFM 2.5 1.2B Instruct33KAvailable
LFM 2.5 8B A1BAvailable
LFM 2 2.6BAvailable
LFM 2 8B A1BAvailable
LFM 2 1.2BAvailable
LFM 2.5 1.6B VLAvailable
LFM 40B131K$0.100$0.200Available
LFM 7B131K$0.025$0.040Available

Model IDs

lfm2-5-1-2b-thinking
liquid-lfm-2-5-1-2b-thinking
liquid/lfm-2.5-1.2b-thinking:free