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 · 9 months ago
Benchmarks
Intelligence Index
#533
GPQA
#473
HLE
#331
IFBench
#245
Time to First Token
#181
SciCode
#519
LCR
#471
TerminalBench Hard
#397
TAU2
#342
Output TPS
#434

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/hr
Standard_NV4ads_V710_v5AzureAMD Radeon Pro V710 (24GB)4 GB$0.333/hr
g5g.xlargeAWST4g16 GB$0.420/hr
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 A2B128K——Available
LFM 2.5 1.2B Thinking33K——Current
LFM 2.5 1.2B Instruct33K——Available
LFM 2.5 8B A1B————Available
LFM 2 2.6B————Available
LFM 2 8B A1B————Available
LFM 2 1.2B————Available
LFM 2.5 1.6B VL————Available
LFM 2.5 2.6B Free—66K——Available
LFM D166K$0.040—Available
LFM 2.5 2.6B128K——Available

Model IDs

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