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 · 4 months ago
Benchmarks
Intelligence Index
8.1
#436
Coding Index
1.4
#376
GPQA
0.3
#387
HLE
0.1
#217
IFBench
0.4
#203
Time to First Token
0.00s
#131
SciCode
0.0
#419
LCR
0.0
#369
TerminalBench Hard
0.0
#363
TAU2
0.2
#303
Output TPS
0.0
#399

Capabilities

Input1/5
Text
Image·
Audio·
Video·
PDF·
Output1/5
Text
Image·
Audio·
Video·
Embedding·
Capabilities1/13
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·

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
LFM 2 24B A2B128K$0.030$0.120Available
LFM 2.5 1.2B Thinking33KCurrent
LFM 2.5 1.2B Instruct33KAvailable
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