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LongCat Flash Lite

LongCatOpen WeightMIT · Commercial OK

Description

LongCat-Flash-Lite is a lightweight MoE model from Meituan with 68.5B total parameters and only 2.9B-4.5B activated per token. It explores N-gram embedding expansion as a new scaling direction, supporting 256K context length via YaRN. Optimized for agent tooling and programming tasks, achieving 500-700 tokens per second inference speed while maintaining strong performance on coding, math, and agentic benchmarks.

Release Date
2026-01-28
Parameters
68.5B
Context Length
Modalities
text

Capability Radar

20
general
18
coding
64
reasoning
40
scienceest.
70
agents
0
multimodal

Science uses a reasoning proxy when dedicated science benchmarks are unavailable.

Rankings

Domain#RankScoreSource
Agents & Tools93
34.0
LS
Code Ranking283
27.0
AA
General Ranking206
49.0
AA
Science261
41.0
AA

Benchmark Scores (LLM Stats)

Agents

Terminal-Bench33.8%SR

Biology

GPQA66.8%SR

Code

SWE-Bench Verified54.4%SR
SWE-bench Multilingual38.1%SR

Communication

Tau2 Retail73.1%SR
Tau2 Telecom72.8%SR
Tau2 Airline58.0%SR

Finance

MMLU85.5%SR
MMLU-Pro78.3%SR

General

CMMLU82.5%SR

Math

MATH-50096.8%SR
AIME 202472.2%SR
AIME 202563.2%SR

AA Evaluation Indices

Intelligence Index
23.9
Coding Index
16.5
Tau2
0.8
Gpqa
0.6
Ifbench
0.4
Scicode
0.3
Lcr
0.3
Terminalbench Hard
0.1
Hle
0.1

LLM Stats Category Scores

Finance
80
General
80
Healthcare
80
Language
80
Legal
80
Math
80
Tool Calling
70
Biology
70
Chemistry
70
Communication
70
Physics
70
Reasoning
70
Frontend Development
50
Code
40
Agents
30

Pricing

Input PriceFree
Output PriceFree
Blended Price (3:1)Free

Speed

Tokens/sec149.1 tokens/s
Time to First Token7.15s
Time to Answer7.15s

Available Providers

(LS internal units)
ProviderInput PriceOutput Price
Meituan100K400K

External Sources