LongCat-2.0

Released
2026-06-30
Last refreshed
2026-11-02
Status
Researched 128d ago
Open sourceCommercial use: permittedCodingRAGAgentsLong contextJSON / Tool use
Meituan releases · 2 in the last 12 monthsChangelog →
Specifications
Family
LongCat
Released
2026-06-30
Context
1M
Max output
128K
Parameters
1.6T total; ~48B active
Architecture
Mixture of Experts
Specialization
coding
Openness
Open source
License
MITOSI-approvedPermitted
Weights
Available
Code
Unknown
Training
Pretrained
Created by
Meituan

Chinese technology company whose in-house AI team builds the LongCat language-model family.

Beijing, China
Website
Pricing
Output / 1M
$1.20
Input / 1M
$0.300

Cheapest of 2 routes · OpenRouter · cache read $0.006

Providers(2)
LongCat API PlatformOpenRouter
View 2 provider routes
Links
Website HuggingFace

About

LongCat-2.0 is Meituan's large-scale MoE language model for coding, long-context, and agentic tasks. The model has 1.6T total parameters, roughly 48B activated per token, native 1M context support, and API access through OpenAI- and Anthropic-compatible LongCat endpoints. Public MIT-licensed safetensors weights are downloadable from Hugging Face, with Transformers, vLLM, and SGLang deployment support.

Providers(2)

Compare all 2

Compare API pricing across 2 tracked provider routes for input and output tokens, batch, and cached reads when available.

ProviderInput / 1MOutput / 1MCacheRoute
OpenRouter$0.300$1.20read $0.006
Serverless
LongCat API Platform$0.750$2.95read $0.015
Serverless

Capabilities

ReasoningJSON / Tool usePrompt Caching

Benchmark peer barsfor Coding

SWE-bench ProRank 25 of 62
Claude Fable 5.2
93.0
Claude Opus 5.5
89.9
Claude Sonnet 5.5
81.3
Claude Fable 5.1
81.2
LongCat-2.0current
59.5

Benchmark scores(4)

Scores are benchmark-specific and are direction-aware: the same numeric gap can mean very different outcomes across suites. Use the leaderboard context and this model's provider route to decide whether the winning margin is meaningful for your workload.
BenchmarkScoreVersionEvaluationSource
Terminal-Bench 2.1
70.8Terminal-Bench 2.1; Code Agent chart; LongCat launch benchmarkObserved 2026-06-30—
Source
SWE-bench Pro
59.5SWE-bench Pro; Code Agent chart; LongCat launch benchmarkObserved 2026-06-30—
Source
SWE-bench Multilingual
77.3SWE-bench Multilingual; Code Agent chart; LongCat launch benchmarkObserved 2026-06-30—
Source
BrowseComp
79.9BrowseComp; Search Agent chart; LongCat launch benchmarkObserved 2026-06-30—
Source

Migration checks

No linked migration route is available for this model yet.