LongCat-2.0

Model overview

LongCat-2.0

Meituan's LongCat 2.0 model with million-token context, tool use, API access, and open weights.

general LLMreasoningcodinglong contextagentchatcode generationsoftware engineering agentlocal inferenceenterprise access

External observations Cross-model risk Compare Company Rankings Public signals

Model risk

Current observations

1current adverse observations

Negative / riskAPI / serviceMigration riskOfficial · Current risk

Six legacy LongCat Flash API entries were retired on May 29

Meituan's change log lists six legacy Chat, Thinking, and Omni model APIs as retired on May 29 and records LongCat-2.0 launching on June 30. Downloadable weights do not imply continuity for the retired APIs.

LongCat platform change logHigh confidenceObserved 2026-05-29Source as of 2026-07-15 Action

Pin LongCat-2.0 for new integrations and test model-ID, prompt, and tool-protocol migration explicitly.

Open source

Representative version

LongCat-2.0

Company	Meituan
Release	2026-06-30
Release type	Model release
Parameters	1,600B / 48B active
Architecture	Mixture-of-experts transformer with LongCat Sparse Attention
Context	1,000,000
Input modalities	text
Output modalities	text / code / tool_call
Tool use / function calling	Confirmed: Tool use, Function calling
Structured output / reasoning	Confirmed: Reasoning
Vision / audio / video	Vision: Not disclosed; Audio: Not disclosed; Video: Not disclosed
Open weights / License	Weights available / MIT License sourcemeituan-longcat-2-0-checkpoint-2026-07-05 · 2026-08-04
Vendor API	Available LongCat platform change logmeituan-longcat-2-0-current · 2026-06-30
OpenRouter	Not separately listed on OpenRouter
Pricing	Official · 2026-06-30: $0.75 / $2.95 input / output, per 1M tokens
Benchmark	No reliable public source
Public signals	1 community discussion / 1 activity snapshot
Use cases	local inference / coding and review / Long-context agents / research evaluation
Claim evidence	Release eventLongCat platform change logLongCat-2.0 · 2026-06-30 Model specifications / Weight checkpointLongCat-2.0 model cardLongCat-2.0 · LongCat-2.0 · LongCat-2.0

OpenRouter

Pricing / context / availability

OpenRouter	Not separately listed on OpenRouter
OpenRouter listing	Not separately listed in the current OpenRouter public list
Mapped version	LongCat-2.0 meituan-longcat-2-0-current
Pricing	Official · 2026-06-30: $0.75 / $2.95 input / output, per 1M tokens
Context	1000000
Speed/Latency	No reliable public source
Snapshot time	2026-08-11T06:28:09.895Z
Source	View source

Verified limitations

Usage boundaries

The paid API launched June 30; first-party open weights followed July 5, 2026.

Public activity counters

Hugging Face model-card activity snapshot

Platform	Entry	Last-month downloads	Current likes	Current Spaces	Time	Source
huggingface Current HF activity snapshot	meituan-longcat/LongCat-2.0	1,747	249	0	2026-08-11T06:28:09.895Z	View source

Downloads are Hugging Face's trailing-month counter; likes and Spaces are snapshots at collection time.

Vertical comparison

Current available versions

Version	Release	Parameters	Context	Input	Output	Open weights / License	Vendor API	Source tier
LongCat-2.0	2026-06-30	1,600B / 48B active	1,000,000	text	text / code / tool_call	No open weights currently / weight license not disclosed	Available	Official source
LongCat-2.0	2026-07-05	1,600B / 48B active	1,000,000	text	text / code / tool_call	Weights available / MIT	Not disclosed	Official source

Missing public information

Public information not yet available

Not listed on OpenRouterNo reliable benchmark sourceNo linkable model-specific reviewSpeed/latency not disclosed