# LongCat 2.0

LongCat 2.0 is Meituan's language model for code understanding, repository changes, and tasks that require multiple steps. Its sparse mixture-of-experts architecture supports text generation and tool use for coding assistants and other agents. Its published context window is 1,048,756 tokens. The advertised input rate is $0.30 per million input tokens. The advertised output rate is $1.20 per million output tokens.

- Model identifier: ` meituan/longcat-2.0 `
- Creator: meituan
- Providers: AtlasCloud
- Model type: Text generation
- Canonical model page: [LongCat 2.0](<https://impossibl.com/meituan/longcat-2.0>)
- API availability: Listed as serving through Impossibl.

## Providers

AtlasCloud hosts LongCat 2.0. Impossibl routes your request intelligently and handles failover automatically when a provider is down.

| Provider | Endpoint location | Routes | Verified context window | Tool calling |
| --- | --- | --- | --- | --- |
| AtlasCloud | Not specified | 1 | Not verified | Not verified |

The model price applies whichever provider serves the request. Endpoint locations do not guarantee inference residency.

## Specs and Capabilities

- Context window: 1,048,756 tokens
- Maximum output tokens: Not published in the public catalog; this is separate from the context window.
- Inputs: text
- Outputs: text
- Tool calling: Not published

## API access

Use ` meituan/longcat-2.0 ` as the model identifier through the Impossibl API.

Published API endpoints:

- ` /v1/chat/completions `

[API quickstart](<https://impossibl.com/docs/agent-quickstart>) · [Models and billing documentation](<https://impossibl.com/docs/models>)

## Published API prices

All rates are in USD. An unpublished rate is unknown, not zero. Workspace-specific pricing, taxes, balance-purchase fees, billing adjustments, and tool charges can affect the amount paid.

| Usage | Published base rate | Billing unit |
| --- | --- | --- |
| Input | $0.30 | per million input tokens |
| Output | $1.20 | per million output tokens |
| Cache read | $0.006 | per million cached input tokens |
| Cache write (default retention) | Not published | per million tokens |
| Cache write (one-hour retention) | Not published | per million tokens |
| Audio input | Not published | per million audio input tokens |

## Availability and retirement

The model is listed as serving. No retirement is announced in the current public catalog.

## Frequently asked questions

### What is LongCat 2.0?

LongCat 2.0 is Meituan's language model for code understanding, repository changes, and tasks that require multiple steps. Its sparse mixture-of-experts architecture supports text generation and tool use for coding assistants and other agents.

Sources: [Meituan model card](<https://huggingface.co/meituan-longcat/LongCat-2.0>); [OpenRouter model listing](<https://openrouter.ai/meituan/longcat-2.0>)

### How much does LongCat 2.0 cost?

LongCat 2.0 costs $0.30 per million input tokens and $1.20 per million output tokens through the Impossibl API. Cache reads cost $0.006 per million tokens. All rates are in USD.

### What is the context length of LongCat 2.0?

LongCat 2.0 has a 1,048,756-token context window through the Impossibl API.

### What inputs and outputs does LongCat 2.0 support?

LongCat 2.0 accepts text as input. LongCat 2.0 returns text.

### How do I use LongCat 2.0 through an API?

LongCat 2.0 is available through the Impossibl API. Use meituan/longcat-2.0 as the model identifier with /v1/chat/completions. The quickstart explains how to create an API key and send your first request.

## Sources and related links

Prices, limits, capabilities, endpoints, and availability come from the public Impossibl catalog. Creator documentation supplies descriptions and release dates where available; it does not override the published API offering.

- [Public Impossibl model catalog](<https://api.impossibl.com/v1/models>)
- [Full model directory as JSON](<https://impossibl.com/models.json>)
- [LongCat 2.0: model details and pricing](<https://impossibl.com/meituan/longcat-2.0>)
- [Model directory](<https://impossibl.com/models>)
- [Meituan model card](<https://huggingface.co/meituan-longcat/LongCat-2.0>)
- [OpenRouter model listing](<https://openrouter.ai/meituan/longcat-2.0>)