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OpenRouter

LongCat 2.0 API

OpenRouter
About

Build advanced reasoning agents with LongCat 2.0, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $0.30/1M input and $1.20/1M output tokens, native tool calling support, open weights architecture. Access LongCat 2.0 via the OpenRouter API with up to 262K output tokens.

Capabilities

Input Modalities

text

Output Modalities

text
Reasoning
Yes
Structured Output
No
Tool Use
Yes
WeightsOpen
Temperature
Adjustable
Attachment
Not Supported
Limits
Context Window
1.0M

Tokens

Input Limit
1.0M

Tokens

Max Output
262K

Tokens

Pricing

Standard (per 1M tokens)

Input
$0.30
Output
$1.20

Caching (per 1M tokens)

Read
$0.0060
Frequently Asked Questions

LongCat 2.0 by OpenRouter costs $0.30 per 1M input tokens and $1.20 per 1M output tokens. Cached reads cost $0.0060 per 1M tokens.

Model Details
ID
meituan/longcat-2.0
Provider
OpenRouter
Family
longcat
Release Date
Jul 20, 2026
Knowledge Cutoff
N/A
API Integration
NPM Package
@openrouter/ai-sdk-provider
Environment Variables
OPENROUTER_API_KEY
API Base URL
https://openrouter.ai/api/v1
Documentation