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Vercel AI Gateway

LongCat Flash Chat API

Vercel AI Gateway
About

Process massive datasets with LongCat Flash Chat, featuring an expansive 128K context window for long-document analysis. This model delivers available completely free of charge, native tool calling support. Access LongCat Flash Chat via the Vercel AI Gateway API with up to 8K output tokens.

Capabilities

Input Modalities

text

Output Modalities

text
Reasoning
No
Structured Output
No
Tool Use
Yes
WeightsClosed
Temperature
Adjustable
Attachment
Not Supported
Limits
Context Window
128K

Tokens

Input Limit
128K

Tokens

Max Output
8K

Tokens

Pricing

Standard (per 1M tokens)

Input
Free
Output
Free
Frequently Asked Questions

LongCat Flash Chat by Vercel AI Gateway costs Free per 1M input tokens and Free per 1M output tokens.

Model Details
ID
meituan/longcat-flash-chat
Provider
Vercel AI Gateway
Family
longcat
Release Date
Aug 30, 2025
Knowledge Cutoff
Oct 1, 2024
API Integration
NPM Package
@ai-sdk/gateway
Environment Variables
AI_GATEWAY_API_KEY
Documentation