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Vercel AI Gateway

LongCat Flash Thinking API

Vercel AI Gateway
About

Build advanced reasoning agents with LongCat Flash Thinking, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $0.15/1M input and $1.50/1M output tokens, native tool calling support. Access LongCat Flash Thinking via the Vercel AI Gateway API with up to 8K output tokens.

Capabilities

Input Modalities

text

Output Modalities

text
Reasoning
Yes
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
$0.15
Output
$1.50
Frequently Asked Questions

LongCat Flash Thinking by Vercel AI Gateway costs $0.15 per 1M input tokens and $1.50 per 1M output tokens.

Model Details
ID
meituan/longcat-flash-thinking
Provider
Vercel AI Gateway
Family
longcat
Release Date
Sep 23, 2025
Knowledge Cutoff
Oct 1, 2024
API Integration
NPM Package
@ai-sdk/gateway
Environment Variables
AI_GATEWAY_API_KEY
Documentation