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A

LongCat API

LongCat API provides an AI model relay service through OpenAI-compatible endpoints.

Categories

中转站
GeminiLongcat Flash

LongCat API offers 4 LLM API models.

Speed benchmark average: 110 tok/s.

LongCat API interface preview
Avg Speed109.86 tok/s
Latency7.24 s
Total Tests130
Models4
Updated4/16/2026
Created At12/7/2025
Website

API Endpoints

  • Historical / Unverified
    https://api.longcat.chat

Health Check

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LongCat API Health Check

One-Click Speed Test

Launch speed test directly via URL parameters, automatically fill the form and start 5-round conversation speed test

baseUrl · The base URL of the OpenAI-compatible API endpoint to testapiKey · The API key for the endpointmodelId · The model ID to test
Learn more about one-click speed test
https://lmspeed.net/en?baseUrl=https%3A%2F%2Fapi.groq.com%2Fopenai%2Fv1&apiKey=gsk_xxx&modelId=llama-3.1-70b-versatile

Supported Models

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LongCat API Supported Models

Recent Test Records

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LongCat API Recent Test Records
OverviewPerformance4PricingTests130HealthEmbed

Leaderboard Rankings

Speed
153.7 tokens/s#15/100
Latency
1.81 s#54/100