Overview
LongCat Flash Chat vs GPT-5.1: side-by-side summary
LongCat Flash Chat and GPT-5.1 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
LongCat Flash Chat, from meituan, has a 131,072-token context window and is priced by the provider serving it on OpenRouter.
GPT-5.1, from OpenAI, has a 400,000-token context window and is priced at $1.25/M tokens input, $10/M tokens output on OpenRouter.
- Context window
- LongCat Flash Chat: 131,072 tokens
- GPT-5.1: 400,000 tokens
- Price
- LongCat Flash Chat: Pricing varies by provider
- GPT-5.1: $1.25/M tokens input, $10/M tokens output
- Provided by
- LongCat Flash Chat: meituan
- GPT-5.1: OpenAI