LongCat 2.0 vs GPT-5.6 Luna Pro: side-by-side summary

LongCat 2.0 and GPT-5.6 Luna Pro are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

LongCat 2.0, from meituan, has a 1,048,756-token context window and is priced at $0.30/M tokens input, $1.20/M tokens output on OpenRouter.

GPT-5.6 Luna Pro, from OpenAI, has a 1,050,000-token context window and is priced at $0.10/M tokens input, $0.60/M tokens output on OpenRouter.

Context window

• LongCat 2.0: 1,048,756 tokens
• GPT-5.6 Luna Pro: 1,050,000 tokens

Price

• LongCat 2.0: $0.30/M tokens input, $1.20/M tokens output
• GPT-5.6 Luna Pro: $0.10/M tokens input, $0.60/M tokens output

Provided by

• LongCat 2.0: meituan
• GPT-5.6 Luna Pro: OpenAI

• LongCat 2.0 model details, providers and pricing
• GPT-5.6 Luna Pro model details, providers and pricing