LongCat 2.0 vs Solar Pro 4: side-by-side summary

LongCat 2.0 and Solar Pro 4 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.

Solar Pro 4, from upstage, has a 524,288-token context window and is priced at $0.03/M tokens input, $0.12/M tokens output on OpenRouter.

Context window

• LongCat 2.0: 1,048,756 tokens
• Solar Pro 4: 524,288 tokens

Price

• LongCat 2.0: $0.30/M tokens input, $1.20/M tokens output
• Solar Pro 4: $0.03/M tokens input, $0.12/M tokens output

Provided by

• LongCat 2.0: meituan
• Solar Pro 4: upstage

• LongCat 2.0 model details, providers and pricing
• Solar Pro 4 model details, providers and pricing