Solar Pro 4 vs GLM 5.3: side-by-side summary

Solar Pro 4 and GLM 5.3 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

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.

GLM 5.3, from Z.ai, has a 1,048,576-token context window and is priced at $1.40/M tokens input, $4.40/M tokens output on OpenRouter.

Context window

• Solar Pro 4: 524,288 tokens
• GLM 5.3: 1,048,576 tokens

Price

• Solar Pro 4: $0.03/M tokens input, $0.12/M tokens output
• GLM 5.3: $1.40/M tokens input, $4.40/M tokens output

Provided by

• Solar Pro 4: upstage
• GLM 5.3: Z.ai

• Solar Pro 4 model details, providers and pricing
• GLM 5.3 model details, providers and pricing