Grok 4.6 vs Solar Pro 4: side-by-side summary

Grok 4.6 and Solar Pro 4 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Grok 4.6, from SpaceXAI, has a 500,000-token context window and is priced at $2/M tokens input, $6/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

• Grok 4.6: 500,000 tokens
• Solar Pro 4: 524,288 tokens

Price

• Grok 4.6: $2/M tokens input, $6/M tokens output
• Solar Pro 4: $0.03/M tokens input, $0.12/M tokens output

Provided by

• Grok 4.6: SpaceXAI
• Solar Pro 4: upstage

• Grok 4.6 model details, providers and pricing
• Solar Pro 4 model details, providers and pricing