Grok Build 0.1 vs Phi 4: side-by-side summary

Grok Build 0.1 and Phi 4 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Grok Build 0.1, from SpaceXAI, has a 256,000-token context window and is priced at $1/M tokens input, $2/M tokens output on OpenRouter.

Phi 4, from Microsoft, has a 16,384-token context window and is priced at $0.07/M tokens input, $0.14/M tokens output on OpenRouter.

Context window

• Grok Build 0.1: 256,000 tokens
• Phi 4: 16,384 tokens

Price

• Grok Build 0.1: $1/M tokens input, $2/M tokens output
• Phi 4: $0.07/M tokens input, $0.14/M tokens output

Provided by

• Grok Build 0.1: SpaceXAI
• Phi 4: Microsoft

• Grok Build 0.1 model details, providers and pricing
• Phi 4 model details, providers and pricing