Grok 4.3 vs Phi 4 Mini Instruct: side-by-side summary

Grok 4.3 and Phi 4 Mini Instruct are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Grok 4.3, from SpaceXAI, has a 1,000,000-token context window and is priced at $1.25/M tokens input, $2.50/M tokens output on OpenRouter.

Phi 4 Mini Instruct, from Microsoft, has a 131,072-token context window and is priced by the provider serving it on OpenRouter.

Context window

• Grok 4.3: 1,000,000 tokens
• Phi 4 Mini Instruct: 131,072 tokens

Price

• Grok 4.3: $1.25/M tokens input, $2.50/M tokens output
• Phi 4 Mini Instruct: Pricing varies by provider

Provided by

• Grok 4.3: SpaceXAI
• Phi 4 Mini Instruct: Microsoft

• Grok 4.3 model details, providers and pricing
• Phi 4 Mini Instruct model details, providers and pricing