Gemini 3.5 Flash Lite vs Phi 4: side-by-side summary

Gemini 3.5 Flash Lite and Phi 4 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Gemini 3.5 Flash Lite, from Google, has a 1,048,576-token context window and is priced at $0.30/M tokens input, $2.50/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

• Gemini 3.5 Flash Lite: 1,048,576 tokens
• Phi 4: 16,384 tokens

Price

• Gemini 3.5 Flash Lite: $0.30/M tokens input, $2.50/M tokens output
• Phi 4: $0.07/M tokens input, $0.14/M tokens output

Provided by

• Gemini 3.5 Flash Lite: Google
• Phi 4: Microsoft

• Gemini 3.5 Flash Lite model details, providers and pricing
• Phi 4 model details, providers and pricing