Gemini 2.5 Flash Lite Preview 09-2025 vs Gemini 2.5 Pro: side-by-side summary

Gemini 2.5 Flash Lite Preview 09-2025 and Gemini 2.5 Pro are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Gemini 2.5 Flash Lite Preview 09-2025, from Google, has a 1,048,576-token context window and is priced by the provider serving it on OpenRouter.

Gemini 2.5 Pro, from Google, has a 1,048,576-token context window and is priced at $1.25/M tokens input, $10/M tokens output on OpenRouter.

Context window

• Gemini 2.5 Flash Lite Preview 09-2025: 1,048,576 tokens
• Gemini 2.5 Pro: 1,048,576 tokens

Price

• Gemini 2.5 Flash Lite Preview 09-2025: Pricing varies by provider
• Gemini 2.5 Pro: $1.25/M tokens input, $10/M tokens output

Provided by

• Gemini 2.5 Flash Lite Preview 09-2025: Google
• Gemini 2.5 Pro: Google