Gemini 3.5 Flash Lite vs Mercury 2.5 Preview: side-by-side summary

Gemini 3.5 Flash Lite and Mercury 2.5 Preview 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.

Mercury 2.5 Preview, from inception, has a 260,000-token context window and is priced at $0.04/M tokens input, $0.15/M tokens output on OpenRouter.

Context window

• Gemini 3.5 Flash Lite: 1,048,576 tokens
• Mercury 2.5 Preview: 260,000 tokens

Price

• Gemini 3.5 Flash Lite: $0.30/M tokens input, $2.50/M tokens output
• Mercury 2.5 Preview: $0.04/M tokens input, $0.15/M tokens output

Provided by

• Gemini 3.5 Flash Lite: Google
• Mercury 2.5 Preview: inception

• Gemini 3.5 Flash Lite model details, providers and pricing
• Mercury 2.5 Preview model details, providers and pricing