Model comparison

Gemini 2.5 Flash Lite vs Gemini 3.1 Pro Preview Custom Tools

Compare Google: Gemini 2.5 Flash Lite (Google) and Google: Gemini 3.1 Pro Preview Custom Tools (Google) by price, context, capabilities, and latency.

Which should you pick?

  • Price: Google: Gemini 2.5 Flash Lite is cheaper ($0.02 / 1M tokens input / $0.075 / 1M tokens output) vs Google: Gemini 3.1 Pro Preview Custom Tools ($0.376 / 1M tokens input / $2.26 / 1M tokens output).

Side by side

Google: Gemini 2.5 Flash Lite vs Google: Gemini 3.1 Pro Preview Custom Tools — full comparison

Compare price, provider, context, capabilities, latency, and source basis.

ModelProviderInputOutputContextCapabilitiesBest forLatencyStatusSource
Google: Gemini 2.5 Flash Litegoogle/gemini-2.5-flash-liteGoogle$0.02 / 1M tokens$0.075 / 1M tokens1M
StreamingTool callingJSON modeVision
image understanding, multimodal chat1000-3000msCatalogPlatform curated
Google: Gemini 3.1 Pro Preview Custom Toolsgoogle/gemini-3.1-pro-preview-customtoolsGoogle$0.376 / 1M tokens$2.26 / 1M tokens1M
StreamingTool callingJSON modeVision
image understanding, multimodal chat1000-3000msCatalogPlatform curated

FAQ

Google: Gemini 2.5 Flash Lite vs Google: Gemini 3.1 Pro Preview Custom Tools FAQ

Is Google: Gemini 2.5 Flash Lite or Google: Gemini 3.1 Pro Preview Custom Tools cheaper?

Google: Gemini 2.5 Flash Lite is cheaper ($0.02 / 1M tokens input / $0.075 / 1M tokens output) vs Google: Gemini 3.1 Pro Preview Custom Tools ($0.376 / 1M tokens input / $2.26 / 1M tokens output). Actual cost depends on your input/output token mix — estimate it with the pricing calculator.

Which has a larger context window, Google: Gemini 2.5 Flash Lite or Google: Gemini 3.1 Pro Preview Custom Tools?

Both offer the same context window: 1M tokens.

Google: Gemini 2.5 Flash Lite vs Google: Gemini 3.1 Pro Preview Custom Tools for Vision: which should I pick?

Both target Vision. Pick Google: Gemini 2.5 Flash Lite to optimize cost, or Google: Gemini 2.5 Flash Lite for the longer context window. Test both on real prompts before committing production traffic.