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Google: Gemini 3.1 Flash Lite Preview

google/gemini-3.1-flash-lite-preview

Released Mar 3, 20261,048,576 context
$0.25/M input tokens$1.50/M output tokens$0.50/M audio tokens

Gemini 3.1 Flash Lite Preview is Google's high-efficiency model optimized for high-volume use cases. It outperforms Gemini 2.5 Flash Lite on overall quality and approaches Gemini 2.5 Flash performance across key capabilities. Improvements span audio input/ASR, RAG snippet ranking, translation, data extraction, and code completion. Supports full thinking levels (minimal, low, medium, high) for fine-grained cost/performance trade-offs. Priced at half the cost of Gemini 3 Flash.

Recent activity on Gemini 3.1 Flash Lite Preview

Total usage per day on OpenRouter

Prompt
693M
Completion
17.3M
Reasoning
6.77M

Prompt tokens measure input size. Reasoning tokens show internal thinking before a response. Completion tokens reflect total output length.