gemini-2.5-flash-lite-preview-09-2025

Basic Information

• Developer: Google DeepMind, part of the Gemini 2.5 model family, with a stable version released and fully available on July 22, 2025.
• Positioning: The fastest and most cost-effective model in the Gemini 2.5 series, optimized for high-throughput, low-latency scenarios.
• Access Method: Developers can call it by specifying “gemini-2.5-flash-lite” in their code, supporting Google AI Studio and Vertex AI platforms.

Core Features

• Cost Efficiency: Input tokens priced at $0.10 per million, output tokens at $0.40 per million; audio input prices are 40% lower than in the preview version.
• Low Latency: Latency is lower than that of Gemini 2.0 Flash-Lite and 2.0 Flash; in a certain automotive diagnostic scenario, latency is reduced by 45%, and power consumption is lowered by 30%.
• Superior Performance: Outperforms 2.0 Flash-Lite in multiple benchmarks—for instance, in the AIME 2025 math test, the reasoning pattern score is 63.1%, compared to 29.7% for 2.0 Flash.
• Full Functionality: Supports a context window of up to 1 million tokens, as well as native tools such as thought budget control, Google Search grounding, and code execution.

Technical Highlights

• Controllable Reasoning Mode: Allows enabling inference capabilities on demand; in the reasoning mode, LiveCodeBench code generation scores 34.3%, while in non-reasoning mode it scores 33.7%.
• Multi-modal Capabilities: MMMU visual reasoning score is 72.9%, higher than 2.0 Flash’s 69.3%; Vibe-Eval image understanding reasoning mode score is 57.5%.
• Long Context Processing: In the 128k average-length MRCR v2 test, the reasoning mode score is 30.6%, outperforming 2.0 Flash’s 19.0%.

Market Impact

• Completes Product Matrix: As the lowest-cost model in the 2.5 series, it facilitates the deployment of large-scale production-level applications.
• Empowers Enterprises to Reduce Costs: With its low pricing and low power consumption features, it helps enterprises control costs when handling massive request volumes.
• Improves Development Efficiency: Its rapid response capability enables developers to efficiently build dynamic insight-driven applications.

Application Scenarios

• Latency-Sensitive Tasks: High-frequency scenarios such as translation and classification, leveraging its low-latency advantage to enhance response speed.
• Code Development: Supports UI code writing and multi-language code editing; SWE-bench Verified multi-round attempts achieve a score of 44.9%.
• Data Processing: Enables quick scanning of massive outputs or conversion of large PDFs into interactive web applications.
• Domain-Specific Diagnostics: For example, in automotive diagnostic scenarios, it delivers low-latency, low-power fault analysis.

Related Evaluations:

“Ranked Second in Large Model Rankings! Gemini-2.5-flash-preview-05-20 All-around Comparative Evaluation”

“Gemini-2.5-pro vs. Claude-3.7-Sonnet Frontend Programming Capability Real-World Duel”