Gemini 3 Flash is a high-performance large language model developed by Google DeepMind, designed to deliver frontier-level reasoning with low latency and high throughput. It demonstrates strong performance across reasoning, multimodal understanding, and agentic benchmarks while supporting up to a 1M-token context window, making it well suited for real-time, high-concurrency, and production-scale AI workloads.
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Gemini 3 Flash API on Kie.ai enables Pro-level reasoning, multimodal understanding, and agentic workflows with low latency and efficient inference.
Gemini 3 Flash (also referred to as Gemini 3 Flash Preview) is a high-speed, high-value thinking large language model (LLM) developed by Google DeepMind as part of the Gemini 3 model family and released in late 2025. It is designed for agentic workflows, multi-turn chat, and coding assistance, delivering near Pro-level reasoning and tool-use performance with substantially lower latency than larger Gemini variants. Compared to Gemini 2.5 Flash, Gemini 3 Flash provides broad quality improvements across reasoning, multimodal understanding, and reliability. Building on this model, the Gemini 3 Flash API makes Gemini 3 Flash available to developers in a programmable, production-oriented form. The API supports a 1M token context window and native multimodal inputs including text, images, audio, video, and PDFs, with text output. It includes configurable reasoning via thinking levels (minimal, low, medium, high), structured output, tool use, and automatic context caching, enabling interactive development, long-running agent loops, and modern LLM-powered systems that require strong reasoning without the cost or latency of full-scale frontier models.
The Gemini 3 Flash API delivers near Pro-level reasoning with low-latency inference, outperforming Gemini 2.5 Pro in reasoning efficiency while enabling real-time and high-throughput workloads. Configurable thinking levels allow each request to balance reasoning depth, latency, and cost, supporting both fast interactions and more complex, multi-step workflows at scale.
The Gemini 3 Flash API natively processes text, images, audio, video, and PDFs within a single unified context. This native multimodal design allows Gemini 3 Flash API to reason across multiple input modalities without external orchestration, enabling consistent multimodal understanding and analysis.
With support for up to a 1M token context window, the Gemini 3 Flash API enables long-context reasoning over large documents, extended conversations, and complex multimodal inputs. Gemini 3 Flash API is designed to maintain predictable latency and efficiency even as context size grows.
The Gemini 3 Flash Preview API is designed for agentic systems, with built-in support for tool use, structured outputs, and multi-turn state management. Gemini 3 Flash Preview API enables reliable execution planning, deterministic responses, and integration with external tools in production-grade agent workflows.
The following benchmark results evaluate Gemini 3 Flash (Gemini 3 Flash Preview) alongside other leading frontier and high-performance models, including Gemini 3 Pro, Gemini 2.5 Flash, Gemini 2.5 Pro, Claude Sonnet 4.5, GPT-5.2, and Grok 4.1 Fast, across standardized evaluations covering academic reasoning, multimodal understanding, mathematics, coding, agentic tool use, long-horizon workflows, factuality, multilingual reasoning, and long-context performance; the table is intended to provide a capability-focused view of relative reasoning strength and task coverage at scale, independent of pricing considerations, and should be read as a comparative snapshot rather than a single-metric ranking.
| Benchmark Category | Benchmark | Notes | Gemini 3 Flash | Gemini 3 Pro | Gemini 2.5 Flash | Gemini 2.5 Pro | Claude Sonnet 4.5 | GPT-5.2 | Grok 4.1 Fast |
|---|---|---|---|---|---|---|---|---|---|
| Academic Reasoning | Humanity’s Last Exam | No tools | 33.70% | 37.50% | 11.00% | 21.60% | 13.70% | 34.50% | 17.60% |
| Academic Reasoning | Humanity’s Last Exam | With search & code | 43.50% | 45.80% | — | — | — | 45.50% | — |
| Visual Reasoning | ARC-AGI-2 | ARC Prize verified | 33.60% | 31.10% | 2.50% | 4.90% | 13.60% | 52.90% | — |
| Scientific Knowledge | GPQA Diamond | No tools | 90.40% | 91.90% | 82.80% | 86.40% | 83.40% | 92.40% | 84.30% |
| Mathematics | AIME 2025 | No tools | 95.20% | 95.00% | 72.00% | 88.00% | 87.00% | 100% | 91.90% |
| Mathematics | AIME 2025 | With code execution | 99.70% | 100% | 75.70% | — | 100% | — | — |
| Multimodal Reasoning | MMMU-Pro | — | 81.20% | 81.00% | 66.70% | 68.00% | 68.00% | 79.50% | 63.00% |
| Screen Understanding | ScreenSpot-Pro | No tools unless noted | 69.10% | 72.70% | 3.90% | 11.40% | 36.20% | 86.30% | — |
| Chart Reasoning | CharXiv Reasoning | No tools | 80.30% | 81.40% | 63.70% | 69.60% | 68.50% | 82.10% | — |
| OCR | OmniDocBench 1.5 | Edit distance ↓ | 0.121 | 0.115 | 0.154 | 0.145 | 0.145 | 0.143 | — |
| Video Understanding | Video-MMMU | — | 86.90% | 87.60% | 79.20% | 83.60% | 77.80% | 85.90% | — |
| Competitive Coding | LiveCodeBench Pro | Elo ↑ | 2316 | 2439 | 1143 | 1775 | 1418 | 2393 | — |
| Agentic Coding | SWE-bench Verified | Single attempt | 78.00% | 76.20% | 60.40% | 59.60% | 77.20% | 80.00% | 50.60% |
| Agentic Tool Use | τ²-bench | — | 90.20% | 90.70% | 79.50% | 77.80% | 87.20% | — | — |
| Long-Horizon Tasks | Toolathlon | — | 49.40% | 36.40% | 3.70% | 10.50% | 38.90% | 46.30% | — |
| Multi-Step Workflows | MCP Atlas | — | 57.40% | 54.10% | 3.40% | 8.80% | 43.80% | 60.60% | — |
| Factuality | FACTS Benchmark Suite | — | 61.90% | 70.50% | 50.40% | 63.40% | 48.90% | 61.40% | 42.10% |
| Multilingual Q&A | MMMLU | — | 91.80% | 91.80% | 86.60% | 89.50% | 89.10% | 89.60% | 86.80% |
| Commonsense | Global PIQA | — | 92.80% | 93.40% | 90.20% | 91.50% | 90.10% | 91.20% | 85.60% |
| Long Context | MRCR v2 (8-needle) | 128k avg | 67.20% | 77.00% | 54.30% | 58.00% | 47.10% | 81.90% | 54.60% |
| Long Context | MRCR v2 (8-needle) | 1M pointwise | 22.10% | 26.30% | 21.00% | 16.40% | — | — | 6.10% |
Get started with our product in just a few simple steps...
Create an account on Kie.ai and request access to the Gemini 3 Flash API. After registration, generate your Gemini 3 Flash API key from the Kie.ai dashboard and associate it with the appropriate environment. This key is used for authentication and request attribution and should be stored, rotated, and managed according to standard production security practices.
Define how the Gemini 3 Flash Preview API will be deployed within your system, including expected request volume, concurrency limits, and latency targets. Configure reasoning behavior through thinking levels to balance inference speed and reasoning depth, ensuring predictable performance under production traffic.
Integrate the Gemini 3 Flash API into your application stack by defining supported input modalities and response formats. For agentic and automated systems, enable structured outputs and tool use to ensure deterministic responses and reliable interaction with downstream services. Clear input and output contracts are critical for stable multi-turn workflows.
Before full rollout, validate the Gemini 3 Flash API under realistic traffic patterns, including high concurrency, long-context usage, and multi-turn interactions. Monitor latency distribution, token utilization, and reasoning behavior across different configurations, and adjust deployment parameters to maintain stable operation as usage scales.
Gemini 3 Flash API enables near real-time reasoning across images, charts, and multi-page documents within a single context. This capability supports applications such as enterprise search, data analysis dashboards, and large-scale knowledge extraction workflows.
Gemini 3 Flash Preview API accelerates prototyping by transforming design inputs, sketches, or UI mockups into functional code or interactive previews. It significantly shortens the cycle from concept to working prototype through multimodal reasoning.
Gemini 3 Flash API supports stateful, multi-turn agentic workflows with reliable tool invocation. This enables automated assistants and backend systems to execute complex, multi-step tasks such as planning, orchestration, and conditional execution
Gemini 3 Flash Preview API delivers near Pro-level coding reasoning with Flash-class latency for developer-facing tools. It supports live code suggestions, debugging assistance, and context-aware generation within fast-moving codebases.
Gemini 3 Flash API enables rapid understanding of video content to extract semantic context and actionable insights. This is well suited for scenarios such as sports analysis, interactive systems, and real-time decision support.
Gemini 3 Flash Preview API powers context-aware content generation that adapts dynamically to multimodal inputs. It supports personalized learning experiences, adaptive content workflows, and targeted content generation at scale.
Kie.ai provides affordable Gemini 3 Flash API pricing that makes frontier-level reasoning practical for both experimentation and large-scale production. Teams can run real-time and high-throughput workloads efficiently while maintaining predictable costs, without sacrificing reasoning quality or multimodal capabilities.
Kie.ai offers comprehensive Gemini 3 Flash API documentation covering model configuration, reasoning controls, multimodal inputs, structured outputs, and deployment considerations. Clear references and well-organized guides help teams integrate quickly, reduce onboarding time, and move from prototype to production with confidence.
Kie.ai delivers 24/7 Gemini 3 Flash API service backed by production-grade infrastructure designed for continuous availability. This ensures that latency-sensitive and business-critical applications can operate reliably around the clock, even under sustained traffic and real-world load conditions.