Gemini 3.5 Flash
Google Gemini 3.5 Flash lightweight model for low-latency generation, multimodal tasks, and cost-efficient Google ecosystem workflows.
Gemini 3.5 Flash is Google’s latest lightweight model, released in May 2026 as the successor to Gemini 2.5 Flash. It pushes the Flash series further on the latency-to-quality frontier, delivering improved reasoning and multimodal understanding at the same efficient price point that made the Flash lineup popular for production deployments.
With a 1,000,000-token context window and support for multimodal inputs including text, images, and audio, Gemini 3.5 Flash handles a wide range of use cases: real-time content generation, classification and routing, multimodal data extraction, and cost-sensitive agent subtasks. It integrates through the Google Gen AI SDK and Vertex AI, with support for function calling, structured output, and search grounding.
The key improvement over Gemini 2.5 Flash is better reasoning capability at similar latency — making 3.5 Flash suitable for tasks that previously required the Pro-tier model. For teams building Google-native applications that need both speed and quality, 3.5 Flash represents the best balance in the current Gemini lineup, slotting between the older 2.5 Flash and the flagship Gemini 3.1 Pro.
| Provider | |
|---|---|
| Context Window | 1000000 |
| Pricing | Verify current Gemini API or Vertex AI pricing and availability before production use. |
| API Style | Gemini API |
| SDK | Google Gen AI SDK, Vertex AI SDK |
| MCP | Works through Google-compatible tool and agent adapters. |
| Agent | Good fit for throughput-sensitive agents, multimodal pipelines, and Google ecosystem workflows. |
| RAG | Useful for RAG systems requiring low-latency retrieval and generation with search grounding. |
| Source Freshness | recently_verified |
| Version Status | current |
| Version Boundary | Gemini 3.5 Flash (released May 19, 2026) is Google's latest lightweight model optimized for speed and cost-efficiency. It offers 1M-token context window and supports multimodal inputs, function calling, and search grounding. |
Key Facts
- Gemini 3.5 Flash was released on May 19, 2026 as the latest Flash-series lightweight model.
- Optimized for low-latency generation, multimodal inputs, and cost-sensitive workloads.
- 1M-token context window enables processing of very long documents and multimodal content.
- Supports function calling, structured output, and Google search grounding.
Best For
Not Ideal For
Capability Matrix
| Capability | Status |
|---|---|
| Multimodal | Strong |
| Low Latency | Very Strong |
| Reasoning | Supported |
| Function Calling | Supported |
| Search Grounding | Supported |
SEO
| SEO Title | Gemini 3.5 Flash API, Pricing, SDK, MCP & Agent Compatibility |
|---|---|
| Description | Gemini 3.5 Flash by Google: Google Gemini 3.5 Flash lightweight model for low-latency generation, multimodal tasks, and cost-efficient Google ecosystem workflows. |
| Canonical | /model/gemini-3-5-flash |
| Updated | 2026-05-21 |
Related Pages
- AI Model Directory
- Compatibility Matrix
- FAQ Index
- Best AI Models for Cost-Sensitive Generation
- Best AI Models for Document Workflows
- Best AI Models for Low-Latency Generation
- Best AI Models for Multimodal Workflows
- Best AI Models for Open-Weight Deployment
- Gemini 3.5 Flash vs Claude Haiku 3.5
- Gemini 3.5 Flash vs Gemini 2.5 Flash
Compare
| Comparison | Compared With |
|---|---|
| Gemini 3.5 Flash vs Claude Haiku 3.5 | Claude Haiku 3.5 |
| Gemini 3.5 Flash vs Gemini 2.5 Flash | Gemini 2.5 Flash |
Compatibility Facts
| Layer | Target | Status | Evidence | Updated |
|---|---|---|---|---|
| sdk | Google Gen AI SDK | supported | Google's js-genai repository documents @google/genai as the current TypeScript and JavaScript SDK for Gemini and Vertex AI model access. | 2026-05-21 |
FAQ
| What is Gemini 3.5 Flash? | Gemini 3.5 Flash is Google's latest lightweight model for low-latency generation, multimodal tasks, and cost-sensitive workflows with 1M-token context. Verify pricing, availability, and regional access in official Gemini API documentation. |
|---|---|
| What is Gemini 3.5 Flash best for? | Gemini 3.5 Flash is best for low-latency generation, multimodal workflow, cost-sensitive generation, Google ecosystem. |
| How should Gemini 3.5 Flash be verified before production use? | Check current pricing, availability, limits, and API behavior against the listed official and GitHub sources. This entry was updated on 2026-05-21. |
Relationship Facts
| Source | Type | Target | Confidence |
|---|---|---|---|
| gemini-3-5-flash | best_for | low-latency-generation | 0.88 |
| gemini-3-5-flash | works_with | Google Gen AI SDK | 0.9 |
Sources
| Name | Type | Citation | Last Verified |
|---|---|---|---|
| Gemini API Models | docs | Official Gemini API model documentation is the primary source for Gemini model capabilities and availability. | 2026-05-21 |
| Google Gen AI SDK | github | GitHub SDK reference for Gemini and Vertex AI TypeScript or JavaScript integration. | 2026-05-21 |
External Resources
- Gemini API Models — Official Gemini API model documentation is the primary source for Gemini model capabilities and availability.
- Google Gen AI SDK — GitHub SDK reference for Gemini and Vertex AI TypeScript or JavaScript integration.