Starting April 29, 2025, Gemini 1.5 Pro and Gemini 1.5 Flash models are not available in projects that have no prior usage of these models, including new projects. For details, see Model versions and lifecycle.

Gemini 2.5 Flash

Gemini 2.5 Flash is a fast and cost-effective model that balances performance with a wide range of capabilities. It is the first Flash model to feature thinking capabilities, which lets you see the model's thinking process as it generates a response.

The Gemini 2.5 Flash model is available in two versions:

Model Version	Description	Use Case
Standard Gemini 2.5 Flash	The standard version of the model, which offers a balance of price, performance, and a wide range of capabilities, including thinking features.	Use for general-purpose tasks that require a fast, cost-effective model with strong reasoning abilities.
Gemini 2.5 Flash Image Preview	Our standard model upgraded for rapid creative workflows with image generation and conversational, multi-turn editing capabilities.	Generate interleaved text and images Multi-turn image editing in natural language Locale-aware image generation"
Gemini 2.5 Flash with Live API native audio (Preview)	A preview version with advanced, native audio functionality that includes enhanced voice quality, proactive audio responses, and affective dialog capabilities.	Use for applications that require sophisticated, natural, and emotionally aware voice interactions, such as advanced voice assistants or customer service bots.

For detailed technical information about performance benchmarks, training datasets, and our approach to safety, see the technical report and the model card for Gemini 2.5 Flash.

2.5 Flash

Note: The gemini-live-2.5-flash version of Gemini 2.5 Flash is available as a private general availability offering. Reach out to your Google account team representative to request access.

Try in Vertex AI View in Model Garden (Preview) Deploy example app

Note: To use the "Deploy example app" feature, you need a Google Cloud project with billing and Vertex AI API enabled.

Technical specifications
Model ID	`gemini-2.5-flash`
Supported inputs & outputs	Inputs: Text, Code, Images, Audio, Video Outputs: Text
Token limits	Maximum input tokens: 1,048,576 Maximum output tokens: 65,535 (default)
Capabilities	Supported Grounding with Google Search Code execution Tuning System instructions Structured output Batch prediction Function calling Count Tokens Live API Preview feature Thinking Context caching Vertex AI RAG Engine Chat completions Not supported
Usage types	Supported Provisioned Throughput Dynamic shared quota Not supported Fixed quota
Usage types	Input size limit	500 MB
	Images	Maximum images per prompt: 3,000 Maximum image size: 7 MB Supported MIME types: `image/png`, `image/jpeg`, `image/webp`
	Documents	Maximum number of files per prompt: 3,000 Maximum number of pages per file: 1,000 Maximum file size per file for the API or Cloud Storage imports: 50 MB Maximum file size per file for direct uploads through the console: 7 MB Supported MIME types: `application/pdf`, `text/plain`
	Video	Maximum video length (with audio): Approximately 45 minutes Maximum video length (without audio): Approximately 1 hour Maximum number of videos per prompt: 10 Supported MIME types: `video/x-flv`, `video/quicktime`, `video/mpeg`, `video/mpegs`, `video/mpg`, `video/mp4`, `video/webm`, `video/wmv`, `video/3gpp`
	Audio	Maximum audio length per prompt: Appropximately 8.4 hours, or up to 1 million tokens Maximum number of audio files per prompt: 1 Speech understanding for: Audio summarization, transcription, and translation Supported MIME types: `audio/x-aac`, `audio/flac`, `audio/mp3`, `audio/m4a`, `audio/mpeg`, `audio/mpga`, `audio/mp4`, `audio/opus`, `audio/pcm`, `audio/wav`, `audio/webm`
	Parameter defaults	Temperature: 0.0-2.0 (default 1.0) topP: 0.0-1.0 (default 0.95) topK: 64 (fixed) candidateCount: 1–8 (default 1)
Supported regions
	Model availability (Includes dynamic shared quota & Provisioned Throughput)	Global global United States us-central1 us-east1 us-east4 us-east5 us-south1 us-west1 us-west4 Europe europe-central2 europe-north1 europe-southwest1 europe-west1 europe-west4 europe-west8 europe-west9⁺
	ML processing	United States Multi-region Canada northamerica-northeast1 Europe Multi-region europe-west1^* Asia Pacific asia-northeast1^* asia-northeast3^* asia-south1^* asia-southeast1 australia-southeast1^*
	See Data residency for more information.
Knowledge cutoff date	January 2025
Versions	`gemini-2.5-flash` Launch stage: GA Release date: June 17, 2025 Discontinuation date: June 17, 2026 `gemini-live-2.5-flash` Launch stage: Private GA Release date: June 17, 2025 `gemini-2.5-flash-preview-05-20` Launch stage: Public preview Release date: May 20, 2025 Discontinuation date: July 15, 2025 `gemini-2.5-flash-preview-04-17` Launch stage: Public preview Release date: April 17, 2025 Discontinuation date: July 15, 2025
Security controls
Security controls	See Security controls for more information.
Pricing	See Pricing.

+ Supervised fine tuning not supported
* Available for 128K context window only

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Preview

This product or feature is a Generative AI Preview offering, subject to the "Pre-GA Offerings Terms" of the Google Cloud Service Specific Terms, as well as the Additional Terms for Generative AI Preview Products. For this Generative AI Preview offering, Customers may elect to use it for production or commercial purposes, or disclose Generated Output to third-parties, and may process personal data as outlined in the Cloud Data Processing Addendum, subject to the obligations and restrictions described in the agreement under which you access Google Cloud. Pre-GA products are available "as is" and might have limited support. For more information, see the launch stage descriptions.

Try in Vertex AI (Preview) Deploy example app

Note: To use the "Deploy example app" feature, you need a Google Cloud project with billing and Vertex AI API enabled.

Technical specifications
Model ID	`gemini-2.5-flash-image-preview`
Supported inputs & outputs	Inputs: Text, Images Outputs: Text and image
Token limits	Maximum input tokens: 32,768 Maximum output tokens: 32,768
Capabilities	Supported Count Tokens Not supported Grounding with Google Search Code execution Tuning System instructions Batch prediction Function calling Live API Preview feature Thinking Context caching Vertex AI RAG Engine Chat completions
Usage types	Supported Dynamic shared quota Not supported Fixed quota Provisioned Throughput
Input size limit	500 MB
	Images	Maximum images per prompt: 3 Maximum image size: 7 MB Maximum number of output images per prompt: 10 Supported MIME types: `image/png`, `image/jpeg`, `image/webp`
	Documents	Maximum number of files per prompt: 3 Maximum number of pages per file: 3 Maximum file size per file: 50 MB Supported MIME types: `application/pdf`, `text/plain`
	Parameter defaults	Temperature: 0.0-2.0 (default 1.0) topP: 0.0-1.0 (default 0.95) topK: 64 (fixed) candidateCount: 1–8 (default 1)
Supported regions
	Model availability	Global global
	See Data residency for more information.
Knowledge cutoff date	June 2025
Versions	`gemini-2.5-flash-image-preview` Launch stage: Public preview Release date: August 26, 2025
Security controls
Security controls	See Security controls for more information.
Pricing	See Pricing.

Live API native audio

The Gemini 2.5 Flash model with Live API native audio includes advanced audio functionality for Live API. In addition to the standard Live API features, this preview model includes the following:

Enhanced voice quality and adaptability: Live API native audio provides richer, more natural voice interactions with 30 HD voices in 24 languages.
Proactive Audio: When you enable Proactive Audio, the model responds only when relevant. It proactively generates text transcripts and audio responses only for queries directed at the device and ignores other queries.
Affective Dialog: Models using Live API native audio can understand and respond appropriately to a user's emotional expressions for more nuanced conversations.

For more information about Live API, see the standalone Live API documentation.

Try in Vertex AI

Technical specifications
Model ID	`gemini-live-2.5-flash-preview-native-audio`
Supported inputs & outputs	Inputs: Audio, Video Outputs: Audio
Token limits	Maximum input tokens: 1,048,576 Maximum output tokens: 128K (default)
Capabilities	Supported Grounding with Google Search Function calling Live API Preview feature Not supported Code execution Tuning System instructions Structured output Batch prediction Thinking Context caching Vertex AI RAG Engine Chat completions
Usage types	Supported Fixed quota Not supported Provisioned Throughput Dynamic shared quota
Input size limit	500 MB
	Video	Maximum screenshare length: Approximately 10 minutes Supported MIME types: `video/x-flv`, `video/quicktime`, `video/mpeg`, `video/mpegs`, `video/mpg`, `video/mp4`, `video/webm`, `video/wmv`, `video/3gpp`
	Audio	Maximum conversation length: Approximately 10 minutes Speech understanding for: Audio summarization, transcription, and translation Supported MIME types: `audio/x-aac`, `audio/flac`, `audio/mp3`, `audio/m4a`, `audio/mpeg`, `audio/mpga`, `audio/mp4`, `audio/opus`, `audio/pcm`, `audio/wav`, `audio/webm`
	Parameter defaults	Temperature: 0.0-2.0 (default 1.0) topP: 0.0-1.0 (default 0.95) topK: 64 (fixed) candidateCount: 1–8 (default 1)
Supported regions
	Model availability	United States us-central1
	See Data residency for more information.
Knowledge cutoff date	January 2025
Versions	`gemini-live-2.5-flash-preview-native-audio` Launch stage: Public preview Release date: June 17, 2025
Security controls
Security controls	See Security controls for more information.
Pricing	See Pricing.

Gemini 2.5 Flash Stay organized with collections Save and categorize content based on your preferences.

2.5 Flash

Image

Live API native audio

Gemini 2.5 Flash