Gemini 2.5 Flash Preview (09-2025)

September preview of Gemini 2.5 Flash with caching.

gemini-2.5-flash-preview-09-2025
STABLEModel DeactivatedGet StartedView uptime
1,048,576 context
Released September 25, 2025
Starting at $0.30/M input tokens
Starting at $2.50/M output tokens
Streaming
Vision
Tools
Reasoning
JSON Output
No ratings yetSign in to rate

All Providers for Gemini 2.5 Flash Preview (09-2025)

LLM Gateway routes requests to the best providers that are able to handle your prompt size and parameters.

Google AI Studio
Context: 1.0M
Deactivated since Jan 17, 2026
Input
$0.3
/M tokens
Cache Read
$0.03
/M tokens
Output
$2.5
/M tokens
Get Started
Google Vertex AI
Context: 1.0M
Deactivated since Jan 27, 2026
Input
$0.3
/M tokens
Cache Read
$0.03
/M tokens
Output
$2.5
/M tokens
Get Started

Frequently asked questions

What is Gemini 2.5 Flash Preview (09-2025)?

September preview of Gemini 2.5 Flash with caching. You can access it through LLM Gateway's OpenAI-compatible API with automatic provider routing, fallback, and cost analytics.

How much does Gemini 2.5 Flash Preview (09-2025) cost?

Pricing for Gemini 2.5 Flash Preview (09-2025) on LLM Gateway starts at $0.30 per million input tokens and $2.50 per million output tokens, depending on the provider. The pricing table above always reflects the current per-provider rates.

What is the context length of Gemini 2.5 Flash Preview (09-2025)?

Gemini 2.5 Flash Preview (09-2025) supports a context window of up to 1,048,576 tokens on its largest provider deployment.

Which providers serve Gemini 2.5 Flash Preview (09-2025)?

Gemini 2.5 Flash Preview (09-2025) is served by Google AI Studio, Google Vertex AI through LLM Gateway. Requests are automatically routed to the best available provider, with fallback when a provider has issues.

Does Gemini 2.5 Flash Preview (09-2025) support tool calling and structured outputs?

Yes. Gemini 2.5 Flash Preview (09-2025) supports both tool (function) calling and structured JSON outputs through LLM Gateway.

When was Gemini 2.5 Flash Preview (09-2025) released?

Gemini 2.5 Flash Preview (09-2025) was released on September 25, 2025.