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Gemini 2.5 Flash Preview 09-2025

Gemini 2.5 Flash Preview 09-2025 is Google's September 2025 preview of the next Gemini 2.5 Flash, scoring 54% on SWE-Bench Verified (up from 48.9%), improving agentic tool use, and producing 24% fewer output tokens with thinking enabled.

File InputImplicit CachingReasoningTool UseVision (Image)Web Search
index.ts
import { streamText } from 'ai'


const result = streamText({
  model: 'google/gemini-2.5-flash-preview-09-2025',
  prompt: 'Why is the sky blue?'
})
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Provider
Context
Latency
Throughput
Input
Output
Cache
Web Search
Per Query
Capabilities
ZDR
No Training
Release Date
Google
Legal:Terms
•
Privacy
1M
$0.30/M$2.50/M
Read:$0.03/M
Write:—
$35.00/K
+ input costs
—
09/25/2025
Google Vertex AI
Legal:Terms
•
Privacy
1M
$0.30/M$2.50/M
Read:$0.03/M
Write:—
——
09/25/2025