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Gemini 2.5 Flash Preview 09-2025 Model Specs, Costs & Benchmarks (October 2025)

Gemini 2.5 Flash Preview 09-2025, developed by Google, features a context window of 1M tokens. The model costs $0.30 per million tokens for input and $2.50 per million tokens for output. It was released on September 25, 2025, and has achieved impressive scores in various benchmarks.
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Overview

Gemini 2.5 Flash Preview 09-2025Gemini 2.5 Flash Preview 09-2025
Model Provider
The organization behind this AI's development
Google logoGoogle
Input Context Window
Maximum input tokens this model can process at once
1M
tokens
Output Token Limit
Maximum output tokens this model can generate at once
65.5K
tokens
Release Date
When this model first became publicly available
September 25th, 2025

Pricing

Gemini 2.5 Flash Preview 09-2025Gemini 2.5 Flash Preview 09-2025
Input Token Cost
Cost per million input tokens
$0.30
per million tokens
Output Token Cost
Cost per million output tokens
$2.50
per million tokens

Capabilities & Features

Gemini 2.5 Flash Preview 09-2025Gemini 2.5 Flash Preview 09-2025
Input Types
Supported input formats
imagefiletext
Output Types
Supported output formats
text
Tokenizer
Text encoding system
Gemini
Key Features
Advanced capabilities
✓ Function Calling✓ Structured Output✓ Reasoning Mode

Benchmarks

Gemini 2.5 Flash Preview 09-2025Gemini 2.5 Flash Preview 09-2025
MMLU
Measures knowledge across 57 subjects like law, math, history, and science
Not available
MMMU
Measures understanding of combined text and images across various domains
Not available
HellaSwag
Measures common sense reasoning by having models complete sentences about everyday situations
Not available

Compare This Model

See how Gemini 2.5 Flash Preview 09-2025 compares with other top models