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Google: Gemini 2.5 Flash Preview 09-2025

Gemini 2.5 Flash Preview September 2025 Checkpoint is Google's state-of-the-art workhorse model, specifically designed for advanced reasoning, coding, mathematics, and scientific tasks. It includes built-in "thinking" capabilities, enabling it to provide responses with greater accuracy and nuanced context handling. Additionally, Gemini 2.5 Flash is configurable through the "max tokens for reasoning" parameter, as described in the documentation (https://openrouter.ai/docs/use-cases/reasoning-tokens#max-tokens-for-reasoning).

Context Length:1.0M tokens
Pricing:$0.30M
Created:September 25, 2025

Model Information

1.0M
September 25, 2025
Gemini
text+image->text
imagefiletext
text

Pricing Information

Prompt
$0.30M
per 1M tokens
Completion
$2.50M
per 1M tokens
Image
$1.238K
per image

Supported Parameters

include_reasoningmax_tokensreasoningresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_p

Common Use Cases

Multimodal Tasks

  • • Image analysis and description
  • • Visual question answering
  • • Document understanding
  • • Content moderation

Image Generation

  • • Creative artwork generation
  • • Product visualization
  • • Marketing materials
  • • Concept art and design

General Applications

  • • Chatbots and virtual assistants
  • • Educational content creation
  • • Research and analysis
  • • Automation and workflow

Frequently Asked Questions

What is the context length of this model?

This model has a context length of 1.0M tokens, which means it can process and remember up to 1.0M tokens of text in a single conversation or request.

How much does it cost to use this model?

Prompt tokens cost $0.30M/1M tokens and completion tokens cost $2.50M/1M tokens.

What modalities does this model support?

This model supports text+image->text modality, accepting image and file and textas input and producing text as output.

When was this model created?

This model was created on September 25, 2025.

Google: Gemini 2.5 Flash Preview 09-2025 - AI Model Details & Pricing | Zenspeed | Zenspeed