> ## Documentation Index
> Fetch the complete documentation index at: https://docs.yingtu.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Gemini 2.5 Flash Image on YingTu

> Use the original Nano Banana model for low-cost 1K generation, conversational editing, and existing Gemini image integrations.

`gemini-2.5-flash-image` is the original stable Nano Banana model. On YingTu,
it is the lowest-priced option in the family and keeps the established Gemini
native request shape for text-to-image and image editing.

Google positions the upstream model for high-volume creation, conversational
editing, and low-latency visual workflows. Its stable model ID replaced the
deprecated `gemini-2.5-flash-image-preview` ID. See Google's current
[model page](https://ai.google.dev/gemini-api/docs/models/gemini-2.5-flash-image).

<Info>
  Use the exact stable ID in the URL. Do not use the old preview ID or send
  `imageSize`; YingTu treats this model as an approximately 1K output tier.
</Info>

## What YingTu verified

A September 2, 2026 live run completed synchronous generation, asynchronous
generation, and inline image editing. The tested 1:1 outputs were 1024 × 1024
PNG files. One synchronous response returned a text part before the image,
confirming that clients must scan every response part.

## Compare with Nano Banana 2 Lite

| Decision         | Gemini 2.5 Flash Image                                  | Gemini 3.1 Flash Lite Image                                     |
| ---------------- | ------------------------------------------------------- | --------------------------------------------------------------- |
| YingTu price     | USD 0.020 per request                                   | USD 0.025 per request                                           |
| Output tier      | Approximately 1K; omit `imageSize`                      | 1K; may send `imageSize: "1K"`                                  |
| Product position | Original stable integration                             | Current efficiency specialist                                   |
| Choose it when   | Lowest family price or existing 2.5 integration matters | A new high-volume 1K integration should target the newer family |

This is not a quality benchmark. The recommendation combines current upstream
positioning, YingTu price, and verified API behavior; evaluate visual quality
with your own prompts and source images.

<CardGroup cols={2}>
  <Card title="Configure this model" icon="sliders-horizontal" href="/en/models/image/nano-banana/gemini-2.5-flash-image/parameters">
    Use the correct fixed-resolution request fields.
  </Card>

  <Card title="Compare all four" icon="columns-3" href="/en/models/image/nano-banana/comparison">
    Review price, resolution, lifecycle, and migration tradeoffs.
  </Card>
</CardGroup>