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Telegram messages turned into OpenAI images and sent back

by Mindketn8n workflowMarketing & SEO
Newversion 1 · updated
Nodes5Apps2Like

Overview

  1. Telegram Trigger
  2. OpenAI
  3. Merge
  4. Aggregate
  5. Telegram
Telegram messages turned into OpenAI images and sent back, picture 1
‹2 / 2›

An n8n workflow for a Telegram bot that draws pictures. You write a message, an OpenAI image model turns the text into one picture, and the bot sends it back to you in the chat.

Telegram messages turned into OpenAI images and sent back is an n8n workflow in the Marketing & SEO category, listed by Mindket. It is free. This is version 1, last updated on . Download it on this page or copy its JSON, then import it into an n8n canvas. Nothing runs until you activate it in n8n.

At a glance

Runs in
  • n8n Cloud: import the file into a new workflow there
  • Your own n8n server: the same file and steps
  • Private chats: the bot answers the person who writes to it
  • Another image model: change the model in OpenAI

Platform

n8nWorkflow automation, in n8n’s cloud or on your own server
Connects 2 apps

How it works

Trigger

Telegram message

It starts when your bot receives a Telegram message, with:

  • The message’s text, used as the picture prompt
  • The sender’s user ID, for the reply

Actions

  1. The text of the message is sent to an OpenAI image model
  2. The model draws one picture from it
  3. The picture and the original message are joined and packed into one item
  4. The picture is sent back to the sender as a Telegram photo

Result

One picture in your chat, drawn from the text of your message

Integrations

What you need before you start.

Telegram

Chat

Brings each message to the trigger and sends the picture back as a photo.

NeedsA bot token from BotFather

OpenAI

Image model

Draws one picture from the text of each message.

NeedsAn OpenAI API key that can use the image models

Workflow check

Checked by Mindket on 13 Nov 2026

Steps
5 steps, starting on a Telegram event
AI
1 step calls an AI model: OpenAI
Sign-ins
Signs in to: Telegram
API keys
No API key is left in the file
Step types
Mindket’s checker reads all 5 of its step types

Read from the workflow’s file, not from a run.

About

What it is

This n8n workflow is a Telegram bot that draws pictures. You write a text message to the bot. An OpenAI image model turns that text into one picture. The bot then sends the picture back to you in the same chat. Five nodes do the work, beside seven sticky notes.

Who it suits

Marketers, designers and hobbyists who want a picture from a chat without opening an image tool. It also suits anyone learning how n8n hands a picture from one node to the next. It draws from text only, so it cannot edit a photo you send.

Who uses it, and how
IndustryWho uses itHow they use itExample
MarketingSocial media managersGet quick picture ideas for a postA manager writes “a paper boat on a blue sea” and the picture comes back in the chat.
DesignDesignersTest a look before drawing it by handA designer sends a short brief and compares the pictures it returns.
EducationTeachersMake a picture for a lesson sheetA teacher asks for a picture of the water cycle for a handout.
SoftwareDevelopersLearn the pattern of a bot that returns a fileA developer swaps the image step for another model and keeps the rest.

You need a little n8n: import a file, add two accounts and publish. Nothing in the file states a setup time.

Where to use it

Any n8n that can reach Telegram and OpenAI will run it.

  • n8n Cloud: import the file into a new workflow there
  • Your own n8n server: the same file and steps
  • Private chats: the bot answers the person who writes to it
  • Another image model: change the model in OpenAI

Setup

Download saves a zip with workflow.json and Mindket’s setup notes in your downloads folder. Two accounts cover every step.

What you need first
NeedDetail
n8nOn n8n Cloud or on a server of your own
TelegramA bot made with @BotFather, and its token
OpenAIAn API key that can use the image models
  1. In n8n, create a workflow, open its menu, choose Import from File and pick workflow.json.
  2. Add a Telegram credential with your bot token and select it in Telegram Trigger and in Telegram.
  3. Add an OpenAI credential and select it in OpenAI.
  4. Publish the workflow, open a chat with your bot and write what you want to see.

How to use it

Publish the workflow and write a short description to your bot. The picture comes back in the same chat. Put a few style words in the prompt of OpenAI for a steady look.

What to change for a different result
To changeWhere
The model, the size and the qualityThe options of OpenAI
The words that go to the modelThe prompt in OpenAI
A caption under the pictureThe additional fields of Telegram
Who may use the botA check on the sender’s id right after Telegram Trigger

Example

You write “a lighthouse at sunset, flat illustration” to your bot.

Telegram Trigger receives the message, and OpenAI sends its text as the prompt. One picture comes back as binary data. Telegram then sends it to you as a photo in the same chat.

For newcomers and experts

If you are new. n8n draws a workflow as boxes joined by lines, and each box, a node, does one job. Here the first box listens for messages, the second draws the picture and the last sends it back. Two more boxes keep the picture and the original message together, so the last box can read both.

For experts. The last node needs the sender’s id, which only the original message holds, so the picture and the message are joined first.

Where to look closer
NodeWhat it doesWhat to know
OpenAIAn OpenAI node 2.3 on the Image resource, set to gpt-image-2.6-flareIt sends message.text as the prompt and stops on an empty one
MergeA Merge node 2.1 in its default mode, AppendThe picture comes first, so the message is the second item
AggregateAn Aggregate node that packs all items into one, with Include Binaries onThe list sits under data and the picture stays attached
TelegramA Telegram node that sends a photo from binary dataIts chat is data[1].message.from.id

Good to know

Only text messages work, and the bot is open to anyone who finds it.

  • Text only: a photo or a sticker has no message.text, and the OpenAI node stops with an error because it needs a prompt that is not empty
  • Models: the original copy used an older OpenAI node. OpenAI’s deprecations page, read on 12 November 2026, says dall-e-2 and dall-e-3 were removed on 12 May 2026 and gpt-image-1 on 23 October 2026. Mindket’s copy uses node version 2.3 with gpt-image-2.6-flare, a replacement that page names
  • A repair: the trigger listened to every kind of update, and the later steps need a message. Mindket’s copy listens for messages only
  • Billing: image output of gpt-image-2.6-flare costs 30 US dollars for each million tokens on OpenAI’s model page, read on 12 November 2026. One picture uses many tokens, so watch your usage
  • An open bot: anyone who finds it can write to it and spend your OpenAI credit. Keep it private or add a check on who writes
  • Private chats: the picture goes to the person who wrote. In a group a bot cannot start a private chat
  • Your data: the text of each message goes to OpenAI, and OpenAI’s usage rules apply to the pictures you ask for
  • Not run: Mindket did not run the new OpenAI step or the hand-off through Merge and Aggregate. It read n8n’s source and OpenAI’s pages instead
  • Credentials: the JSON holds none

README and files

README

Telegram messages turned into OpenAI images and sent back

An n8n workflow for a Telegram bot that draws pictures. You write a text message to the bot, an OpenAI image model turns the text into one picture, and the bot sends the picture back to you in the chat. It is a small starter for an image bot: five nodes do the work.

What is inside

  • workflow.json: the workflow as n8n exports it, 5 nodes beside 7 sticky notes. It holds no credential.
  • README.md: these notes.

What we changed from the original copy

Mindket repaired the copy so it can draw an image today:

  • The image step was n8n's OpenAI node at version 1.3. That version offers only dall-e-2, dall-e-3 and gpt-image-1, and it uses dall-e-3 unless told otherwise. OpenAI's deprecations page, read on 12 November 2026, says the two DALL·E models were removed on 12 May 2026 and that gpt-image-1 was removed on 23 October 2026. Mindket rebuilt the step as the OpenAI node at version 2.3, set to gpt-image-2.6-flare, one of the two replacements OpenAI names.
  • The trigger listened for message updates and for all updates. The steps after it read message.text and message.from.id, which only a message has, so Mindket's copy listens for messages only.
  • The file had no settings. Mindket's copy uses the current execution order, v1.
  • The sticky notes are reworded. The two notes that sat over Merge and Aggregate had each other's names, and that is fixed.
  • No credential is inside.

Before you start

  • An n8n instance, on n8n Cloud or your own server.
  • A Telegram bot. Create it with @BotFather and keep its token.
  • An OpenAI API key.

Set it up

  1. In n8n, create a workflow, open its menu and choose Import from File. Pick workflow.json.
  2. Add a Telegram credential with your bot token and select it in Telegram Trigger and in Telegram.
  3. Add an OpenAI credential and select it in OpenAI.
  4. Publish the workflow, open a chat with your bot and write what you want to see.

How a run goes

  1. Telegram Trigger starts a run for each message the bot receives.
  2. OpenAI sends the text of the message, message.text, as the prompt of an image generation. The reply is one picture, kept as binary data in the field data.
  3. Merge puts the picture and the original message into one list, with the picture first. It runs in its default mode, Append.
  4. Aggregate packs all items into one item, with the list under data, and keeps the picture attached because Include Binaries is on.
  5. Telegram sends the picture as a photo. It reads the sender's id from the second entry of the list, data[1].message.from.id.

Change the look

  • The model, the size and the quality of the picture: the options of OpenAI.
  • The words that go to the model: the prompt in OpenAI, for example a fixed style put before message.text.
  • A caption under the picture: the additional fields of Telegram.
  • Who may use the bot: add a check on the sender's id right after Telegram Trigger.

Good to know

  • Only text messages work. A photo or a sticker has no message.text, and the OpenAI node stops with an error because it needs a prompt that is not empty.
  • Image output of gpt-image-2.6-flare is billed by tokens, at 30 US dollars for each million tokens on OpenAI's model page, read on 12 November 2026. One picture uses many tokens, so watch your usage.
  • Anyone who finds the bot can write to it and spend your OpenAI credit. Keep the bot private or add a check on who writes.
  • The picture goes to message.from.id, the person who wrote. That is the same as the chat in a private chat. In a group, a bot cannot start a private chat, so use it in private chats.
  • The text of each message goes to OpenAI, and OpenAI's usage rules apply to the pictures you ask for.
  • Mindket did not run the new OpenAI step or the Merge and Aggregate hand-off. It read n8n's source and OpenAI's pages instead.
  • The JSON holds no credential.
Files
NOTICE.md  599 B
README.md  4 KB
workflow.json  6 KB

3 files, 10 KB, downloaded as a zip.

What’s new

  • Version 1 · 2026-11-12

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