Automate Instagram carousel creation with GPT-5, Nano Banana, and Blotato

Open on n8n.io

$20/month : Unlimited workflows

2500 executions/month

Try free

THE #1 IN WEB SCRAPING

Scrape any website without limits

Try free

HOSTINGER

Early Deal
DISCOUNT 20%

Self-hosted n8n

Unlimited workflows - from $4.99/mo

Try free

#1 hub for scraping, AI & automation

6000+ actors - $5 credits/mo

Try free

Important notice

This workflow is provided as-is. Please review and test before using in production.

1. Workflow Overview

Instagram Carousel & Caption Generator on Autopilot (GPT 5 + Nano Banana + Blotato + Google Sheets) Description Watch the full step by step tutorial on YouTube: https://youtu.be/id22R7iBTjo ![au...

Best for

Content Creation automation workflows
Multimodal AI automation workflows
advanced n8n builders looking for reusable templates

Tools used

@n8n/n8n-nodes-langchain.chattrigger, @n8n/n8n-nodes-langchain.agent, @n8n/n8n-nodes-langchain.lmchatopenai, @n8n/n8n-nodes-langchain.outputparserstructured, n8n-nodes-base.splitout, n8n-nodes-base.httprequest, @blotato/n8n-nodes-blotato.blotato, n8n-nodes-base.code

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by Automate With Marc.

Original n8n.io source

1.1 Workflow description

Title: Automate Instagram carousel creation with GPT-5, Nano Banana, and Blotato
Workflow name: Automate Instagram carousel creation with GPT-5, Nano Banana, and Blotato

🎨 Instagram Carousel & Caption Generator on Autopilot (GPT-5 + Nano Banana + Blotato + Google Sheets)

Description

Watch the full step-by-step tutorial on YouTube: https://youtu.be/id22R7iBTjo

Disclaimer (self-hosted requirement): This template assumes you have valid API credentials for OpenAI, Wavespeed/Nano Banana, Blotato, and Google. If using n8n Self-Hosted, ensure HTTPS access and credentials are set in your instance.

How It Works

Chat Trigger – Receive a topic/idea (e.g. “5 best podcast tips”).

Image Prompt Generator (GPT-5) – Creates 5 prompts using the “Hook → Problem → Insight → Solution → CTA” framework.

Structured Output Parser – Formats output into a JSON array.

Generate Images (Nano Banana) – Converts prompts into high-quality visuals.

Wait for Render – Ensures image generation completes.

Fetch Rendered Image URLs – Retrieves image links.

Upload to Blotato – Hosts and prepares images for posting.

Collect Media URLs – Gathers all uploaded image URLs.

Log to Google Sheets – Stores image URLs + timestamps for tracking.

Caption Generator (GPT-5) – Writes an SEO-friendly caption.

Merge Caption + Images – Combines data.

Post Carousel (Blotato) – Publishes directly to Instagram.

Step-by-Step Setup Instructions

Prerequisites

n8n (Cloud or Self-Hosted)

OpenAI API Key (GPT-5)

Wavespeed API Key (Nano Banana)

Blotato API credentials (connected to Instagram)

Google Sheets OAuth credentials

Add Credentials in n8n

OpenAI: Settings → Credentials → Add “OpenAI API”

Wavespeed: HTTP Header Auth (e.g. Authorization: Bearer <API_KEY>)

Blotato: Add “Blotato API”

Google Sheets: Add “Google Sheets OAuth2 API”

Configure & Test

Run with an idea like “Top 5 design hacks”.

Check generated images, caption, and logged sheet entry.

Confirm posting works via Blotato.

Optional

Add a Schedule Trigger for weekly automation.

Insert a Slack approval loop before posting.

Customization Guide

✏️ Change design style: Modify adjectives in the Image Prompt Generator.

📑 Adjust number of slides: Change Split node loop count.

💬 Tone of captions: Edit Caption Generator’s system prompt.

⏱️ Adjust render wait time: If image generation takes longer, increase the Wait node duration from 30 seconds to 60 seconds or more.

🗂️ Log extra data: Add columns in Google Sheets for campaign or topic.

🔁 Swap posting tool: Replace Blotato with your scheduler or email node.

Requirements

OpenAI API key (GPT-5 or compatible)

Wavespeed API key (Nano Banana)

Blotato API credentials

Google Sheets OAuth credentials

n8n account (Cloud or Self-Hosted)

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - When chat message received

Type / Role: @n8n/n8n-nodes-langchain.chatTrigger - chatTrigger
Config choices: Version 1.3

Block 2 - Image Prompt Generator

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 2.2

Block 3 - OpenAI Chat Model

Type / Role: @n8n/n8n-nodes-langchain.lmChatOpenAi - lmChatOpenAi
Config choices: Version 1.2

Block 4 - Structured Output Parser

Type / Role: @n8n/n8n-nodes-langchain.outputParserStructured - outputParserStructured
Config choices: Version 1.3

Block 5 - Split Out

Type / Role: n8n-nodes-base.splitOut - splitOut
Config choices: Version 1

Block 6 - Nano Banana

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 7 - Get Nano Banana Image Result

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 8 - Upload media

Type / Role: @blotato/n8n-nodes-blotato.blotato - blotato
Config choices: Version 2

Block 9 - Code

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 10 - Append row in sheet

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.7

Block 11 - Caption Generator

Type / Role: @n8n/n8n-nodes-langchain.openAi - openAi
Config choices: Version 1.8

Block 12 - Post to Instagram

Type / Role: @blotato/n8n-nodes-blotato.blotato - blotato
Config choices: Version 2

Block 13 - Sticky Note

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 14 - Sticky Note1

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 15 - Sticky Note2

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 16 - Sticky Note3

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 17 - Sticky Note4

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 18 - Sticky Note5

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 19 - Wait For Render

Type / Role: n8n-nodes-base.wait - wait
Config choices: Version 1.1

Block 20 - Merge Caption + Images

Type / Role: n8n-nodes-base.merge - merge
Config choices: Version 3.2

3. Summary Table

Workflow	Automate Instagram carousel creation with GPT-5, Nano Banana, and Blotato
Complexity	advanced
Nodes	20
Categories	Content Creation, Multimodal AI
Author	Automate With Marc
Published	23 Sept 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/8877/8877.json as the source template for this automation.
2. Import the template into n8n

Open n8n, import the downloaded JSON, and review each node before activating the workflow.
3. Configure credentials and variables

Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.
4. Test with sample data

Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.
5. Activate and monitor

Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Download workflow JSON Original n8n.io source Content Creation workflows Multimodal AI workflows

Frequently asked questions

What does Automate Instagram carousel creation with GPT-5, Nano Banana, and Blotato do?

Instagram Carousel & Caption Generator on Autopilot (GPT 5 + Nano Banana + Blotato + Google Sheets) Description Watch the full step by step tutorial on YouTube: https://youtu.be/id22R7iBTjo ![au...

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your Content Creation, Multimodal AI use case.

Automate With Marc

50 workflows

Nodes

@n8n/n8n-nodes-langchain.chattrigger @n8n/n8n-nodes-langchain.agent @n8n/n8n-nodes-langchain.lmchatopenai @n8n/n8n-nodes-langchain.outputparserstructured n8n-nodes-base.splitout n8n-nodes-base.httprequest @blotato/n8n-nodes-blotato.blotato n8n-nodes-base.code

Complexity

advanced

Published 23 Sept 2025

Likes 0

View on n8n.io Download Workflow

Install path: /data/workflows/8877/8877.json

Share Your Workflow

Have a useful automation to share? Publish it and help the community.

Submit Your Template How to Submit

Related Workflows

Send daily LinkedIn post drafts with Tavily, Groq Llama 3.3 and Gmail

## Quick overview This workflow runs daily at 8 AM to rotate through a topic list, research it with Tavily web search, generate a LinkedIn post and image prompt with Groq (Llama 3.3 70B), create a Pollinations.ai image URL, and email you the post with the image attached via Gmail. ## How it works 1. Runs every day at 8:00 AM on a schedule. 2. Selects today’s topic from a rotating list based on the day of the year. 3. Searches the web with Tavily to fetch up-to-date results for the selected topic. 4. Uses a Groq-hosted Llama model to write a LinkedIn post and a matching image prompt grounded in the Tavily results. 5. Builds a Pollinations.ai image generation URL from the image prompt and downloads the generated image file. 6. Emails the post text with the image attached via Gmail, and sends a text-only fallback email if image generation or download fails. ## Setup 1. Add a Groq API credential to the Groq Chat Model node. 2. Create a Tavily API key and configure HTTP Header Auth with `Authorization: Bearer <YOUR_TAVILY_KEY>` for the Tavily Search request. 3. Connect a Gmail OAuth2 credential and update the recipient email address in both Gmail send steps. 4. Edit the topic list in the topic-selection code step if you want different rotating themes. ## Requirements - Groq API key (free tier available) - Tavily API key (free tier — 1,000 searches/month) - Gmail account (OAuth2) ## Customization - Edit the topic list inside the "Pick Today's Topic" code node to change what subjects the post rotates through. - Change the Groq model in the "Groq Chat Model" node if you want a different LLM (e.g. a smaller/faster or larger Groq model). - Adjust the schedule trigger if you want a different posting time, or swap the Gmail "send to" address to deliver the draft to someone else for review. ## Additional info This workflow emails you a draft for manual review before posting — it does not post to LinkedIn automatically. If image generation fails, a text-only fallback email is sent instead so you never miss the post text.

View

Generate VEO3 videos from form ideas with ChatGPT, fal.ai, Drive and Gmail

## Quick overview This workflow collects a video idea via an n8n Form, uses OpenAI to turn it into an optimized prompt, generates an 8-second VEO3 video with native audio via fal.ai, saves the MP4 to Google Drive, and emails the Drive link via Gmail. ## How it works 1. Receives a submission from an n8n Form with the requester’s email, a plain-English video idea, and a selected style. 2. Uses OpenAI (via an AI Agent) to convert the idea and style into a structured VEO3 title and detailed prompt returned as JSON. 3. Cleans and parses the AI JSON, creates a filename-safe title, and sets the generation parameters to 16:9 and 8 seconds. 4. Submits the prompt to fal.ai’s queue endpoint for the fal-ai/veo3 model and gets a request ID. 5. Polls fal.ai every 30 seconds until the job status returns COMPLETED. 6. Retrieves the final MP4 URL from fal.ai, downloads the video, uploads it to Google Drive, and emails the Google Drive web link to the requester via Gmail. ## Setup 1. Create a fal.ai account, generate an API key, and replace `YOUR_FAL_AI_API_KEY` in the fal.ai HTTP request headers. 2. Add an OpenAI API credential in the OpenAI Chat Model node and select the model you want to use. 3. Connect Google Drive OAuth2 and replace `YOUR_GDRIVE_FOLDER_ID` with the target folder ID where videos should be saved. 4. Connect Gmail OAuth2 for sending emails, then activate the workflow and use the Form URL (path `veo3-video-generator`) to submit requests.

View

Generate presentation decks from prompts with Encelade

## Quick overview This workflow starts a presentation generation job in Encelade from a prompt and outline hints, polls Encelade for completion, and outputs the finished deck link (or stops with an error if generation fails). ## How it works 1. Starts when you manually execute the workflow in n8n. 2. Sends the topic, slide count, audience, tone, theme settings, and outline hints to Encelade to generate a 6-slide presentation. 3. Waits 20 seconds and then checks the Encelade session status using the returned session ID. 4. If the session phase is not finished, it keeps waiting and rechecking until the phase changes. 5. When the phase is "done", it returns the generated deck link and project PID. 6. When the phase is "failed", it stops the workflow and raises an error with the failure details. ## Setup 1. Install and configure Encelade credentials in n8n for the Encelade node. 2. Update the generation inputs (topic, page count, outline hints, audience/tone, theme mode, and media provider) to match the deck you want to create. 3. Ensure the workflow has enough time to complete by adjusting the 20-second wait interval if your Encelade generations typically take longer.

View

Need Custom Automation?

Get help designing a custom n8n workflow that connects your stack and fits your process.

Automate Instagram carousel creation with GPT-5, Nano Banana, and Blotato

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

🎨 Instagram Carousel & Caption Generator on Autopilot (GPT-5 + Nano Banana + Blotato + Google Sheets)

Description

How It Works

Step-by-Step Setup Instructions

Customization Guide

Requirements

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - When chat message received

Block 2 - Image Prompt Generator

Block 3 - OpenAI Chat Model

Block 4 - Structured Output Parser

Block 5 - Split Out

Block 6 - Nano Banana

Block 7 - Get Nano Banana Image Result

Block 8 - Upload media

Block 9 - Code

Block 10 - Append row in sheet

Block 11 - Caption Generator

Block 12 - Post to Instagram

Block 13 - Sticky Note

Block 14 - Sticky Note1

Block 15 - Sticky Note2

Block 16 - Sticky Note3

Block 17 - Sticky Note4

Block 18 - Sticky Note5

Block 19 - Wait For Render

Block 20 - Merge Caption + Images

3. Summary Table

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

2. Import the template into n8n

3. Configure credentials and variables

4. Test with sample data

5. Activate and monitor

5. General Notes & Resources

Frequently asked questions