Claude and ChatGPT for marketers: tools, workflows and limits

Claude and ChatGPT can plan campaigns, draft copy and build reports from your ad and CRM data, if you review before anything goes live.

Picks: 8; ranked

Both assistants work for marketing, and the difference is the tooling around them. Claude has an Anthropic-built marketing plugin with commands for content drafts, campaign plans, brand reviews, competitor briefs and performance reports. ChatGPT Business covers writing, campaign analysis and market research, and connects to tools like Canva and HubSpot. Business and Team plans do not train on your data by default, which matters before you upload customer lists or unreleased campaigns.

Good for

Content and brand marketers drafting posts, emails and landing pages
Demand gen and paid teams reporting on Google Ads, Meta Ads and HubSpot
Marketing leads planning campaigns and calendars
Solo marketers who want one assistant connected to their stack

Claude

Claude's marketing plugin turns content, campaign and reporting jobs into commands.

Plan: Team for a marketing group: Standard seat $20 per seat per month billed annually or $25 monthly, for 2 to 150 seats, as of November 2026. Pro ($17 a month billed annually, $20 monthly) suits one person.

What it can do

Draft blog posts, social posts, email newsletters, landing pages, press releases and case studies with /draft-content
Build a campaign brief with objectives, channels, a content calendar and success metrics with /campaign-plan
Check copy against your voice, style guide and messaging pillars with /brand-review
Research competitors and compare positioning with /competitive-brief
Write a performance report with metrics, trends and recommendations with /performance-report
Run an SEO audit and design multi-email sequences with /seo-audit and /email-sequence
Connect Slack, Canva, Figma, HubSpot, Amplitude, Notion, Ahrefs, Similarweb, Klaviyo and Supermetrics

Limits

Anthropic calls the plugin a generic starting point. Put your brand voice and personas in its local settings file, or you get a generic review.
Plugins are built for Cowork and also work in Claude Code.
Team plans do not train on your content by default. Anthropic lists training as opt-out on individual plans.

Plugs to turn on

HubSpot: HubSpot's own server: read and update CRM records, activities and marketing content.
Canva MCP: Create, edit and export designs and assets from Canva.
@ahrefs/mcp: Ahrefs' own server for SEO data. Needs an API key.
Google Analytics: Google's own server for GA4 reports and property settings.
copywriting: Writes and rewrites marketing copy for homepages, landing pages and pricing pages.
marketing-plan: Builds a full marketing plan for a client or your own product.

ChatGPT

ChatGPT Business handles drafting, campaign analysis and research, and connects to Canva and HubSpot.

Plan: ChatGPT Business standard seat: $20 per user per month billed annually or $25 monthly, from 2 seats, as of November 2026 (Premium seats are $100 annual or $125 monthly). Plus ($20 a month) is for one person.

What it can do

Write, edit and analyse campaign results from an uploaded spreadsheet
Summarise market research reports and competitor material
Combine Google Ads, LinkedIn and HubSpot numbers into one view, using a prompt OpenAI suggests
Produce on-brand campaigns with Canvas, custom GPTs and image generation, connected to Canva and HubSpot
Use deep research, web search and agent mode with data from Box, HubSpot and more
Connect Google Drive for answers based on your files

Limits

HubSpot writes in ChatGPT stop at 10 records per request, and ChatGPT cannot delete HubSpot records.
Business plans do not train on your data by default. On Free, Go, Plus and Pro, chats can be used for training unless you opt out.

Plugs to turn on

HubSpot: Connect HubSpot on any plan to read contacts and deals. Set writes to need approval.
Canva MCP: Design assets from a chat. Works in ChatGPT and Claude.

Plugs worth turning on

Connect your CRM and analytics first, then the ad platforms. For skills that write copy, plan campaigns and run SEO, see the marketing skills ranking.

Plan a launch campaign with Claude's marketing plugin

Claude

Install the plugin

In Claude Code, run:

claude plugin marketplace add anthropics/knowledge-work-plugins
claude plugin install marketing@knowledge-work-plugins

In Cowork, install it from claude.com/plugins.

2
Set your brand voice
Add your voice, style guide and personas to the plugin's local settings file. Without it, Claude asks for your guidelines or gives a generic review.

Brief the campaign

Give a goal, audience, timeline and budget.

Prompt

/campaign-plan
Goal: 500 signups for our new reporting feature
Audience: operations leads at mid-market logistics firms
Timeline: 6 weeks
Budget: $20,000

4
Review the brief
Check channel choices and the calendar against your real capacity. Then run /brand-review on each draft.

Build a weekly performance report from your ad and analytics data

1
Connect the sources
Add the connectors you use. Read access is enough for reporting.
Uses Google Analytics, Google Ads, HubSpot

Ask for one view

Name the date range and the metrics. Ask for gaps to be listed rather than filled in.

Prompt

Combine last week's Google Ads spend and clicks, GA4 sessions and conversions, and HubSpot new leads by source into one table. Rank campaigns by cost per lead. List any metric you could not pull.

3
Ask what changed
Ask for the three biggest week-on-week changes with a likely cause for each, labelled as a guess.
4
Spot-check
Compare two numbers with the platform dashboards before you send the report.

Draft on-brand content in ChatGPT and finish it in Canva

ChatGPT

1
Give it your brand rules
Upload your style guide to a project or custom GPT so each draft follows it.

Draft from a brief

Include the audience, one key message and the call to action.

Prompt

Write a 150-word LinkedIn post and three subject lines for our October webinar. Audience: finance managers. One message: close the books two days faster. Match the attached style guide.

3
Make the visual
Connect Canva and ask for a post design using your brand kit.
Uses Canva
4
Edit and approve
Edit the draft yourself, then publish. Nothing should go out under your name unread.

Verdict

Our advice: pick Claude Team if you want ready-made marketing commands, ChatGPT Business if your team already works there, and connect HubSpot and analytics first. Keep ad platforms on read access until you trust the output.

Our pick: HubSpot

Our advice: start read-only, review every draft, and use the marketing skills ranking to add what your team does most.

Best for

Campaign plans and content calendars
Weekly reports across ads, analytics and CRM
First drafts you will edit

Skip it if

You would publish or launch without reading it
You cannot upload customer lists to a third party

Questions

Is ChatGPT good for marketing?

Yes for drafting, editing, campaign analysis and market research. OpenAI shows ChatGPT Business handling these and connecting to Canva and HubSpot.

Can Claude do marketing?

Yes. Anthropic publishes a marketing plugin with commands for content, campaigns, brand review, competitor briefs, performance reports, SEO audits and email sequences.

What is the best Claude skill for marketing?

See the marketing skills ranking, which lists skills for copywriting, content strategy, customer research and ads.

Can ChatGPT or Claude change my ad campaigns?

Some connectors can. The Meta Ads server covers campaign management, and the Google Ads server has write tools for assets and labels. Use read access for reporting.

Can they connect to HubSpot?

Yes, in both. In ChatGPT, writes stop at 10 records per request and it cannot delete records. See the HubSpot page.

Will my customer data train the model?

Not on ChatGPT Business or Claude Team by default. Anthropic lists training as opt-out on individual plans, and OpenAI says Free, Go, Plus and Pro chats can be used for training unless you opt out.

How much does it cost for a marketing team?

ChatGPT Business Standard seats and Claude Team Standard seats both cost $20 per user per month billed annually or $25 monthly, as of November 2026. Both also sell Premium seats at $100 annual or $125 monthly. ChatGPT Business starts at 2 seats and Claude Team is for 2 to 150 seats.

ChatGPT or Claude for marketing?

Our advice: pick by the tools around them. Anthropic publishes a marketing plugin with commands and skills for Claude. OpenAI shows Canvas, custom GPTs, image generation and a Canva connection for ChatGPT Business, and both connect to HubSpot and Canva.

Sources

Docs, issue trackers and discussions this page is built from.

Show all 7

Marketing plugin · github.com
ChatGPT for sales and marketing · chatgpt.com
Claude pricing · claude.com
Knowledge Work Plugins · github.com
ChatGPT plans and pricing · chatgpt.com
ChatGPT data controls · help.openai.com
Connect your HubSpot account to ChatGPT · knowledge.hubspot.com