ChatGPT Plus and Microsoft Copilot Pro both cost $20/month, and both run OpenAI's GPT models. The intelligence is largely the same family. What you are choosing between is the wrapper around it.
The Key Fact: Same Models Underneath
Through Microsoft's partnership with OpenAI, Copilot is powered by OpenAI's GPT models, the same family behind ChatGPT. Copilot's Smart mode uses the GPT-5 model, and GPT-5.5 Instant is rolling out to Copilot Chat. When people ask whether Copilot is smarter than ChatGPT, the answer is that the raw intelligence is largely shared. What differs is everything around the model.
ChatGPT is OpenAI's direct product. It gets new models first, and it owns the consumer feature set: Custom GPTs, Canvas, Advanced Data Analysis, Deep Research, and a Sora preview for video. Copilot is Microsoft's product. It embeds the model inside Word, Excel, Outlook, and Teams, and adds Researcher, an advanced reasoning agent built on OpenAI's deep research model that synthesizes across your content and the web.
So the real question is not which model is better. It is whether you want the lab's direct product or the model woven into the Office tools you already work in.
Two different Copilots
Microsoft Copilot (the consumer chat assistant covered here) is different from GitHub Copilot (the AI coding tool inside your IDE). If you are comparing coding tools, see GitHub Copilot vs Claude Code instead.
Pricing, Every Tier
| Tier | ChatGPT | Microsoft Copilot |
|---|---|---|
| Free | $0, ad-supported in the US; 10 GPT-5.5 messages / 5hr | $0; latest models off-peak, 15 image boosts/day |
| Entry paid | Go: $8/mo, ad-supported (98 countries) | No equivalent tier |
| Individual $20/mo | Plus: GPT-5.5, Sora, Custom GPTs, Deep Research | Pro: priority models, 100 image boosts/day |
| Power user | Pro $100/mo (5x Plus); Pro Max $200/mo (20x, GPT-5 Pro) | Bundled into Microsoft 365 Copilot licensing |
| Business | Business: $20/user/mo annual or $25 monthly (min 2 users) | Microsoft 365 Copilot add-on (org licensing) |
At the individual tier both are $20/month, which is why "ChatGPT Plus vs Copilot Pro" is a feature decision, not a price decision. ChatGPT spreads across more tiers: a $0 ad-supported free plan, an $8/month Go plan in 98 countries, and Pro plans at $100 and $200/month with 5x and 20x the usage of Plus. Copilot Pro's $20 is the only consumer paid tier; heavier capability comes through the separate Microsoft 365 Copilot license.
Model Lineup Behind Each
GPT-5.5 is the latest GPT model live in ChatGPT as of June 2026. On Plus, GPT-5.5 Thinking can be selected manually. GPT-5.5 scores 58.6% on SWE-Bench Pro (real GitHub issue resolution) and 82.7% on Terminal-Bench 2.0 (command-line workflows). ChatGPT gets these models first.
Copilot routes to OpenAI models too. Smart mode uses GPT-5 and decides whether to think deeply or quickly; Think Deeper takes up to 10 seconds for a more thorough answer. GPT-5.5 Instant is rolling out to Copilot Chat for fast responses. Researcher, Copilot's reasoning agent, is built on OpenAI's deep research model for exhaustive synthesis across internal content and the web.
| ChatGPT | Microsoft Copilot | |
|---|---|---|
| Latest live model | GPT-5.5 | GPT-5 (Smart mode); GPT-5.5 Instant rolling out |
| Manual deep reasoning | GPT-5.5 Thinking (Plus/Business) | Think Deeper (up to 10s) |
| Research agent | Deep Research | Researcher (OpenAI deep research model) |
| Gets new models first | Yes, OpenAI ships here first | Lags ChatGPT on rollout |
Rate Limits: How Much You Actually Get
Paid plan value comes down to how many messages you get before throttling. The two products measure usage differently. ChatGPT counts messages; Copilot Pro counts priority access and image boosts.
| Plan | Cap | After the cap |
|---|---|---|
| ChatGPT Free | 10 GPT-5.5 messages / 5 hours | Wait for reset |
| ChatGPT Plus / Go | 160 GPT-5.5 messages / 3 hours | Switches to mini model until reset |
| ChatGPT Plus Thinking | Up to 3,000 GPT-5.5 Thinking messages / week | Wait for weekly reset |
| Copilot Free | Latest models off-peak; 15 image boosts / day | Standard models during peak |
| Copilot Pro | Priority model access; 100 image boosts / day | Continued priority access |
Free Tiers Compared
Both have a $0 plan, and they are not equivalent. ChatGPT Free (ad-supported in the US) gives up to 10 messages with GPT-5.5 every 5 hours, plus Sora previews and the ability to use Custom GPTs others have built. Microsoft Copilot free gives access to the latest AI models during non-peak hours and up to 15 image-generation boosts per day, tied to your broader Microsoft account.
If you want frontier-model access without paying, ChatGPT Free gives you GPT-5.5 within its 5-hour window. If you want more daily image generation for free, Copilot's 15 boosts per day beat the free ChatGPT experience.
Where ChatGPT Plus Wins
ChatGPT gets OpenAI's newest models first and owns the richest standalone feature set. Custom GPTs let you build and share specialized assistants without code. The Sora preview generates video. Canvas and Advanced Data Analysis handle long-running, multi-step work. The 160-messages-every-3-hours allowance on Plus is a concrete, countable cap, where Copilot Pro states priority access without a published message number. If you want the leading edge of OpenAI's product and you are not anchored to Office, ChatGPT Plus is the more capable assistant.
Newest models first
GPT-5.5 and future releases land in ChatGPT before they reach Copilot.
Custom GPTs + Sora
Build specialized assistants, generate video. No Copilot equivalent.
Canvas + Data Analysis
Stronger surfaces for long-running, multi-step work outside Office.
Where Copilot Pro Wins
Copilot wins where your work already lives. It drafts in Word, builds formulas and analyzes data in Excel, summarizes threads and drafts replies in Outlook, and recaps meetings in Teams. Copilot Pro gives priority access to the latest models for quicker responses, early access to new features, and up to 100 image-generation boosts per day, more than double the free tier's 15. Researcher adds an exhaustive reasoning agent built on OpenAI's deep research model. For anyone who spends the day in Microsoft 365, that in-app integration saves more time than any standalone feature.
Inside Office apps
Drafts, formulas, email replies, and meeting recaps where you already work.
100 image boosts / day
More than double the free tier, with priority model access for faster replies.
Researcher agent
Exhaustive reasoning across your content and the web, built on OpenAI's deep research model.
Which One for You
| Your situation | Best fit | Why |
|---|---|---|
| Live in Word/Excel/Outlook/Teams | Copilot Pro | In-app drafting, formulas, email, and meeting recaps. |
| Want newest models + Sora | ChatGPT Plus | OpenAI ships to ChatGPT first; video generation. |
| Build custom assistants | ChatGPT Plus | Custom GPTs, no code needed. |
| High daily image generation | Copilot Pro | 100 image boosts/day vs ChatGPT's tighter free limits. |
| Not on Microsoft 365 | ChatGPT Plus | Copilot's main edge is the Office integration. |
| Want a cheaper paid tier | ChatGPT Go | $8/mo, ad-supported, in 98 countries. No Copilot equivalent. |
Most people should not pay for both. They run the same OpenAI model family, so the second subscription adds a different wrapper, not more intelligence. Pick ChatGPT Plus for OpenAI's direct product and earliest model access; pick Copilot Pro if your day is spent inside Office.
Frequently Asked Questions
Does Microsoft Copilot use ChatGPT?
Copilot runs on OpenAI's GPT models, the same family behind ChatGPT, through Microsoft's partnership with OpenAI. Copilot's Smart mode uses the GPT-5 model and GPT-5.5 Instant is rolling out to Copilot Chat. The underlying intelligence is largely shared; the difference is the product around the model.
Is ChatGPT Plus or Copilot Pro better in 2026?
Both cost $20/month and run OpenAI models. ChatGPT Plus for newest models (GPT-5.5), Custom GPTs, Sora, and 160 messages every 3 hours. Copilot Pro for Office integration, priority model access, and 100 image boosts per day.
How much do they cost?
ChatGPT Plus and Copilot Pro are both $20/month. ChatGPT also offers a $0 free tier (ad-supported in the US), an $8/month Go tier, and Pro tiers at $100 and $200/month. Microsoft Copilot has a $0 free tier with 15 image boosts per day.
What are the rate limits?
ChatGPT Plus allows up to 160 GPT-5.5 messages every 3 hours and up to 3,000 GPT-5.5 Thinking messages per week; after the limit, chats switch to the mini model. ChatGPT Free allows 10 GPT-5.5 messages every 5 hours. Copilot Pro gives priority model access and 100 image boosts per day.
Should I pay for both?
Usually no. They share OpenAI models. Pick ChatGPT for the lab's direct product and earliest model access, or Copilot if your work lives in Microsoft 365.
Which is better for coding?
For chat help they are comparable; GPT-5.5 scores 58.6% on SWE-Bench Pro. Microsoft Copilot (consumer) differs from GitHub Copilot (IDE coding tool). For real engineering, a dedicated agent like Codex or Claude Code beats either.
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Building With AI Instead of Chatting In It?
ChatGPT and Copilot are consumer products. If you are wiring models into an application, Morph serves open-source models at 16-bit precision with codegen-tuned kernels. See the model lineup and pricing.