Microsoft 365 Pro vs ChatGPT Pro ($100)
$99.99/mo vs $100/mo: choose by included models and usage limits. API usage is separate.
| Compare | Microsoft 365 Pro | ChatGPT Pro ($100) |
|---|---|---|
| Monthly USD | $99.99/mo | $100/mo |
| Included models | Microsoft Copilot | GPT-6.1 Sol, GPT-6 Astra, GPT-6 Luna, GPT-5.6 Terra, GPT-5 Thinking Mini, Codex |
| Billing | monthly | monthly |
| Verified · Monthly USD source · Included models source · How we verify → | ||
Microsoft 365 Pro is $0.010000000000005116/mo cheaper · Updated 2026-11-02
Which one should you pick?
Pick Microsoft 365 Pro if you want
- Microsoft Copilot as your main model
- office & app integrations
- a $0.010000000000005116/mo lower bill
Pick ChatGPT Pro ($100) if you want
- GPT-6.1 Sol as your main model
- web search
- image generation
Microsoft 365 Pro is $0.010000000000005116/mo cheaper. Based on listed plan terms; check usage limits before upgrading.
| Microsoft 365 Pro | $99.99/mo $1,199.88 per year at the monthly rate · usage: Highest Cowork preview |
|---|---|
| ChatGPT Pro ($100) | $100/mo $1,200 per year at the monthly rate · usage: Pro allowance |
Listed monthly prices · How we verify →
| Attribute | Microsoft 365 Pro | ChatGPT Pro ($100) |
|---|---|---|
| Price | $99.99/mo | $100/mo |
| Best for | Highest consumer Copilot use | Pro models without Ultrafast |
| Usage | Highest Cowork preview | Pro allowance |
| Billing | monthly | monthly |
| Audience | consumer | power-user |
| Models | Microsoft Copilot | GPT-6.1 Sol, GPT-6 Astra, GPT-6 Luna, GPT-5.6 Terra, GPT-5 Thinking Mini, Codex |
| Key perks | Researcher & Analyst; 5 TB shared storage; Monthly billing only | Pro models; Codex & deep research; $100/mo API credits |
| Context window | Not fixed per plan | Not fixed per plan |
| Web search | Not listed | Yes |
| Deep research | Yes | Yes |
| Image generation | Not listed | Yes |
| Coding agent | Not listed | Yes |
| File uploads & analysis | Not listed | Yes |
| Office & app integrations | Yes | Not listed |
| API credits included | Not listed | Yes |
| Verified | Price 2026-11-02 · models 2026-11-02 | Price 2026-11-02 · models 2026-11-02 |
✓ listed in the provider's current plan terms · — not listed (may still be available) · Pricing data: How we verify →
Usage limits in full
- Microsoft 365 Pro
- For 1–6 people; 5 TB shared cloud storage. AI benefits are for the subscription owner only and cannot be shared. Chat/deep reasoning/Pages: extensive usage; Voice: highest usage; Vision: highest usage; image generation: extensive usage. Researcher: extensive usage; Analyst: extensive usage; Cowork preview: highest usage. The pricing page describes limited agentic usage for Premium versus highest for Pro. Cowork preview is US/Canada only. Limits vary by feature and system conditions; no numeric quota or API SKU entitlement is promised. Monthly billing only. Automatically renews unless canceled; offers and availability vary by market.
- ChatGPT Pro ($100)
- Any unlimited Pro access is subject to abuse guardrails. Work and Codex allowance doubled automatically; weekly GPT-6 Pro message limits are unchanged. Pro 100 does not include Ultrafast; buying credits does not unlock it. Allowances differ by tier. Includes $100/month in claimable API credits. Claim after seven paid days by linking an API organization owned under the same email. First grant is prorated; unused credits expire at billing-cycle end without rollover. Credits cover eligible API Platform usage, not Codex via API keys or extra ChatGPT/signed-in Codex limits. API usage uses purchased credits after free credits; requests fail if no balance remains. Free trials and complimentary subscriptions do not qualify. The benefit may change or end; API terms and rate limits apply.
Everything each plan lists
Only in Microsoft 365 Pro
- +Microsoft Copilot
- +Word, Excel, PowerPoint and Outlook integration
- +5 TB shared cloud storage
- +AI benefits for subscription owner only
- +Researcher and Analyst
- +Cowork preview (US and Canada)
Only in ChatGPT Pro ($100)
- +Pro models
- +Codex
- +deep research
- +image creation
- +memory and file uploads
- +$100/month claimable API credits
How to decide
Microsoft 365 Pro is $0.010000000000005116/mo cheaper. Picking between Microsoft 365 Pro and ChatGPT Pro ($100) usually comes down to three things: which models you want access to, how much you'll actually use, and what ecosystem you already live in. Still unsure? The Subscription vs API calculator tells you the break-even usage where pay-as-you-go API access would be cheaper than either subscription.
Frequently asked questions
What is the price difference between Microsoft 365 Pro and ChatGPT Pro ($100)?
Microsoft 365 Pro costs $99.99/mo and ChatGPT Pro ($100) costs $100/mo, a difference of $0.010000000000005116/month (about $0.12000000000006139/year). Pricing verified 2026-11-02.
Which AI models are included with Microsoft 365 Pro vs ChatGPT Pro ($100)?
Microsoft 365 Pro bundles Microsoft Copilot. ChatGPT Pro ($100) bundles GPT-6.1 Sol, GPT-6 Astra, GPT-6 Luna, GPT-5.6 Terra, GPT-5 Thinking Mini, Codex. The model lineup is usually the most important factor — pick the plan whose flagship models match the work you actually do.
Is Microsoft 365 Pro or ChatGPT Pro ($100) better value for power users?
ChatGPT Pro ($100) costs $0.010000000000005116/month more than Microsoft 365 Pro. The reviewed model lineup lists GPT-6.1 Sol, GPT-6 Astra, GPT-6 Luna, GPT-5.6 Terra, GPT-5 Thinking Mini, Codex in ChatGPT Pro ($100), not Microsoft 365 Pro. Compare the recorded usage, features and billing terms above; a higher price alone does not establish a higher allowance or better value.
Can I switch between Microsoft 365 Pro and ChatGPT Pro ($100)?
Check each provider's billing terms before switching. Monthly, annual and per-seat commitments can differ; cancellation usually stops renewal rather than refunding the current period.