ChatGPT Business Premium vs Microsoft 365 Copilot Business
$125/seat/mo vs $21/seat/mo billed annually: choose by included models and usage limits. API usage is separate.
| Compare | ChatGPT Business Premium | Microsoft 365 Copilot Business |
|---|---|---|
| Monthly USD | $125/seat/mo | $21/seat/mo billed annually |
| Included models | Codex | Microsoft 365 Copilot |
| Billing | monthly-or-yearly | annual-or-month-to-month |
| Verified · Monthly USD source · Included models source · How we verify → | ||
Microsoft 365 Copilot Business is $104/mo cheaper · Updated 2026-11-02
Which one should you pick?
Pick ChatGPT Business Premium if you want
- Codex as your main model
- coding agent
- API credits included
Pick Microsoft 365 Copilot Business if you want
- Microsoft 365 Copilot as your main model
- deep research
- office & app integrations
Microsoft 365 Copilot Business is $104/mo cheaper. Based on listed plan terms; check usage limits before upgrading.
| ChatGPT Business Premium | $125/mo $1,500 per year at the monthly rate · usage: Higher Work & Codex usage |
|---|---|
| Microsoft 365 Copilot Business | $21/mo $252 per year at the monthly rate · usage: Everyday chat included |
Listed monthly prices · How we verify →
| Attribute | ChatGPT Business Premium | Microsoft 365 Copilot Business |
|---|---|---|
| Price | $125/seat/mo | $21/seat/mo billed annually |
| Best for | Team members with heavy usage | Adding Copilot to M365 Business |
| Usage | Higher Work & Codex usage | Everyday chat included |
| Billing | monthly-or-yearly | annual-or-month-to-month |
| Audience | business | business |
| Models | Codex | Microsoft 365 Copilot |
| Key perks | Higher Work & Codex usage; No five-hour limit; $100/seat/mo API credits | Add-on only; $18 promo to Dec 2026; Researcher & Analyst |
| Context window | Not fixed per plan | Not fixed per plan |
| Deep research | Not listed | Yes |
| Coding agent | Yes | Not listed |
| Office & app integrations | Not listed | Yes |
| Team admin & SSO | Yes | Yes |
| API credits included | Yes | Not listed |
| Verified | Price 2026-11-12 · models 2026-11-02 | Price 2026-11-12 · models 2026-11-12 |
✓ listed in the provider's current plan terms · — not listed (may still be available) · Pricing data: How we verify →
Usage limits in full
- ChatGPT Business Premium
- Premium includes higher Work and Codex usage than Standard and no 5-hour usage limit; other plan limits apply. At least 2 Standard or Premium seats per workspace, including a mix. ChatGPT, ChatGPT Work and Codex access; the current seat source does not enumerate individual model SKUs. API billing is separate. Seat additions are prorated immediately; reductions take effect at renewal. Workspaces created on or after August 24, 2026 are capped at 200 paid Standard and Premium seats combined, including unassigned seats; older workspaces retain their previous limit. Includes $100/paid seat/month in claimable API credits. Business credits are pooled across paid Standard/Premium seats, capped at $500/workspace/month; annual billing issues the full year upfront, capped at $6,000, expiring at annual-cycle end. 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.
- Microsoft 365 Copilot Business
- Add-on only: requires an existing eligible Microsoft 365 Business subscription. $21/user/month with annual commitment ($252/user/year); month-to-month $25.2/user/month. $18.00/user/month first-year annual promotion runs 2026-07-01 through 2026-12-31, excludes trials and cannot be combined with other offers. Subscriptions auto-renew. Everyday chat and Copilot in apps are included; advanced experiences including Cowork, Code, Autopilot and Work IQ APIs are usage-billed beyond license fees. Teams license required for Teams features. No specific API model SKU or numerical usage quota is promised.
Everything each plan lists
Only in ChatGPT Business Premium
- +ChatGPT and ChatGPT Work
- +Codex
- +higher Work and Codex usage than Standard
- +no five-hour usage limit
- +mix, assign and reassign Standard/Premium seats
- +shared workspace and admin controls
- +no training on workspace data by default
- +$100/paid seat/month claimable API credits
Only in Microsoft 365 Copilot Business
- +Copilot in Microsoft 365 apps
- +work data grounding
- +model choice
- +Researcher and Analyst
- +enterprise data protection
- +management and analytics
- +eligible Microsoft 365 Business subscription required
How to decide
Microsoft 365 Copilot Business is $104/mo cheaper. Picking between ChatGPT Business Premium and Microsoft 365 Copilot Business 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 ChatGPT Business Premium and Microsoft 365 Copilot Business?
Microsoft 365 Copilot Business costs $21/seat/mo billed annually and ChatGPT Business Premium costs $125/seat/mo, a difference of $104/month (about $1248/year). Pricing verified 2026-11-02.
Which AI models are included with ChatGPT Business Premium vs Microsoft 365 Copilot Business?
ChatGPT Business Premium bundles Codex. Microsoft 365 Copilot Business bundles Microsoft 365 Copilot. The model lineup is usually the most important factor — pick the plan whose flagship models match the work you actually do.
Is ChatGPT Business Premium or Microsoft 365 Copilot Business better value for power users?
ChatGPT Business Premium costs $104/month more than Microsoft 365 Copilot Business. Exclusive model access is not established by the current recorded evidence. 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 ChatGPT Business Premium and Microsoft 365 Copilot Business?
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.