ChatGPT
Free tier available
- Free$0
- Go$8/mo
- Plus$20/mo
Our pickChatGPT

Microsoft Agent 365
Tier-list head-to-head. ChatGPT takes the A-tier slot — here's the breakdown.
Spec sheet
| Tier | A-tierwin | B-tier |
| Overall score | 8.8 / 10win | 7.5 / 10 |
| Free tier | Yeswin | No |
| Starting price | $0 | $15 |
| Best for | Everyone. | Enterprise IT and security teams running mixed-AI environments who need a single pane of glass over local a… |
| Last reviewed | 2026-04-24 | 2026-05-01 |
Head-to-head
Rated 1-10 on the same rubric across all 130 tools we cover.
What you'll pay
Look past the headline number -- entry-tier limits drive most cost surprises.
Free tier available
No free tier
GPT-5.5 (launched 2026-04-23; scores below are the GPT-5.4 baseline -- GPT-5.5 launch benchmarks per OpenAI are logged in Known Issues, pending third-party verification) benchmarks — Microsoft Agent 365 has no published benchmarks
| Benchmark | Description | Score |
|---|---|---|
| MMLU | Knowledge across 57 subjects | 91% |
| GPQA Diamond | Graduate-level science questions | 92.8% |
| AIME 2024 | Competition math problems | 83.3% |
| HumanEval | Python code generation | 95% |
| SWE-bench | Real GitHub issue fixing | 72% |
| ARC-AGI | Abstract reasoning puzzles | 73.3% |
The decision
Use-case anchors and category strengths, side by side.
Everyone. Seriously -- if you're new to AI or want the most complete all-in-one package, ChatGPT is the default recommendation.
Visit ChatGPTEnterprise IT and security teams running mixed-AI environments who need a single pane of glass over local agents (OpenClaw, Copilot CLI, Claude Code), Copilot Studio agents, and cloud agents in AWS Bedrock / Google Cloud / Azure. Especially valuable for orgs already on Microsoft 365 E5/E7 where the bundled tier removes the per-seat math.
Visit Microsoft Agent 365Bottom line
ChatGPT is the clear winner: 8.8/10 (A-tier) versus 7.5/10 (B-tier). Microsoft Agent 365 isn't a bad tool, but on every category that drives the overall score, ChatGPT comes out ahead. The tier gap is repeatable -- not methodology noise -- and the day-to-day experience reflects it.
On pricing, ChatGPT starts free while Microsoft Agent 365 requires a paid plan from day one ($15+). If you're testing the waters or running an occasional workload, that gap matters more than the score differential. ChatGPT starts at $0; Microsoft Agent 365 starts at $15. Compare what each entry tier actually unlocks before you compare list prices -- the limits matter more than the headline number.
By use case: pick ChatGPT when everyone. Pick Microsoft Agent 365 when enterprise it and security teams running mixed-ai environments who need a single pane of glass over local agents (openclaw, copilot cli, claude code), copilot studio agents, and cloud agents in aws bedrock / google cloud / azure. The two tools aren't fighting for the same person -- they're aiming at adjacent jobs that occasionally overlap. If you're squarely in ChatGPT's lane, the tier-list ranking and the use-case fit point the same direction; if you're in Microsoft Agent 365's lane, the score gap matters less than the fit.
Bottom line: ChatGPT is the better tool for most people right now. Pick Microsoft Agent 365 only when enterprise it and security teams running mixed-ai environments who need a single pane of glass over local agents (openclaw, copilot cli, claude code), copilot studio agents, and cloud agents in aws bedrock / google cloud / azure -- that's its lane, and inside that lane it still earns its place.
Keep digging
Full ChatGPT review
Tier A · 8.8/10
Full Microsoft Agent 365 review
Tier B · 7.5/10
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Built from our daily AI-tool sweep, last touched May 1, 2026. Honest tier-list reviews — no affiliate-link pieces disguised as advice. See the rubric or how we review.