Stage 3: independently tested.
The rule that placed itSomeone other than the maker has tested it: an independent benchmark, a peer-reviewed paper, or a hands-on test by a trusted outlet.
The evidenceOn OSWorld 2.0, 108 long computer workflows that take a person about 1.6 hours each, the best AI agent fully completed only 20.6% of tasks. OSWorld 2.0, arXiv 2606.29537, Jun 28, 2026.
A stage says how far the evidence has got. It is not a rating of the AI and not advice.
- 1ClaimedEvidence found
- 2LaunchedEvidence found
- 3Independently testedPlaced here
- 4Tested with real peopleNo evidence yet
- 5Regulator-clearedNo approval process exists
- 6Widely used with a verified recordNo evidence yet
Everything we found.
In ladder order, newest first within each kind. Makers' own claims are labeled as theirs.
What the makers claim
- OpenAI (company-reported)
“GPT‑5.4 achieves a state-of-the-art 75.0% success rate”
OpenAI, Introducing GPT-5.4 · Mar 5, 2026 · company-reported
What has launched
- ChatGPT agent
ChatGPT agent is available to the public.
OpenAI, Introducing ChatGPT agent (company-reported) · Jul 17, 2025
What independent tests found
- OSWorld 2.0 authors (Yuan, Xie, Yu et al.)
On OSWorld 2.0, 108 long computer workflows that take a person about 1.6 hours each, the best AI agent fully completed only 20.6% of tasks.
“Claude Opus 4.8 with maximum thinking and batched tool calls scores best but still completes only 20.6% of tasks.”
OSWorld 2.0, arXiv 2606.29537 · Jun 28, 2026
- OSWorld, reported in the Stanford AI Index
On OSWorld, a test of everyday computer tasks, the best AI scored 66.3% in 2025. People score 72.35%.
Stanford AI Index 2026 · 2026
Not found in our sources yet: tested with real people; how many people use it. No regulator approves AI for this task, so the approval step doesn't apply.
Track record and tools.
Failures and court cases are shown beside the stage, never folded into it. Tools are listed because the evidence names them, in no order of merit.
- ChatGPT agent
- GPT-5.4
- Claude Opus 4.8
Can AI do these yet?

Plan and book my trip
Stage 3 of 6Independently tested
2024 benchmark: GPT-4 made a valid travel plan 0.6% of the time

Shop and buy for me
Stage 2 of 6Launched
ChatGPT let US users buy from Etsy sellers inside the chat (Sep 2025)

Finish a long coding task alone
Stage 3 of 6Independently tested
METR: top agents' time horizon now over two working days
