GPT-5 by itself will not be a general-purpose AGI capable of arbitrary tasks.

The claim is that GPT-5 on its own would not be a general-purpose AGI able to take on arbitrary tasks. True: after GPT-5's release, OpenAI does not credibly claim it is AGI, and the expert consensus and benchmarks or evaluations show GPT-5 alone cannot reliably do arbitrary tasks. Evidence would include clear failures on broad agentic or novel tasks, ARC-AGI style tests, or long-horizon real-world tasks. Mostly true: the same, but a noticeable minority of credible experts argue it meets some definition of AGI. Mixed: credible expert opinion is genuinely split. Mostly false: OpenAI or a broad expert consensus treats GPT-5 alone as AGI, with only narrow exceptions. False: GPT-5 by itself is widely shown and accepted to perform arbitrary tasks at a general human level.

Set before the research began.

1. E1 Details about METR's evaluation of OpenAI GPT-5 METR · 7 August 2025

   “To determine if GPT-5 is capable of executing any of our three main threat models, we used our time-horizon evaluation and determined it has a 50% time-horizon of around 2 hours 17 minutes on agentic software engineering tasks.”

2. E2 Details about METR's evaluation of OpenAI GPT-5 METR · 7 August 2025

   “Like other models, GPT-5 performed poorly on some of the longest HCAST tasks, and some shorter tasks which load particularly heavily on forward planning.”

3. E3 OpenAI's GPT-5 is here | TechCrunch TechCrunch · 7 August 2025

   “During a briefing with reporters, OpenAI CEO Sam Altman claimed GPT-5 is “the best model in the world,” and said it represented a “significant step” along the company’s path to developing AI that can outperform humans at most economically valuable work — that is, artificial general intelligence (AGI).”

4. E4 OpenAI Researcher Mocks Elon Musk's AGI Claim to His Face Futurism · 21 October 2025

   “In the build up to the launch of OpenAI’s newest GPT-5 model this summer — considered a massive disappointment by many — Altman declared it a “significant step along the path to AGI.””

At launch, OpenAI's CEO called GPT-5 a "significant step" toward AGI rather than AGI itself (E3, E4). Neither source reports OpenAI claiming that GPT-5 is AGI. METR's independent evaluation measured a 50% time horizon of about 2 hours 17 minutes on agentic software tasks, and found that GPT-5 did poorly on some of the longest and most planning-heavy tasks (E1, E2). The evidence shows limits on long-horizon and planning-heavy tasks [E1][E2], and none of it reports OpenAI or credible experts treating GPT-5 alone as AGI.