Artificial Intelligence (AI) companies are making vast claims about the ability of their tools to replace human labour.

Some jobs will be automated, others will be "augmented". The bosses of the world's biggest companies are diverting vast sums into these tools, partly with the knowledge that they could save money on headcount.

"Flat is the new up", we are told, in terms of the size of a company's workforce as investors ask whether jobs should be done by new recruits - or, instead, armies of "AI Agents", virtual workers tasked with doing specific roles, some of them relatively skilled.

If even half true there will be an impact on us all, across sectors and individual careers, and perhaps it will happen sooner than we think.

Nobel prize-winning economists recently warned the world “must act now”, external to ensure that AI leads to rising living standards and not large-scale job displacement, and last month London businesses warned they were struggling to find the skills they need as AI disrupts the jobs market.

It is early days yet, but there are already some notable patterns in the data.

A chart showing the proportion of tasks completed by selected AI models, by the estimated time it would take a human expert to do the same task. The proportion of tasks completed by model and time is as follows:
GPT-4, released March 2023, completed 85% of tasks taking up to 5 minutes, 15% of tasks taking between 5 and 59 minutes, and 0% of tasks taking longer than an hour.
GPT-4o, released May 2024, completed 83% of tasks taking up to 5 minutes, 15% of tasks taking between 5 and 59 minutes, and 0% of tasks taking longer than an hour.
Claude 3.5 Sonnet (New) (Inspect), released October 2024, completed 88% of tasks taking up to 5 minutes, 42% of tasks taking between 5 and 59 minutes, and 3% of tasks taking longer than an hour.
o3 (Inspect), released April 2025, completed 98% of tasks taking up to 5 minutes, 85% of tasks taking between 5 and 59 minutes, and 17% of tasks taking longer than an hour.
Gemini 3.1 Pro, released February 2026, completed 99% of tasks taking up to 5 minutes, 96% of tasks taking between 5 and 59 minutes, and 46% of tasks taking longer than an hour.
Claude Mythos Preview (early), released April 2026, completed 99% of tasks taking up to 5 minutes, 96% of tasks taking between 5 and 59 minutes, and 67% of tasks taking longer than an hour.

This chart is the industry benchmark for how various models can perform the tasks previously done by humans, in this case using and developing computer software.