OpenAI announced higher included Work and Codex usage on 29 October. Pro 100 and Pro 500 plans receive twice their previous allowances. ChatGPT Business release notes
The company also cancelled the Pro 200 reduction announced in its September email. Subscribers already receiving the higher allowance keep it; those on the lower allowance receive twice their previous allocation from 29 October, bringing the two groups to the same limit.
The entry also announces increased usage for Business Premium but does not specify its multiplier. It provides no universal task count: the confirmed news is the allowance change, not a fixed number of jobs each subscriber can complete. ChatGPT Business release notes