OpenAI and Anthropic have temporarily relaxed usage limits for their latest AI models, including GPT-5.6 Sol and Claude’s Fable 5. OpenAI announced Sunday it is “temporarily” lifting the five-hour usage window for ChatGPT Plus, Business, and Pro subscribers to access GPT-5.6 Sol. Anthropic is extending the trial period for Fable 5, giving Claude subscribers another week of in-plan access, doubling Claude Cowork usage limits until August 5, and boosting weekly Claude Code limits by 50 percent through July 19. The relaxed limits are only temporary, driven by competition between the AI companies. OpenAI is optimizing GPT-5.6 Sol’s reasoning and “multi-agent” use to conserve AI tokens. Anthropic has warned it will eventually pull Fable 5 from its subscription plans, though an exec repeated a promise that “we aim to restore Fable as a standard part of our subscriptions as soon as capacity allows.”