[Anthropic Reiterates No Ads in Claude in IPO Filing] According to The Decoder, Anthropic reiterated in a letter accompanying its IPO prospectus (S-1) that Claude chat will not run ads. Anthropic stated that it hopes Claude's sole motivation is to provide useful answers; once advertising is included in revenue targets, the pressure to optimize user engagement increases. The letter categorizes this commitment as "values over profits." A similar example is Claude Mythos Preview: this model was deemed too risky for cyberattacks, and the release of Claude Fable 5 was delayed after additional security measures were implemented, resulting in lost revenue and market share for the company. Anthropic also provided approximately $100 million in free Claude credits to cybersecurity providers.