Codex User Milestone Celebrated
OpenAI's AI coding assistant, Codex, has achieved a significant milestone, attracting 3 million weekly users. To commemorate this impressive user growth,
CEO Sam Altman announced the reset of all usage limits for Codex. This gesture means that for the remainder of the current period, users will have a clean slate for their AI tool access, effectively restarting their usage allowance from zero. This policy aims to further incentivize adoption, with plans to reset limits for every additional million users acquired, pushing towards a goal of 10 million Codex users. The platform has seen rapid adoption, with a substantial increase in users reported in under a month. Thibault Sottiaux, head of Codex, highlighted this surge, noting the transition from two million to three million users in approximately four weeks, a testament to its growing utility and appeal in the developer community. This initiative builds upon a previous limit reset implemented earlier in April 2026 due to users frequently encountering their rate limits, indicating a consistent demand for the service.
Claude Mythos: A Double-Edged Sword
Meanwhile, Anthropic's AI, Claude, is making waves with its advanced version, Claude Mythos. Boris Cherny, a creator associated with Claude Code, described Mythos as "very powerful, and should feel terrifying," underscoring its formidable capabilities. Originally conceived as a coding tool, likely an evolution of Claude Code, Mythos has demonstrated an extraordinary ability to discover thousands of software vulnerabilities. These flaws were reportedly missed by human analysis across various software applications. Anthropic is currently not making Claude Mythos publicly accessible. Instead, the company is collaborating with industry giants like Google and Microsoft through Project Glasswing to address the security weaknesses identified by the AI, thereby enhancing overall cybersecurity. This development signals a complex interplay between AI advancement and security, where powerful AI tools can both uncover and potentially exploit vulnerabilities.
Revenue and Valuation Dynamics
The competitive landscape between Anthropic and OpenAI is further defined by their recent financial performance and market valuations. Anthropic has reported a significant increase in its run-rate revenue (RRR), surpassing $30 billion, a substantial leap from $9 billion at the end of 2025. In comparison, OpenAI, anticipated to go public soon, is said to have an RRR of $25 billion as of March 2026. This financial trajectory could present a point of concern for OpenAI, which currently holds a higher valuation at $852 billion, compared to Anthropic's $380 billion valuation. This disparity in growth and market capitalization highlights the rapid evolution and intense competition within the AI sector, with both companies vying for dominance through technological innovation and market penetration.
Codex's Enterprise Focus
OpenAI's strategy with Codex appears to be increasingly focused on enterprise-level applications. The company has been intensifying its efforts in developing and deploying Codex, positioning it as a key offering for businesses seeking AI-powered coding solutions. This strategic shift towards enterprise products is complemented by the remarkable user adoption seen for Codex. The platform has managed to secure a substantial user base, demonstrating its effectiveness and appeal within the professional development community. This move towards the enterprise market suggests a long-term vision for Codex as a critical tool for businesses, aiming to streamline development processes and enhance productivity. The growing number of users, both individual developers and likely enterprise teams, underscores the value proposition of Codex in the current technological landscape, positioning OpenAI for continued growth in this sector.
