Anthropic and OpenAI dropped their coding models 20 minutes apart. This rivalry is getting wild
The AI giants are in a petty war, with leaked drama and competing model launches.
Deep Dive
Anthropic and OpenAI launched rival coding models within 20 minutes of each other, capping a week of public drama. Anthropic's Claude Opus 4.6 offers a 1M-token context for deep reasoning, while OpenAI's GPT-5.3 Codex is 25% faster and crushed coding benchmarks. The launch followed OpenAI poaching an Anthropic researcher and Super Bowl ads mocking ChatGPT ads. OpenAI's enterprise share fell from 62% to 53% as Anthropic grew from 14% to 18%.
Why It Matters
The intensifying rivalry is accelerating AI development, forcing rapid model improvements and shifting enterprise market share.