OpenAI has increased Codex rate limits by tenfold for over 8,000 developers who applied for its invite-only GPT-5.5 party, allowing enhanced access to its coding agent until June 5. This move comes amidst a competitive landscape where Anthropic is hosting a similar event, reflecting a growing rivalry between the two companies in the AI development space.
The key insight for a professional tracking artificial intelligence is OpenAI's strategic move to increase Codex rate limits tenfold for developers who showed interest in their GPT-5.5 party. This not only incentivizes developers to engage deeply with OpenAI's tools but also potentially locks in a dependency that could translate into subscription upgrades post-trial. This is a critical period for OpenAI to convert trial usage into long-term adoption, amidst their competitive landscape with Anthropic, which has recently overtaken OpenAI in LLM revenue market share.