ChatGPT-5.3 Codex & Claude Opus 4.6 Launch Offering Unmatched Coding Speed or Long Recall Depth

Claude Opus 4.6 and ChatGPT 5.3 Codex launch with a 1-million-token window and 25% faster runs, letting you match tasks to ...

A new version of OpenAI’s Codex is powered by a new dedicated chip

OpenAI calls the new coding tool the "first milestone" in its relationship with the chipmaker.

GPT-5.3 Codex Raises the Bar, but Opus 4.6 Still Owns Deep Reasoning

In benchmark tests such as Swaybench Pro and Terminal Bench, GPT-5.3 Codex consistently outperformed its predecessors, setting new standards for speed and execution. When compared to Anthropic’s Opus ...

OpenAI's new Codex app hits 1M+ downloads in first week — but limits may be coming to free and Go users

In a major milestone for the "AI coding wars," OpenAI CEO Sam Altman confirmed on X that the company's standalone Codex ...

Anthropic's Claude Opus 4.6 brings 1M token context and 'agent teams' to take on OpenAI's Codex

Anthropic has launched Claude Opus 4.6 with a 1M-token context window, multi-agent “agent teams” in Claude Code, and new API ...

Claude Opus 4.6 vs GPT-5.3 Codex: Who is leading the coding agent race

The race to build the ultimate AI coding agent has entered a more mature, more revealing phase. With fresh releases from ...