Opus 4.6 received "agent commands" and an expanded context window. GPT-5.3 Codex is 25% faster than the previous version. The releases intensified competition between Anthropic and OpenAI. Anthropic and OpenAI almost simultaneously introduced new coding tools, boosting competition in the AI development segment. The companies released updated versions of their key models, focused on automating programming tasks and collaborative work of autonomous agents.
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Opus 4.6 received "agent commands" and an expanded context window. GPT-5.3 Codex is 25% faster than the previous version. The releases intensified competition between Anthropic and OpenAI. Anthropic and OpenAI almost simultaneously introduced new coding tools, boosting competition in the AI development segment. The companies released updated versions of their key models, focused on automating programming tasks and collaborative work of autonomous agents.