TLDR Tech / Dev
GPT-5.3-Codex available on OpenRouter
According to OpenRouter's new GPT-5.3-Codex stats, OpenAI's GPT-5.3-Codex has a 400,000-token context window and 25% faster performance compared to its predecessors. It has state-of-the-art results on SWE-Bench Pro, and it supports agentic workflows, terminal proficiency, and cybersecurity vulnerability identification.
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