GPT-5.4 is OpenAI's most capable model yet, combining coding, computer operation, and reasoning in a single package for the first time.

GPT-5.4 is coming soon: double the context window of GPT-5.2, more reliable performance on long-running tasks, and a new "extreme" thinking mode.

GPT-5.4 is OpenAI's most capable model yet, combining coding, computer operation, and reasoning in a single package for the first time.

GPT-5.4 Pro, GPT-5.3 Instant, Gemini 3.1 Flash Lite, Qwen 3.5 - 0.8B 2B 4B 9B, Step 3.5 Flash Base, Yuan 3.0 Ultra, Grok 4.20 beta 2, Cognition SWE-1.6, Codex desktop for Win,…