OpenAI Releases GPT-5.4 and it is State of the Art (SOTA) across Key Coding Benchmarks
On March 5th, 2026, OpenAI released GPT-5.4 GPT-5.4 brings together the best of their “recent advances in reasoning, coding, and agentic workflows into a single frontier model”. OpenAI said that GPT-5.4 “incorporates the industry-leading coding capabilities of GPT‑5.3‑Codex while improving how the model works across tools, software environments, and professional tasks involving spreadsheets, presentations, and documents.” GPT 5.3 Coden is great for agentic coding and combining it with GPT-5.4 helps you get real work done accurately, effectively, and efficiently.
OpenAI shared the following benchmarks comparing 5.4 to 5.3 Codex and GPT 5.2 in their announcement:
For Coding, they also shared their SWE-Bench Pro (public) Accuracy vs Latency Benchmarks:
As a demonstration of their model’s improved computer-use and coding capabilities working in tandem, they released an experimental Codex skill called “Playwright (Interactive)(opens in a new window)”. This new skill “allows Codex to visually debug web and Electron apps; it can even be used to test an app it’s building, as it’s building it.”
I can’t wait to test and see how it has improved AI assisted game development! I’ll let you know how my testing goes via my AI Assisted Unreal Engine video game development project using my Betide NeoStack AI Plugin and my OpenRouter account.
