OpenAI has expanded the availability of its GPT-5.3-Codex model to third-party developers via API and Microsoft Foundry.

OpenAI's new Spark model codes 15x faster than GPT-5.3-Codex - but there's a catch ...

OpenAI is pitching GPT-5.3-Codex as a long-running “agent,” not just a code helper: The company says the model combines GPT-5 ...

“Codex-Spark is the first step toward a Codex that works in two complementary modes: real-time collaboration when you want ...

GPT-4o and other older models in ChatGPT, shifts focus to GPT-5.2, and launches GPT-5.3-Codex-Spark for real-time coding ...

OpenAI has launched GPT-5.3-Codex-Spark, its first AI model built specifically for real-time coding, capable ...

OpenAI launches GPT-5.3 Codex Spark powered by Cerebras chips, signaling a shift from Nvidia reliance and intensifying the AI infrastructure race.

OpenAI has launched GPT-5.3 Codex offering a 25% speed increase over GPT-5.2 Codex, helping developers ship code faster.

GPT-3.5 Codex Spark offers 128,000-token context and ChatGPT Pro-only access, giving developers quicker real-time coding responses at lower cost.

In a move that caught the developer community off-guard on February 12, 2026, OpenAI launched GPT-5.3 Codex Spark. This isn't ...

GPT‑5.3‑Codex‑Spark releases with ultra-fast coding and 128k context window, redefining interactive development for ChatGPT ...

GPT-5.3-Codex-Spark is the latest version of OpenAI's Codex and runs completely on Cerebras' wafer-scale engine.