OpenAI and xAI have released their latest AI models, GPT-5.4 and Grok 4.20, respectively. Both aim for more natural interactions than their predecessors, but target different user needs.
GPT-5.4, launched by OpenAI, is noted for its reliability and robust reasoning capabilities. In coding tasks, it produced more polished and stable results, though it was slower. For creative writing, GPT-5.4 delivered atmospheric prose, but its paradox resolution was more literary than immediate.
Grok 4.20, from xAI, emphasizes personality and speed. It generated functional code more rapidly but sometimes introduced logical flaws, making some tasks unplayable. In creative writing, Grok delivered a more impactful twist ending, though its character portrayal relied on stereotypes.
For logic and reasoning, GPT-5.4 demonstrated better handling of ambiguity and evidence analysis. Grok 4.20, while often sharper, sometimes treated ambiguity as certainty or, in one instance, appeared to pull answers directly from external repositories.
In handling sensitive topics, both models showed improvement. GPT-5.4 offered a measured and professional response, while Grok 4.20 provided a more direct and specific, albeit less conventional, approach.
GPT-5.4 is available through ChatGPT subscriptions starting at $20/month. Grok 4.20 requires SuperGrok access, around $30/month. For users prioritizing code accuracy and structured reasoning, GPT-5.4 is the more reliable choice. For those seeking a more personal and creative AI experience, Grok 4.20 shows promise, though it remains in beta.