AI Model Landscape Report: GPT-5.4, Gemini 3.1 Pro, Claude Opus 4.6, and Grok 4.20
As of April 2026, the AI model market is highly competitive, with top models from Google (Gemini 3.1 Pro), Anthropic (Claude Opus 4.6), OpenAI (GPT-5.4), and xAI (Grok 4.20) showing very close performance. Key differences lie in specific strengths like reasoning (Gemini), long context windows (Meta's Llama 4), and coding (Grok). Pricing varies dramatically, so choosing a model depends heavily on the specific task and budget.