Latest AI models: GPT-5.2, Claude Opus 4.5, Gemini 3 Pro compared

OpenAI's GPT-5.2, released in December 2025, is the reasoning powerhouse with 187 tokens/sec (3.8x faster than Claude) and 4.8% hallucination rate. It scores 100% on AIME 2025 math and 94.2% on MMLU-Pro, but costs $20/$60 per 1M tokens. Its unified architecture supports reasoning tokens, free-form tool calls, and native integrations with Gmail and SharePoint, making it ideal for real-time, high-throughput applications.

Anthropic's Claude Opus 4.5 (November 2025) leads on SWE-bench at 80.9% (vs GPT-5.2's 74.9%) and excels in agentic workflows with Terminal-Bench Hard at 44%. At $5/$25 per 1M tokens (66% cheaper than previous Opus), it's the best value for complex coding tasks. Google's Gemini 3 Pro features a 1M token context window (2.5x larger than GPT-5.2) and native multimodality (text, image, audio, video). It scores 76.8% on SWE-bench and ~92% on MMLU, with fast Flash variant at 650ms. Its strength lies in processing entire codebases or hours of video in one go, making it ideal for multimodal analysis and long-context workflows.