For example, Claude Sonnet 4.5 shows noticeable advantages in tricky Excel tasks. Reports suggest it performs about 15% better than GPT-4o in "Agent Mode" for things like building complex financial models or spotting errors across multiple spreadsheets. Claude Opus 4.1 handles super-long context -- up to 500,000 tokens -- making it great for summarizing massive piles of company documents, reports, or legal files, something earlier GPT versions struggled with.The answer lies in real-world performance. Micros ...