OpenAI had experienced professionals blindly grade outputs from OpenAI's GPT-4o, o4-mini, o3, and GPT-5 models, as well as Anthropic's Claude Opus 4.1, Google's Gemini 2.5 Pro, and xAI's Grok 4.
The LandingAI Agentic Document Extraction API pulls structured data out of visually complex documents—think tables, pictures, and charts—and returns a hierarchical JSON with exact element locations.
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