OpenAI releases GPT-4 with multimodal input and stronger professional evaluations

Summary

GPT-4 introduced image-and-text input with text output and reported major gains across academic and professional benchmarks. OpenAI paired the launch with a system card, staged access and explicit warnings about hallucinations, reasoning errors and social bias, establishing a wider pattern for frontier-model releases. Capability, benchmark and availability claims are attributed to OpenAI unless independently verified. Follow the original source for complete technical details, current availability, licensing and later updates.