OpenAI: GPT-5.5 Pro (batch)

GPT-5.5 Pro by OpenAI is designed for extensive text generation and supports input from files, images, and text; it can handle contexts up to 1,050,000 tokens and reason effectively. While it offers robust tool support, structured output capabilities are not specified. Despite its powerful features, the model's current lack of independent benchmark coverage means its performance relative to others is uncertain. Given its pricing at $15 per million input tokens and $90 for outputs, GPT-5.5 Pro might be most suitable for organizations willing to invest in high-context scenarios where reasoning and diverse input types are critical, despite the absence of comprehensive benchmark data.