OpenAI: GPT-5.1-Codex

OpenAI's GPT-5.1-Codex is designed to handle extensive text and image inputs with a context length of 400,000 tokens; it also supports tools for enhanced interaction and reasoning capabilities. While structured output isn't explicitly supported, the model excels in generating detailed responses that integrate diverse input types. This model should be considered for projects requiring robust handling of both textual and visual data, alongside advanced tool integration. Its blended benchmark score of 57.2 indicates strong performance across independent evaluations; however, given its non-free nature and pricing at $1.25 per million input tokens and $10.0 per million output tokens, it may be more suitable for high-demand applications where comprehensive functionality outweighs cost concerns.