OpenAI: GPT-4 Turbo

GPT-4 Turbo is a text-and-image input model from OpenAI with a 128,000-token context window and a 4,096-token output ceiling. It supports tool use, making it suitable for agentic workflows and function-calling tasks, but it does not include a built-in reasoning mode. Structured output support is unconfirmed from available data. At $10.00 per million input tokens and $30.00 per million output tokens, this is a premium-tier option, and its cost is a real consideration against competitors with overlapping capabilities. There is currently no independent benchmark coverage to evaluate its performance objectively, so buyers cannot rely on scored comparisons to justify the price. Teams that already have OpenAI integrations and need large-context, vision-capable, tool-enabled inference may shortlist it for compatibility reasons, but those optimizing on cost or verified quality scores should hold the spend until benchmark data becomes available.