OpenAI: o3 Pro

OpenAI o3 Pro accepts text, files, and images, giving it a multimodal input range suitable for document-heavy or visually grounded tasks. It supports tool use and reasoning, and its 200,000-token context window accommodates long conversations or large document sets. Maximum output runs to 100,000 tokens, which is useful for extended generation tasks. Structured output support is not confirmed in available data. At $20.00 per million input tokens and $80.00 per million output tokens, this is an expensive option, and the cost compounds quickly on output-heavy workloads. Its blended benchmark score of 77.3 comes from only two benchmarks, so that figure reflects limited independent coverage rather than a broad established track record. Teams should shortlist it when reasoning depth and long-context handling are priorities and budget allows, but buyers who need broad benchmark validation before committing should treat its performance standing as partially unproven.