OpenAI: o3 Pro

OpenAI o3 Pro accepts text, files, and images, and supports a 200,000-token context window with up to 100,000 tokens of completion. It includes tool use and reasoning capabilities, making it suited for multi-step tasks that benefit from structured problem-solving across long documents or mixed-media inputs. Structured output support is unconfirmed from available data. At $20.00 per million input tokens and $80.00 per million output tokens, this is an expensive model, and the cost case needs scrutiny. Its blended benchmark score of 77.3 comes from only two benchmarks, so performance claims are narrowly evidenced rather than broadly validated. Teams doing code-heavy work may find the aider_polyglot score of 84.9 relevant, but buyers requiring proof across diverse task types should treat the benchmark picture as incomplete and weigh that uncertainty directly against the premium price before shortlisting it.