o3 Pro

OpenAI's premium reasoning model from the o-series, built for extended chain-of-thought processing on difficult problems with a 200k token context window.

Strengths

Excels at complex reasoning tasks requiring deep analytical work, with access to a large context window for processing lengthy inputs.

Best for

Batch processing of computationally expensive reasoning problems where extended inference time is acceptable.

Limitations

Available only for batch processing, not real-time interaction; o4-mini offers a lighter-weight alternative when full reasoning capability isn't required.