This model is 15 months old. The same company has since released something newer: Astra (2026-09-03). The details below are still accurate for this model — it just is not what we would recommend today.
o3-pro
OpenAI🇺🇸 United States
Extended-compute o3 for maximum reliability on hard science, math, and coding problems. Superseded by GPT-5 Pro.
Context window200K tokens
Input / 1M tokens$20
Output / 1M tokens$80
Version History
o3-pro-launchmajor
o3-pro launches. Extended-compute o3 for maximum reliability on hard science, math, and coding problems. Superseded by GPT-5 Pro.
Benchmark Scores
Full leaderboard →23.3%
Hallucination (Summarization)