
Pushing the frontier of cost-effective reasoning
Source month: September 2026 · Source: Similarweb estimate
This is whole-site traffic for openai.com; it does not measure this feature's usage, users, or customers.
Data status: Valid estimate · Updated: 2026-10-08
Current Estimated Visits
259.5M
Previous Estimated Visits
204.3M
Absolute Gain
+55.1M
Monthly Growth
+27.0%
The newest, most cost-efficient reasoning model from OpenAI. Excels at STEM—science, math, & coding. Features include function calling & structured outputs. Available in ChatGPT & the API. Optimized for speed & exceptional performance.
OpenAI o3-mini is The newest, most cost-efficient reasoning model from OpenAI. Excels at STEM—science, math, & coding. Features include function calling & structured outputs. Available in ChatGPT & the API. Optimized for speed & exceptional performance.
Similarweb estimates that openai.com received approximately 259.5M website visits in September 2026. Its estimated global website rank was #147. This is traffic for the whole parent site, not a measure of OpenAI o3-mini feature usage, users, or customers.
Yes, OpenAI o3-mini is free to use.
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Avg. Duration
2m 30s
Pages per Visit
2.73 pages
Bounce Rate
54.9%
Category Rank
N/A
Global Rank
#147
Rank
#188
Domain Created
Jan 19, 2007
Domain Age
22.0 years