GPT-5.1
openai/gpt-5.1The industry reference flagship, top-tier general capability with vision, tools and caching.
400K ctx · Free
OpenAI
The reference point for frontier capability
Models
4
Founded
2015
Country
United States
San Francisco
OpenAI has been building models out of San Francisco, United States, since 2015. Webparam tracks four of its models, spanning language, reasoning and video: free to call and reaching 400K.
Models
The OpenAI catalogue
Ordered by weekly usage on Webparam.
GPT-5.1 by OpenAI OpenAIOn request GPT-5.1 Mini by OpenAI OpenAIOn request GPT-5.1 Mini
openai/gpt-5.1-miniThe volume workhorse of the GPT line, most of the capability at a fifth of the price.
400K ctx · Free
o4 by OpenAI OpenAIOn request o4
openai/o4OpenAI's deliberate reasoning flagship, the ceiling for hard math and science problems.
300K ctx · Free
Sora 2 by OpenAI OpenAIOn request Sora 2
openai/sora-2Cinematic video generation with physics-aware scenes and audio-synchronised output.
— ctx · Free
Recent releases
What shipped lately
History
OpenAI set the template the whole industry follows, from GPT's scaling curves to the API-first business model every provider now imitates. Its GPT-5 generation and o-series reasoning models remain the benchmark others measure against, and its developer platform is the most imitated interface in AI.
OpenAI set the template the whole industry follows, from GPT's scaling curves to the API-first business model every provider now imitates. Its GPT-5 generation and o-series reasoning models remain the benchmark others measure against, and its developer platform is the most imitated interface in AI.
Strengths
- Frontier capability across text, vision and video
- The industry's de-facto API conventions
- Deep tooling and ecosystem support
Use OpenAI models through Webparam
Every model above is callable through one OpenAI-compatible convention: change the model ID, keep the request.
Related providers
