OpenAI

OpenAI is an organization that develops AI models and serves them through ChatGPT and the OpenAI API.

Models

Semantics: OpenAI tends to use the words “model” and “snapshot” to refer to models (snapshots of weights), families (sets of models), or aliases (which this website avoids making individual pages for).

Families

All models

GPT-5.6 Luna2026-07-09Active1.05M$1 / $6
GPT-5.6 Sol2026-07-09Active1.05M$5 / $30
GPT-5.6 Terra2026-07-09Active1.05M$2.5 / $15
GPT-5.5 Thinking2026-04-23Active1.05M$5 / $30
GPT-5.5 Pro2026-04-23Active——
GPT-5.4 Thinking2026-03-05Active1.05M$2.5 / $15
GPT-5.4 Pro2026-03-05Active——
GPT-5.3 Instant2026-03-03Deprecated128K$1.75 / $14
GPT-5.3-Codex2026-02-05Active400K$1.75 / $14
GPT-5.2 Thinking2025-12-11Active400K$1.75 / $14
GPT-5.2 Pro2025-12-11Active——
GPT-5.1-Codex-Max2025-11-19Deprecated400K$1.75 / $14
GPT-5.1 Thinking2025-11-12Active400K$1.25 / $10
GPT-5.1 Instant2025-11-12Deprecated128K$1.25 / $10
Polaris Alpha2025-11-06Active400K$1.25 / $10
GPT-5 Pro2025-10-06Deprecated——
GPT-5 Thinking2025-08-07Deprecated400K$1.25 / $10
GPT-5 Instant2025-08-07Deprecated128K$1.25 / $10
o3-pro2025-06-10Deprecated——
o32025-04-16Deprecated200K$2 / $8
GPT-4.12025-04-14Active1.05M$2 / $8
GPT-4.52025-02-27Retired128K$75 / $150
o12024-12-17Deprecated200K$15 / $60
gpt-4o-2024-11-202024-11-20Active128K$2.5 / $10
gpt-4o-2024-08-062024-08-06Active128K$2.5 / $10
gpt-4o-2024-05-132024-05-13Deprecated—$5 / $15
gpt-4-06132023-06-13Deprecated——
gpt-4-03142023-03-14Retired8K—
Bing2023-02-07Active——
code-davinci-0022022-03-15Retired——
ada2020-06-11Active——
babbage2020-06-11Active——
curie2020-06-11Active——
davinci2020-06-11Active——
GPT-22019-02-14Active——
GPT-12018-06-11Active——
gpt-4-base—Active——
GPT-4-early—Active——
38 of 38 models

Developer API reference

ChatGPT reference