OpenAI Models
Every OpenAI language model, explained in plain English. OpenAI's language models — the GPT and o-series models behind ChatGPT and the API.
What are the OpenAI models?
OpenAI releases new AI models regularly, and the announcements are usually written for engineers. We explain each model in language anyone can follow: what it does well, what it costs, what it can handle, and how it compares to the one before it.
Models, newest first
- GPT-5.6 Cyber 2026-08-07 GPT-5.6 Cyber explained →
- GPT-5.6 Luna 2026-07-09 GPT-5.6 Luna explained →
- GPT-5.6 Terra 2026-07-09 GPT-5.6 Terra explained →
- GPT-5.6 Sol 2026-07-09 GPT-5.6 Sol explained →
- GPT-5.5 Pro 2026-04-24 GPT-5.5 Pro explained →
- GPT-5.5 2026-04-24 GPT-5.5 explained →
- GPT-5.4 Nano 2026-03-17 GPT-5.4 Nano explained →
- GPT-5.4 Mini 2026-03-17 GPT-5.4 Mini explained →
- GPT-5.4 Pro 2026-03-05 GPT-5.4 Pro explained →
- GPT-5.4 2026-03-05 GPT-5.4 explained →
- GPT-5.3 Chat Latest 2026-03-03 GPT-5.3 Chat Latest explained →
- GPT-5.3 Codex 2026-02-24 GPT-5.3 Codex explained →
- GPT-5.2 Codex 2026-01-14 GPT-5.2 Codex explained →
- GPT-5.2 2025-12-11 GPT-5.2 explained →
- GPT-5.1 Codex Max 2025-12-04 GPT-5.1 Codex Max explained →
- GPT-5.1 2025-11-13 GPT-5.1 explained →
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