OpenAI

Model organization

OpenAI develops foundation models for general-purpose reasoning, generation, and agentic workflows.

Reasoning, Generative AI

Model families

24 of 84 model versions

	Family			Max output	Reasoning	Tool call	Structured	Temperature	Weights
GPT-6.1 Terra	GPT	1	1.1M	128K	Yes	Yes	Yes	-No	—				2026-10-26
GPT-6.1 Sol	GPT	1	-	-	Yes	Yes	Yes	-No	Closed				2026-10-08
GPT-6 Sol	GPT	1	1.1M	128K	Yes	Yes	Yes	-No	Closed				2026-09-22
GPT-6 Luna	GPT	1	1.1M	128K	Yes	Yes	Yes	-No	Closed				2026-09-22
GPT-Image-2.5 Flare	GPT	1	-	-	-No	-No	-No	-No	Closed			-	2026-09-08
GPT-Image-2.5 Sunburst	GPT	1	-	-	-No	-No	-No	-No	Closed			-	2026-09-08
GPT Rosalind	GPT	-	-	-	-No	-No	-No	-No	Closed		-	-	2026-09-08
GPT-6 Astra	GPT	1	1.1M	128K	Yes	Yes	Yes	-No	Closed				2026-09-03
GPT-5.6 Luna	GPT	22	1.1M	128K	Yes	Yes	Yes	-No	Closed				2026-07-09
GPT-5.6 Sol	GPT	22	1.1M	128K	Yes	Yes	Yes	-No	Closed				2026-07-09
GPT-5.6 Terra	GPT	22	1.1M	128K	Yes	Yes	Yes	-No	Closed				2026-07-09
GPT-5.6 Luna Pro	GPT	4	1.1M	128K	Yes	Yes	Yes	-No	Closed		-	-	2026-07-09
GPT-5.6 Terra Pro	GPT	4	1.1M	128K	Yes	Yes	Yes	-No	Closed		-	-	2026-07-09
GPT-5.6 Sol Pro	GPT	4	1.1M	128K	Yes	Yes	Yes	-No	Closed		-	-	2026-07-09
GPT-Realtime-2.1	GPT	2	128K	32K	Yes	Yes	-No	-No	Closed				2026-07-06
GPT-Realtime-Whisper	Whisper	2	16K	2K	-No	-No	-No	Yes	Closed	-	-	-	2026-05-07
GPT-5.5 Instant	GPT	2	400K	128K	Yes	Yes	Yes	Yes	Closed		-	-	2026-05-05
GPT Chat Latest	GPT	4	400K	128K	-No	Yes	Yes	-No	Closed		-	-	2026-05-05
GPT-5.5	GPT	35	1.1M	128K	Yes	Yes	Yes	-No	Closed			-	2026-04-23
GPT-5.5 Pro	GPT	11	1.1M	128K	Yes	Yes	Yes	-No	Closed		-	-	2026-04-23
GPT Image 2	GPT	6	0	0	-No	-No	-No	-No	Closed			-	2026-04-21
GPT-5.4 Image 2	GPT	3	272K	128K	Yes	-No	Yes	-No	Closed		-	-	2026-04-21
GPT-5.4 mini	GPT	28	400K	128K	Yes	Yes	Yes	-No	Closed			-	2026-03-17
GPT-5.4 nano	GPT	24	400K	128K	Yes	Yes	Yes	-No	Closed			-	2026-03-17

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