# Latest GPT model: GPT-6.1 Terra family: gpt page: /models/gpt as_of: 2026-11-04 developer: /record/openai.md As of November 4, 2026, the latest GPT model on the AsOf record is GPT-6.1 Terra, released on October 26, 2026 by OpenAI, from a primary source (developers.openai.com) and one further source (github.blog). The newest in each other line: GPT-6.1 Sol (September 29, 2026), GPT-6 Luna (September 22, 2026), GPT-6 Astra (September 3, 2026), GPT-5.5 Instant (May 5, 2026), GPT-5.4 mini (March 17, 2026), GPT-5.4 nano (March 17, 2026) and GPT-5.3-Codex (February 24, 2026). The record holds 34 GPT models, 32 with a checked release date. Source: https://developers.openai.com/api/docs/changelog#2026-10-26 · claim: /claim/clm_D6FAF8FA79E0.md · model: /record/gpt-6-1-terra.md ## Terra Oldest first. A model's own record holds each date with its source. - [GPT-5.6 Terra](/record/gpt-5-6-terra.md): released 2026-07-09 · source: https://developers.openai.com/api/docs/changelog#2026-07-09 - [GPT-6.1 Terra](/record/gpt-6-1-terra.md): released 2026-10-26 · source: https://developers.openai.com/api/docs/changelog#2026-10-26 ## GPT Oldest first. A model's own record holds each date with its source. - [GPT-4 Turbo](/record/gpt-4-turbo.md): released 2023-11-06; deprecated 2026-04-22; retired 2026-10-23 · source: https://developers.openai.com/api/docs/changelog#2023-11-06 - [GPT-3.5 Turbo](/record/gpt-3-5-turbo.md): released 2024-04-24; deprecated 2026-04-22; retired 2026-10-23 · source: https://openai.com/index/gpt-4-api-general-availability - [GPT-4o](/record/gpt-4o.md): released 2024-05-13 · source: https://developers.openai.com/api/docs/changelog#2024-05-13 - [GPT-4.1](/record/gpt-4-1.md): released 2025-04-14; deprecated 2026-10-14 · source: https://developers.openai.com/api/docs/changelog#2025-04-14 - [GPT-5](/record/gpt-5.md): released 2025-08-07; deprecated 2026-06-11 · source: https://developers.openai.com/api/docs/changelog#2025-08-07 - [GPT-5.1](/record/gpt-5-1.md): released 2025-11-13; deprecated 2026-10-01 · source: https://developers.openai.com/api/docs/changelog#2025-11-13 - [GPT-5.2](/record/gpt-5-2.md): released 2025-12-11 · source: https://developers.openai.com/api/docs/changelog#2025-12-11 - [GPT-5.4](/record/gpt-5-4.md): released 2026-03-05 · source: https://developers.openai.com/api/docs/changelog#2026-03-05 - [GPT-5.5](/record/gpt-5-5.md): released 2026-04-24 · source: https://developers.openai.com/api/docs/changelog#2026-04-24 - [GPT-5.6 Sol](/record/gpt-5-6-sol.md): released 2026-07-09; replaced by GPT-6 Sol · source: https://developers.openai.com/api/docs/changelog#2026-07-09 - [GPT-6 Sol](/record/gpt-6-sol.md): released 2026-09-22; replaced GPT-5.6 Sol · source: https://developers.openai.com/api/docs/changelog#2026-09-22 - [GPT-6.1 Sol](/record/gpt-6-1-sol.md): released 2026-09-29 · source: https://developers.openai.com/api/docs/changelog#2026-09-29 - [GPT-4](/record/gpt-4.md): release not yet checked; deprecated 2026-04-22; retired 2026-10-23 - [GPT-4.5](/record/gpt-4-5.md): release not yet checked; deprecated 2025-04-14; retired 2025-07-14 ## Luna Oldest first. A model's own record holds each date with its source. - [GPT-5.6 Luna](/record/gpt-5-6-luna.md): released 2026-07-09; replaced by GPT-6 Luna · source: https://developers.openai.com/api/docs/changelog#2026-07-09 - [GPT-6 Luna](/record/gpt-6-luna.md): released 2026-09-22; replaced GPT-5.6 Luna · source: https://developers.openai.com/api/docs/changelog#2026-09-22 ## Astra Oldest first. A model's own record holds each date with its source. - [GPT-6 Astra](/record/gpt-6-astra.md): released 2026-09-03 · source: https://openai.com/index/gpt-6-astra-next-generation-work ## Instant Oldest first. A model's own record holds each date with its source. - [GPT-5.3 Instant](/record/gpt-5-3-instant.md): released 2026-03-03 · source: https://developers.openai.com/api/docs/changelog#2026-03-03 - [GPT-5.5 Instant](/record/gpt-5-5-instant.md): released 2026-05-05 · source: https://openai.com/index/gpt-5-5-instant ## Mini Oldest first. A model's own record holds each date with its source. - [GPT-4o mini](/record/gpt-4o-mini.md): released 2024-07-18; deprecated 2026-10-14 · source: https://developers.openai.com/api/docs/changelog#2024-07-18 - [GPT-4.1 mini](/record/gpt-4-1-mini.md): released 2025-04-14; deprecated 2026-10-14 · source: https://developers.openai.com/api/docs/changelog#2025-04-14 - [GPT-5 mini](/record/gpt-5-mini.md): released 2025-08-07; deprecated 2026-06-11 · source: https://developers.openai.com/api/docs/changelog#2025-08-07 - [GPT-5.4 mini](/record/gpt-5-4-mini.md): released 2026-03-17 · source: https://developers.openai.com/api/docs/changelog#2026-03-17 ## Nano Oldest first. A model's own record holds each date with its source. - [GPT-4.1 nano](/record/gpt-4-1-nano.md): released 2025-04-14; deprecated 2026-04-22; retired 2026-10-23 · source: https://developers.openai.com/api/docs/changelog#2025-04-14 - [GPT-5 nano](/record/gpt-5-nano.md): released 2025-08-07; deprecated 2026-06-11 · source: https://developers.openai.com/api/docs/changelog#2025-08-07 - [GPT-5.4 nano](/record/gpt-5-4-nano.md): released 2026-03-17; deprecated 2026-10-01 · source: https://developers.openai.com/api/docs/changelog#2026-03-17 ## Codex Oldest first. A model's own record holds each date with its source. - [GPT-5-Codex](/record/gpt-5-codex.md): released 2025-09-23; deprecated 2026-04-22; retired 2026-07-23 · source: https://developers.openai.com/api/docs/changelog#2025-09-23 - [GPT-5.1-Codex](/record/gpt-5-1-codex.md): released 2025-11-13; deprecated 2026-04-22; retired 2026-07-23 · source: https://developers.openai.com/api/docs/changelog#2025-11-13 - [GPT-5.1-Codex-Max](/record/gpt-5-1-codex-max.md): released 2025-12-04; deprecated 2026-04-22; retired 2026-07-23 · source: https://developers.openai.com/api/docs/changelog#2025-12-04 - [GPT-5.2-Codex](/record/gpt-5-2-codex.md): released 2026-01-14; deprecated 2026-04-22; retired 2026-07-23 · source: https://developers.openai.com/api/docs/changelog#2026-01-14 - [GPT-5.3-Codex-Spark](/record/gpt-5-3-codex-spark.md): released 2026-02-12 · source: https://openai.com/index/introducing-gpt-5-3-codex-spark - [GPT-5.3-Codex](/record/gpt-5-3-codex.md): released 2026-02-24; deprecated 2026-10-01 · source: https://developers.openai.com/api/docs/changelog#2026-02-24 ## Get this data - JSON: /v1/models/gpt - MCP: entity_state(entity: "") for one model; timeline(entity: "", predicates: ["model_release", "predecessor", "deprecated", "retired"]) for its rows - Every family: /models.md --- AsOf is a temporal fact ledger: a structured, dated, sourced record of what is true and what changed, built for AI retrieval.