ChatGPT
ChatGPT is a conversational artificial intelligence chatbot developed by OpenAI and built on the company's GPT series of large language models.
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Showing 1-35 of 35 articles
GPT
GPT, short for Generative Pre-trained Transformer, is the name of a model family developed by OpenAI.
GPT-1
GPT-1 is the first model in the GPT (Generative Pre-trained Transformer) series, a 117-million-parameter, 12-layer decoder-only Transformer released by OpenAI on June 11, 2018 in the paper "Improving Language…
GPT-2
GPT-2 is a family of autoregressive language models introduced by OpenAI on February 14, 2019.
GPT-3
GPT-3 (Generative Pre-trained Transformer 3) is a family of decoder-only, autoregressive large language models developed by OpenAI.
GPT-3.5
GPT-3.5 is a family of large language models developed by OpenAI. OpenAI used the name for the series from which it fine-tuned the model behind the original ChatGPT research preview, launched on November 30
GPT-4
GPT-4 (Generative Pre-trained Transformer 4) is a large language model developed by OpenAI and released on March 14, 2023.
GPT-4 Turbo
GPT-4 Turbo is a family of large language models released by OpenAI as a faster, cheaper, and longer-context variant of GPT-4.
GPT-4.1
GPT-4.1 is a family of multimodal large language models developed by OpenAI and announced on April 14, 2025, with a 1 million token context window and a SWE-bench Verified coding score of 54.6%
GPT-4.1 mini
GPT-4.1 mini is a large language model developed by OpenAI and released on April 14, 2025 as the mid-size member of the GPT-4.1 family.
GPT-4.1 nano
GPT-4.1 nano is the smallest, fastest, and least expensive model in OpenAI's GPT-4.1 family of large language models, released on April 14, 2025.
GPT-4.5
GPT-4.5 is a large language model developed by OpenAI and released as a research preview on February 27, 2025, then deprecated and removed from the API on July 14, 2025, less than five months later.
GPT-4V (Vision)
GPT-4V, also written GPT-4V(ision) and read as "GPT-4 with vision," is the image-understanding capability that OpenAI added to its GPT-4 large language model, letting a user supply one or more images alongside…
GPT-5
GPT-5 is a family of proprietary large language models released by OpenAI on August 7, 2025.
GPT-5 Codex
GPT-5-Codex is a coding-specialised variant of OpenAI's GPT-5 model, announced on September 15, 2025 and tuned for agentic software engineering inside the OpenAI Codex product family.
GPT-5 Pro
GPT-5 Pro is a large language model developed by OpenAI and the highest-capability variant of the GPT-5 model family.
GPT-5.1
GPT-5.1 is a family of large language models developed by OpenAI and released on November 12, 2025.
GPT-5.2
GPT-5.2 is a large language model developed by OpenAI and released on December 11, 2025. It is the second major update to the GPT-5 series, succeeding GPT-5.1, which had been released about a month earlier.
GPT-5.3
GPT-5.3 is a family of large language models released by OpenAI in February and March 2026 as part of the GPT-5 lineage.
GPT-5.4
GPT-5.4 is a large language model developed by OpenAI and released on March 5, 2026.
GPT-5.5
GPT-5.5 is a large language model developed by OpenAI and released on April 23, 2026.
GPT-5.6
GPT-5.6 is a family of proprietary multimodal large language models developed by OpenAI. The family entered a limited preview on June 26, 2026, and became generally available on July 9, 2026.
GPT-6 Astra
GPT-6 Astra is an OpenAI model that the company began rolling out on September 3, 2026, describing it as "the world's most intelligent and aligned model" and as the successor to the GPT-5.6 family.
InstructGPT
InstructGPT is a family of language models released by OpenAI in January 2022 that take the base GPT-3 and fine-tune it to follow user instructions more helpfully, truthfully, and with less toxic output, using…
OpenAI
OpenAI is an American artificial intelligence research and deployment organization.
OpenAI API
The OpenAI API is a REST-based application programming interface that gives developers programmatic access to OpenAI's family of artificial intelligence models, including the GPT series of large language…
OpenAI o-series
The OpenAI o-series is a family of large language models developed by OpenAI that are trained with reinforcement learning to reason through an internal chain-of-thought before answering, making them OpenAI's…
OpenAI o1
OpenAI o1 is a family of proprietary large language models developed by OpenAI and trained to use additional computation before returning an answer.
OpenAI o1-mini
OpenAI o1-mini is a smaller, faster, and cheaper reasoning model released by OpenAI on September 12, 2024, alongside o1-preview, and optimized for science, technology, engineering, and mathematics (STEM) tasks…
OpenAI o1-pro
OpenAI o1-pro is the highest-compute variant of OpenAI's o1 reasoning model, designed to spend more inference-time compute so it "thinks harder" and returns the most reliable answers on the hardest…
OpenAI o3
OpenAI o3 is a family of reasoning-focused large language models developed by OpenAI and the second generation of the company's o-series reasoning models, best known for scoring 87.5% on the ARC-AGI…
OpenAI o3-mini
OpenAI o3-mini is a reasoning-focused large language model released by OpenAI on January 31, 2025, the second commercial member of the o-series after OpenAI o1 and a smaller, cheaper
OpenAI o3-pro
OpenAI o3-pro is a high-compute reasoning large language model released by OpenAI on June 10, 2025, designed as the professional, higher-reliability variant of the company's o3 reasoning model.
gpt-oss
gpt-oss is a family of open-weight large language models released by OpenAI on August 5, 2025, and OpenAI's first open-weight language models since GPT-2 in 2019.
o4-mini
OpenAI o4-mini is a compact reasoning model developed by OpenAI, released on April 16, 2025.