DALL-E 2
DALL-E 2 (stylized DALL·E 2) is a text-to-image generation system that OpenAI announced on April 6, 2022, capable of producing photorealistic 1024 by 1024 pixel images from a written prompt
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DALL-E 3
DALL-E 3 (stylized by OpenAI as DALL·E 3) is the third generation of OpenAI's text-to-image system, announced on September 20, 2023 and released to ChatGPT Plus and Enterprise subscribers in October 2023
GPT
GPT, short for Generative Pre-trained Transformer, is the name of a model family developed by OpenAI.
GPT Image 1
GPT Image 1 (API identifier gpt-image-1) is a natively multimodal image generation model developed by OpenAI, integrated into ChatGPT on March 25, 2025, and released as a standalone API on April 23, 2025.
GPT Image 2
GPT Image 2 (API model gpt-image-2, marketed inside the product as ChatGPT Images 2.0) is an image-generation model released by OpenAI on April 21, 2026.
GPT Image 2.5
GPT Image 2.5 is a family of image generation and editing models released by OpenAI on September 8, 2026.
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 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-4.5
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-4o
GPT-4o (Generative Pre-trained Transformer 4 Omni) is a natively multimodal large language model developed by OpenAI and announced on May 13, 2024 at the company's "Spring Update" livestream.
GPT-5
GPT-5 is a family of proprietary large language models released by OpenAI on August 7, 2025.
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.
GPT-Live
GPT-Live is a family of full-duplex voice models developed by OpenAI for continuous spoken interaction.
GPT-Transcribe
GPT-Transcribe (gpt-transcribe) and GPT-Live-Transcribe (gpt-live-transcribe) are two closed-weight speech-to-text models that OpenAI added to its API on July 28, 2026.
OpenAI Codex
OpenAI Codex is the brand OpenAI has used for two distinct generations of code-focused artificial intelligence products: a 2021 large language model that turned natural-language prompts into code
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 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…
Shap-E
Shap-E is a conditional generative model for 3D assets developed by OpenAI, introduced in the paper "Shap-E: Generating Conditional 3D Implicit Functions" by Heewoo Jun and Alex Nichol, submitted to arXiv on…
Sora 2
Sora 2 is a text-to-video and audio generation model developed by OpenAI, released on September 30, 2025, that OpenAI called "the GPT-3.5 moment for video." It succeeded the original Sora research preview from…
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.