OpenAI
Model timelines and latest releases from OpenAI.
Models
GPT
Latest: 5.5
OpenAI's flagship large language model series.
View model versionsGPT Sol
Latest: 6.1
OpenAI's high-capability tier in the durable Sol/Terra/Luna family: complex coding and agentic workflows at a lower cost than Astra.
View model versionsGPT Terra
Latest: 5.6
OpenAI's balanced tier for everyday knowledge work and agentic tasks, positioned between Sol and Luna on intelligence, speed, and cost.
View model versionsGPT Luna
Latest: 6
OpenAI's fast, affordable volume tier in the Sol/Terra/Luna family: strong everyday capability at the lowest API pricing in each generation.
View model versionsGPT Astra
Latest: 6
OpenAI's GPT-6 generation flagship for computer use, coding, cybersecurity, science, and professional work.
View model versionsGPT Image
Latest: 2.5 Flare
OpenAI's image generation and editing models behind ChatGPT Images and the Images API.
View model versionsGPT Live
Latest: 1
OpenAI's full-duplex voice models for real-time conversations that listen and speak at the same time, then delegate reasoning to a backend agent.
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