Blog

Product updates, guides, and engineering notes from the team.

GPT Astra, GPT Sol, GPT Luna and GPT Aurora (red, blue, green) explained

What are GPT-6 Astra, GPT-6 Sol and GPT-6 Luna, how much do they cost, and what are the unannounced GPT Aurora red, blue and green models? A plain-English guide, plus how GPT Astar compares.

Oct 18, 2026

GPT Astar Team

What is GPT Astar? Meet the AI assistant with 7 specialist models

GPT Astar is an AI assistant for writing, coding, study, translation and long documents. Meet the GPT Astar model family, see which model fits which job, and what it costs.

Oct 18, 2026

GPT Astar Team