The author tested GPT-6 Astra's image generation capabilities by creating pelican SVGs at various reasoning levels and compared them against GPT-5.6 Sol, Terra, and Luna. Astra produced significantly better images at every level, used fewer input tokens, and was surprisingly cost-effective despite a higher per-token price.
Background
OpenAI's GPT-6 Astra represents the latest generation of their multimodal models, with rumored improvements in visual generation quality. The GPT-5.6 series (Sol, Terra, Luna) was the previous generation widely used for image generation tasks.
- Source
- Simon Willison
- Published
- Sep 5, 2026 at 07:59 AM
- Score
- 6.0 / 10