Developer Tests GPT-6 Astra: Faster Than Expected, Priced Same as Sonnet
On September 9, developer revodavid shared the first hands-on impressions of GPT-6 Astra, covering speed, pricing, and real-world coding ability, with an overall positive verdict.
Confirmed
- Speed: Through GitHub Copilot, generation was faster than expected, with wait times only slightly longer than Sol — a negligible gap.
- Pricing: Cheaper than expected, at a 1x rate, the same as Sol and Sonnet.
- One-shot capability: With a 5-line prompt, Astra generated and got running the initial concept of an interactive Platonic solids geometry teaching app called "Becoming" in about 10 minutes; the final version took only about 1 hour of human effort.
- App details: "Becoming" features dual-path displays (face-decreasing/vertex-increasing), draggable rotation and zoom interactions, and faithfully realized his original concept in one shot, followed by several hours of multi-round prompt refinement.
- Interaction: The iterative design process through multi-turn conversation felt natural and smooth.
Why it matters
- Astra's performance in a real dev toolchain (GitHub Copilot) and its Sonnet-level pricing make it directly comparable in the coding model race; its ability to generate a working app from a minimal prompt in one shot shows its potential for rapid prototyping.
2026-09-09 ~ 2026-09-09 · 5 related posts
Primary sources
- GPT-6 Astra one-shots an educational app from a 5-line prompt in 10 minutes — revodavid · 2026-09-09
- [source] Dev one-shots an interactive Platonic solids app with GPT-6 Astra in about an hour — revodavid · 2026-09-09
- [source] GPT-6 Astra via GitHub Copilot: faster than expected, priced 1x — same as Sonnet — revodavid · 2026-09-09
- [source] First hands-on with Astra: faster than expected, priced at 1x like Sol and Sonnet — revodavid · 2026-09-09
1 near-duplicate retellings: revodavid