Unofficial · Prices from OpenAI docs · Updated: 2026-09-05
GPT-6 Astra vs Sol Pricing: Why ~2.5× List Rate
On published list rates, GPT-6 Astra is about $10 per 1M input and $50 per 1M output, versus GPT-5.6 Sol at about $4 / $20 — roughly 2.5×. Confirm live prices on the official pages and compare on the LLM Pricing Leaderboard; run your token mix through the Astra calculator before you switch.
List rates from the shared table
| Model | Input / 1M | Output / 1M |
|---|---|---|
| GPT-6 Astra | $10 | $50 |
| GPT-5.6 Sol | $4 | $20 |
That gap is ≈2.5× on published Standard list rates. Confirm live on the official pricing page and side-by-side on the LLM Pricing Leaderboard.
Before you switch models, run your token mix through the GPT-6 Astra pricing calculator.