OpenAI API · verified September 25, 2026
GPT-6 Astra API pricing: $10 in / $50 out
OpenAI's most capable model. Long context above 272K costs more.
What real jobs cost
| 1,000 short chats | $28.00 |
| Summarise 100 long reports (20k tokens each) | $25.00 |
| Write a 90,000-word book | $6.20 |
| 10M input + 2M output tokens | $200.00 |
Estimates at the listed price. Use the calculator for your own numbers.
Similar-priced models
| Model | In | Out |
|---|---|---|
| GPT-5.6 Terra OpenAI | $2 | $12 |
| GPT-5.6 Sol OpenAI | $4 | $20 |
| Claude Opus 5.5 Anthropic | $4 | $20 |
| Claude Opus 5 Anthropic | $5 | $25 |
| Claude Opus 4.8 Anthropic | $5 | $25 |
| Claude Fable 5.1 Anthropic | $10 | $50 |
Price history
No price or plan changes recorded since we started tracking. We re-check every week.
Other OpenAI models
- GPT-6 Sol $2 / $10
- GPT-6 Luna $0.10 / $0.50
- GPT-5.6 Sol $4 / $20
- GPT-5.6 Terra $2 / $12
- GPT-5.6 Luna $0.20 / $1.20
- GPT-5.5 pro $30 / $180
- GPT-5.4 nano $0.20 / $1.25
GPT-6 Astra pricing questions
How much does GPT-6 Astra cost?
$10 per million input tokens and $50 per million output tokens, with a 1.05M context window. OpenAI's most capable model. Long context above 272K costs more.
How much does 1,000 chats cost on GPT-6 Astra?
About $28.00, assuming 800 input and 400 output tokens per chat.
Is there a cheaper alternative to GPT-6 Astra?
Claude Opus 5 ($5 / $25) costs about 50% less on a typical 3:1 input/output mix. Test whether its quality is enough for your task.
Sources
Checked against the official pages below on September 25, 2026. Prices are USD before local tax. See how we verify prices and the change log.