OpenAI API · verified September 25, 2026
GPT-5.6 Sol API pricing: $4 in / $20 out
Promotional price until Nov 21, 2026; list price is $5 / $30. Promo price
Input /1M$4
Output /1M$20
Context1.05M
ReleasedJul 2026
What real jobs cost
| 1,000 short chats | $11.20 |
| Summarise 100 long reports (20k tokens each) | $10.00 |
| Write a 90,000-word book | $2.48 |
| 10M input + 2M output tokens | $80.00 |
Estimates at the listed price. Use the calculator for your own numbers.
Similar-priced models
| Model | In | Out |
|---|---|---|
| GPT-6 Sol OpenAI | $2 | $10 |
| GPT-5.6 Terra OpenAI | $2 | $12 |
| Gemini 3.1 Pro Google | $2 | $12 |
| Claude Opus 5.5 Anthropic | $4 | $20 |
| Claude Opus 5 Anthropic | $5 | $25 |
| Claude Opus 4.8 Anthropic | $5 | $25 |
Price history
| Date | Price | What changed |
|---|---|---|
| Aug 21, 2026 | Promotion until Nov 21, 2026 |
Other OpenAI models
- GPT-6 Astra $10 / $50
- GPT-6 Sol $2 / $10
- GPT-6 Luna $0.10 / $0.50
- 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-5.6 Sol pricing questions
How much does GPT-5.6 Sol cost?
$4 per million input tokens and $20 per million output tokens, with a 1.05M context window. Promotional price until Nov 21, 2026; list price is $5 / $30.
How much does 1,000 chats cost on GPT-5.6 Sol?
About $11.20, assuming 800 input and 400 output tokens per chat.
Is there a cheaper alternative to GPT-5.6 Sol?
GPT-5.6 Terra ($2 / $12) costs about 44% 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.