GPT-5.6 Sol served by OpenAI through Vercel AI Gateway at 50% lower cost than other available inference providers. This promotion runs through September 18, 2026.
Specification
most-agreed values
Context
1.1M
Max output
128K
Released
2025-08-26
Knowledge cutoff
—
Retires
—
Open weights
no
Input
text, image, pdf
Output
text
Price
US dollars per million tokens · most-agreed
Input
$2.00
Output
$10.00
Cache read
$0.20
Cache write
$2.50
Available from 1 host
| Host | In $/M | Out $/M | Cache rd | Cache wr | Context | Output | Retires |
|---|---|---|---|---|---|---|---|
| kilo | $2.00 | $10.00 | $0.20 | $2.50 | 1.1M | 128K | — |
Price history
append-only observations · a listing writes a row only when its price moves
| Date | Host | Field | $/M |
|---|---|---|---|
| 2026-09-02 | kilo | Cache read | $0.25 |
| 2026-09-08 | kilo | Cache read | $0.20 |
| 2026-09-02 | kilo | Cache write | $3.125 |
| 2026-09-08 | kilo | Cache write | $2.50 |
| 2026-09-02 | kilo | Input | $2.50 |
| 2026-09-08 | kilo | Input | $2.00 |
| 2026-09-02 | kilo | Output | $15.00 |
| 2026-09-08 | kilo | Output | $10.00 |
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