Compatibility alias that routes to GPT 5.6 Terra, the latest supported GPT Terra model.
Specification
most-agreed values
Context
1.1M
Max output
128K
Released
2026-09-11
Knowledge cutoff
2026-02-16
Retires
—
Open weights
no
Input
text, image, pdf
Output
text
Price
US dollars per million tokens · most-agreed
Input
$1.00
Output
$5.00
Cache read
$0.05
Cache write
$1.25
Available from 3 hosts
| Host | In $/M | Out $/M | Cache rd | Cache wr | Context | Output | Retires |
|---|---|---|---|---|---|---|---|
| kilo | $1.00 | $5.00 | $0.05 | $1.25 | 1.1M | 128K | — |
| nano-gpt | $1.00 | $5.00 | $0.05 | $1.25 | 1.1M | 128K | — |
| openrouter | $1.00 | $5.00 | $0.05 | $1.25 | 1.1M | 128K | — |
Price history
append-only observations · a listing writes a row only when its price moves
| Date | Host | Field | $/M |
|---|---|---|---|
| 2026-09-12 | kilo | Cache read | $0.20 |
| 2026-10-27 | kilo | Cache read | $0.05 |
| 2026-09-12 | nano-gpt | Cache read | $0.20 |
| 2026-10-27 | nano-gpt | Cache read | $0.05 |
| 2026-09-12 | openrouter | Cache read | $0.20 |
| 2026-09-19 | openrouter | Cache read | $0.20 |
| 2026-10-10 | openrouter | Cache read | $0.20 |
| 2026-10-27 | openrouter | Cache read | $0.05 |
| 2026-09-12 | kilo | Cache write | $2.50 |
| 2026-10-27 | kilo | Cache write | $1.25 |
| 2026-09-12 | nano-gpt | Cache write | $2.50 |
| 2026-10-27 | nano-gpt | Cache write | $1.25 |
| 2026-09-12 | openrouter | Cache write | $2.50 |
| 2026-09-19 | openrouter | Cache write | $2.50 |
| 2026-10-10 | openrouter | Cache write | $2.50 |
| 2026-10-27 | openrouter | Cache write | $1.25 |
| 2026-09-12 | kilo | Input | $2.00 |
| 2026-10-27 | kilo | Input | $1.00 |
| 2026-09-12 | nano-gpt | Input | $2.00 |
| 2026-10-27 | nano-gpt | Input | $1.00 |
| 2026-09-12 | openrouter | Input | $2.00 |
| 2026-09-19 | openrouter | Input | $2.00 |
| 2026-10-10 | openrouter | Input | $2.00 |
| 2026-10-27 | openrouter | Input | $1.00 |
| 2026-09-12 | kilo | Output | $12.00 |
| 2026-10-27 | kilo | Output | $5.00 |
| 2026-09-12 | nano-gpt | Output | $12.00 |
| 2026-10-27 | nano-gpt | Output | $5.00 |
| 2026-09-12 | openrouter | Output | $12.00 |
| 2026-09-19 | openrouter | Output | $12.00 |
| 2026-10-10 | openrouter | Output | $12.00 |
| 2026-10-27 | openrouter | Output | $5.00 |
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