Chat-tuned GPT-5.1 for polished assistants, writing, and product conversations
Specification
openai listing
Context
128K
Max output
16K
Released
2025-11-13
Knowledge cutoff
2024-09-30
Retires
2026-07-23
Open weights
no
Input
text, image
Output
text
Price
US dollars per million tokens · openai list price
Input
$1.25
Output
$10.00
Cache read
$0.125
Available from 7 hosts
| Host | In $/M | Out $/M | Cache rd | Cache wr | Context | Output | Retires |
|---|---|---|---|---|---|---|---|
| openaivendor | $1.25 | $10.00 | $0.125 | — | 128K | 16K | 2026-07-23 |
| 302ai | $1.25 | $10.00 | — | — | 128K | 16K | — |
| abacus | $1.25 | $10.00 | — | — | 400K | 128K | — |
| azure | $1.25 $1.375 | $10.00 $11.00 | $0.125 $0.1375 | — | 112K | 16K | 2026-06-29 |
| helicone | $1.25 | $10.00 | $0.125 | — | 128K | 16K | — |
| merge-gateway | $1.25 | $10.00 | $0.125 | — | 128K | 16K | — |
| orcarouter | $1.25 | $10.00 | $0.125 | — | 128K | 16K | — |
Price history
append-only observations · a listing writes a row only when its price moves
| Date | Host | Field | $/M |
|---|---|---|---|
| 2026-09-02 | azure | Cache read | $0.14 |
| 2026-09-17 | azure | Cache read | $0.1375 |
| 2026-09-25 | azure | Cache read | $0.125 |
| 2026-09-02 | openai | Cache read | $0.125 |
| 2026-09-24 | openai | Cache read | $0.125 |
| 2026-09-02 | azure | Input | $1.38 |
| 2026-09-17 | azure | Input | $1.375 |
| 2026-09-25 | azure | Input | $1.25 |
| 2026-09-02 | openai | Input | $1.25 |
| 2026-09-24 | openai | Input | $1.25 |
| 2026-09-02 | azure | Output | $11.00 |
| 2026-09-25 | azure | Output | $10.00 |
| 2026-09-02 | openai | Output | $10.00 |
| 2026-09-24 | openai | Output | $10.00 |
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