Frontier GPT-5.6 model for complex professional work, coding, and agentic workflows
Specification
openai listing
Context
1.1M
Max output
128K
Released
2026-07-09
Knowledge cutoff
2026-02-16
Retires
—
Open weights
no
Input
text, image, pdf
Output
text
Price
US dollars per million tokens · openai list price
Input
$4.00
Output
$20.00
Cache read
$0.40
Cache write
$5.00
Batch and priority prices
US dollars per million tokens · per listing
| Price | Listing | $/M |
|---|---|---|
| Batch input | openai | $2.00 |
| Batch output | openai | $10.00 |
| Priority input | azure | $8.00 |
| Priority input | azure | $8.80 |
| Priority output | azure | $40.00 |
| Priority output | azure | $44.00 |
Batch input is 50% below the interactive input price at the same listing.
Long-context price tiers
the rate above each context threshold
| Above | Price | $/M |
|---|---|---|
| 272K | cache creation input token cost above 12hr | $20.00 |
| 272K | Cache read | $0.80 |
| 272K | Cache write | $10.00 |
| 272K | Input | $8.00 |
| 272K | Output | $30.00 |
Available from 3 hosts
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 | $0.50 |
| 2026-09-26 | azure | Cache read | $0.40 |
| 2026-09-02 | azure | Cache write | $6.25 |
| 2026-09-26 | azure | Cache write | $5.00 |
| 2026-09-02 | azure | Input | $5.00 |
| 2026-09-26 | azure | Input | $4.00 |
| 2026-09-02 | azure | Output | $30.00 |
| 2026-09-26 | azure | Output | $20.00 |
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