OpenAI
GPT-5.6
Frontier GPT-5.6 model for complex professional work, coding, and agentic workflows
gpt-5.6Context
1.1M
Max output
128K
Input $/M
$5.00
Output $/M
$30.00
Cache read $/M
$0.50
Cache write $/M
$6.25
Against the catalogue
Context window1.1M
Larger than 99% of the 5,751 models listed
Input price$5.00
Cheaper than 5% of priced models
Capabilities
Reasoningsupported
Tool callingsupported
Structured outputsupported
Attachmentssupported
Temperaturenot supported
Open weightsnot supported
Interleaved thinkingnot supported
Modalities
Input
TextImagePDF
Output
Text
Reasoning controls
effortnone, low, medium, high, xhigh, maxPricing detail
| Rate | Base $/M | Over 200K $/M |
|---|---|---|
| Input | $5.00 | $10.00 |
| Output | $30.00 | $45.00 |
| Cache read | $0.50 | $1.00 |
| Cache write | $6.25 | $12.50 |
Tiers
- context ≥ 272K$10.00 in / $45.00 out
Experimental modes
fast2× base input price| Rate | fast $/M | Base $/M |
|---|---|---|
| Input | $10.00 | $5.00 |
| Output | $60.00 | $30.00 |
| Cache read | $1.00 | $0.50 |
| Cache write | $12.50 | $6.25 |
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