GPT-5.6
GPT-5.6 is OpenAI's language model with a 1.1M context window and up to 128K output tokens, available from 2 providers, starting at $4.00 / 1M input and $20.00 / 1M output. A frontier-class LLM in the GPT-5.6 family, serving as the default routing target for the gpt-5.6 alias.
Capabilities
Input2/5
Text·
Image✓
Audio·
Video·
PDF✓
Output1/5
Text✓
Image·
Audio·
Video·
Embedding·
Capabilities6/13
Reasoning✓
Adaptive Reasoning·
Function Calling✓
Parallel Function Calling✓
Structured Outputs✓
Native JSON Schema·
Web Search✓
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching✓
Assistant Prefill·
Pricing by Provider
US Dollar ($)
Per 1M tokens
| Provider | Standard | Flex | Fast | Batch | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Input $ / 1M | Output $ / 1M | Cache Read $ / 1M | Cache Write 5m $ / 1M | Input $ / 1M | Output $ / 1M | Cache Read $ / 1M | Cache Write 5m $ / 1M | Input $ / 1M | Output $ / 1M | Cache Read $ / 1M | Cache Write 5m $ / 1M | Input $ / 1M | Output $ / 1M | |
| $5.50 | $33.00 | $0.55 | $6.88 | — | — | — | — | $11.00 | $66.00 | $1.10 | $13.75 | — | — | |
| $5.00 | $30.00 | $0.5 | $6.25 | — | — | — | — | $10.00 | $60.00 | $1.00 | $12.50 | — | — | |
| $4.00 | $20.00 | $0.4 | $5.00 | $2.00 | $10.00 | $0.2 | $2.50 | $8.00 | $40.00 | $0.8 | $10.00 | $2.00 | $10.00 | |
Cost Calculator
US Dollar ($)
Preset:
Versions
| Version | Released | Context | Input / 1M | Output / 1M | Status |
|---|---|---|---|---|---|
| GPT-5.6 Sol | 1.1M | $2.00 | $10.00 | Available | |
| GPT-5.6 Terra | 1.1M | $2.00 | $12.00 | Available | |
| GPT-5.6 Luna | 1.1M | $0.200 | $1.20 | Available | |
| GPT-5.5 | 1.1M | $5.00 | $30.00 | Available | |
| GPT-5.4 Mini | 400K | $0.750 | $4.50 | Available | |
| GPT-5.4 Nano | 400K | $0.200 | $1.25 | Available | |
| GPT-5.4 | 1.1M | $2.50 | $15.00 | Available | |
| GPT-5.3 Codex | 400K | $1.75 | $14.00 | Available | |
| GPT-5.2 Codex | 400K | $1.75 | $14.00 | Deprecated | |
| GPT-5.2 | 410K | $1.75 | $14.00 | Available | |
| GPT-5.6 | — | 1.1M | $4.00 | $20.00 | Current |