GPT-5.6 Terra
GPT-5.6 Terra is OpenAI's language model with a 1.1M context window and up to 128K output tokens, available from 6 providers, starting at $2.00 / 1M input and $12.00 / 1M output. A balanced intelligence-and-cost LLM in the GPT-5.6 family, corresponding to the mini tier of earlier GPT-5 families.
| Benchmarks | |
|---|---|
| Intelligence Index | #11 |
| Coding Index | #4 |
| GPQA | #15 |
| HLE | #14 |
| IFBench | #56 |
| Time to First Token | #349 |
| SciCode | #17 |
| LCR | #8 |
| TerminalBench Hard | #3 |
| TAU2 | #91 |
| Output TPS | #91 |
Capabilities
Input3/5
Text✓
Image✓
Audio·
Video·
PDF✓
Output1/5
Text✓
Image·
Audio·
Video·
Embedding·
Capabilities7/13
Reasoning✓
Adaptive Reasoning·
Function Calling✓
Parallel Function Calling✓
Structured Outputs✓
Native JSON Schema✓
Web Search✓
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching✓
Assistant Prefill·
Pricing by Provider
US Dollar ($)
Per 1M tokens
| Provider | Standard | Flex | Fast | Long context | Batch | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Input $ / 1M | Output $ / 1M | Cache Read $ / 1M | Cache Write 5m $ / 1M | Web Search $ / request | 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 | Input $ / 1M | Output $ / 1M | Cache Read $ / 1M | Web Search $ / request | |
| $2.20 | $13.20 | $0.22 | $2.75 | N/A | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
| $2.00 | $12.00 | $0.2 | $2.50 | N/A | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
| $2.20 | $13.20 | $0.22 | N/A | N/A | — | — | — | — | $5.50 | $33.00 | $0.55 | N/A | — | — | — | — | — | — | |
| $2.00 | $12.00 | $0.2 | N/A | N/A | — | — | — | — | $4.00 | $24.00 | $0.4 | N/A | — | — | — | — | — | — | |
| $2.00 | $12.00 | $0.2 | $2.50 | N/A | $1.00 | $6.00 | $0.1 | $1.25 | $4.00 | $24.00 | $0.4 | $5.00 | — | — | $1.00 | $6.00 | $0.1 | N/A | |
| $2.00 | $12.00 | $0.2 | $2.50 | $0.010 | — | — | — | — | — | — | — | — | — | — | N/A | N/A | N/A | N/A | |
| — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | $1.00 | $6.00 | $0.1 | $0.010 | |
| $2.40 | $14.40 | N/A | N/A | N/A | — | — | — | — | — | — | — | — | $4.80 | $21.60 | $1.20 | $7.20 | N/A | N/A | |
| $2.00 | $12.00 | $0.2 | $2.50 | N/A | $1.00 | $6.00 | $0.1 | N/A | $4.00 | $24.00 | $0.4 | N/A | — | — | — | — | — | — | |
| $8.00 | $36.00 | $0.8 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | $2.50 | — | — | — | — | — | — | |
Cost Calculator
US Dollar ($)
Preset:
Versions
| Version | Released | Context | Input / 1M | Output / 1M | Status |
|---|---|---|---|---|---|
| GPT-5.6 Terra | 1.1M | $2.00 | $12.00 | Current | |
| GPT-5.6 Sol | 1.1M | $2.00 | $10.00 | 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-5.1 | 410K | $1.25 | $10.00 | Available |