GPT-5.6 Terra Pro
OpenAIGPT-5.6 Terra Pro is the same underlying model as [GPT-5.6 Terra](https://openrouter.ai/openai/gpt-5.6-terra), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. **Cost note:** pro mode spends far more...
In
$2.00
Out
$12.00
Blended
$4.50
Where to buy this model
2 access routes| Route | In | Out | Blended | vs |
|---|---|---|---|---|
| $1.00 | $6.00 | $2.25 | - | |
| $2.00 | $12.00 | $4.50 | +100% |
● official API · ● cloud platform · ● inference host · USD per 1M tokens. Same model, different providers - price and quantization vary.
- Ctx
- 1.05M
- max output
- 128K
- cache read /1M
- $0.20
- Family
- gpt
- Modalities
- file · image · text
- Features
- json · reasoning · tools
Live pricing, updated 2026-11-03.
OpenAI models at a similar price
| Model | In | Out | Ctx |
|---|---|---|---|
| GPT-4o | $2.5 | $10 | 128K |
| GPT-5.6 Terra | $2 | $12 | 1.05M |
| GPT-5.6 Terra Pro · this model | $2 | $12 | 1.05M |
| GPT-5.2 | $1.75 | $14 | 400K |
| GPT-5.2 Chat | $1.75 | $14 | 128K |
| GPT-5.2-Codex | $1.75 | $14 | 400K |