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OpenAI: GPT-5.6 Terra Pro API Pricing
GPT-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...
How much does OpenAI: GPT-5.6 Terra Pro cost for a real workload?
At 10M input + 2M output tokens per month, OpenAI: GPT-5.6 Terra Pro costs about $44 ($20 input + $24 output). Try your own volumes in the cost calculator.
What are cheaper alternatives to OpenAI: GPT-5.6 Terra Pro?
- MoonshotAI: Kimi K3 (batch) — $2.28 in / $11.4 out per 1M
- Xiaomi: MiMo-V2.6-Pro-UltraSpeed — $4.35 in / $8.7 out per 1M
- OpenAI: GPT Audio — $2.5 in / $10 out per 1M
- Cohere: Command A — $2.5 in / $10 out per 1M
- OpenAI: GPT-4o (2024-11-20) — $2.5 in / $10 out per 1M
- Cohere: Command R+ (08-2024) — $2.5 in / $10 out per 1M
Where to run OpenAI: GPT-5.6 Terra Pro
AI/ML API: one API key for 400+ models, including most models tracked here · Novita AI: pay-as-you-go APIs for open models (DeepSeek, Qwen, Llama and more) plus GPU cloud. Prices there follow each platform's own catalog and can differ from the list prices tracked here.
Run it on AI/ML API →Run it on Novita AI →
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Compare OpenAI: GPT-5.6 Terra Pro with other models
OpenAI: GPT-5.6 Terra Pro vs OpenAI: gpt-oss-20bOpenAI: GPT-5.6 Terra Pro vs OpenAI: gpt-oss-20b (batch)OpenAI: GPT-5.6 Terra Pro vs OpenAI: gpt-oss-120b (batch)OpenAI: GPT-5.6 Terra Pro vs OpenAI: GPT-5 Nano (batch)OpenAI: GPT-5.6 Terra Pro vs OpenAI: GPT-4.1 Nano (batch)OpenAI: GPT-5.6 Terra Pro vs OpenAI: GPT-6 Luna Pro (batch)
Frequently asked questions
How much does OpenAI: GPT-5.6 Terra Pro cost?
OpenAI: GPT-5.6 Terra Pro costs $2 per 1M input tokens and $12 per 1M output tokens (list price, snapshot October 22, 2026). At 10M input + 2M output tokens per month that is about $44.
What is the context window of OpenAI: GPT-5.6 Terra Pro?
OpenAI: GPT-5.6 Terra Pro has a context window of 1,050,000 tokens and can return up to 128,000 output tokens per response.
What are cheaper alternatives to OpenAI: GPT-5.6 Terra Pro?
Cheaper models include MoonshotAI: Kimi K3 (batch) ($2.28 in / $11.4 out), Xiaomi: MiMo-V2.6-Pro-UltraSpeed ($4.35 in / $8.7 out), OpenAI: GPT Audio ($2.5 in / $10 out). See the full list on this page.
Is OpenAI: GPT-5.6 Terra Pro free to use?
No. OpenAI: GPT-5.6 Terra Pro is a paid model at $2 input / $12 output per 1M tokens. 21 free models are listed on the free models page.
Provider: openai · Model ID: openai/gpt-5.6-terra-pro · Modality: text+image+file->text · Price snapshot October 22, 2026, refreshed daily. How we collect prices