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OpenAI: GPT-6.1 Terra Pro API Pricing
GPT-6.1 Terra Pro is the same underlying model as [GPT-6.1 Terra](https://openrouter.ai/openai/gpt-6.1-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-6.1 Terra Pro cost for a real workload?
At 10M input + 2M output tokens per month, OpenAI: GPT-6.1 Terra Pro costs about $20 ($10 input + $10 output). Try your own volumes in the cost calculator.
What are cheaper alternatives to OpenAI: GPT-6.1 Terra Pro?
- Qwen: Qwen3.7 Max — $1.475 in / $4.425 out per 1M
- OpenAI: GPT-5.1 (batch) — $0.625 in / $5 out per 1M
- OpenAI: GPT-5 (batch) — $0.625 in / $5 out per 1M
- Mistral: Mistral Large 4 — $1.36 in / $4.18 out per 1M
- Meta: Muse Spark Open — $1.25 in / $4.25 out per 1M
- Meta: Muse Spark 1.3 — $1.25 in / $4.25 out per 1M
Where to run OpenAI: GPT-6.1 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 · CometAPI: one API for 500+ models (GPT, Claude, Gemini and more) at about 80% of official prices. 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 →Run it on CometAPI →
Disclosure: links to these platforms may be affiliate links — if you sign up or buy through them, LLMPrices may earn a commission at no extra cost to you.
Compare OpenAI: GPT-6.1 Terra Pro with other models
OpenAI: GPT-6.1 Terra Pro vs OpenAI: gpt-oss-20bOpenAI: GPT-6.1 Terra Pro vs OpenAI: gpt-oss-20b (batch)OpenAI: GPT-6.1 Terra Pro vs OpenAI: gpt-oss-120b (batch)OpenAI: GPT-6.1 Terra Pro vs OpenAI: GPT-5 Nano (batch)OpenAI: GPT-6.1 Terra Pro vs OpenAI: GPT-4.1 Nano (batch)OpenAI: GPT-6.1 Terra Pro vs OpenAI: GPT-6 Luna Pro (batch)
Frequently asked questions
How much does OpenAI: GPT-6.1 Terra Pro cost?
OpenAI: GPT-6.1 Terra Pro costs $1 per 1M input tokens and $5 per 1M output tokens (list price, snapshot October 28, 2026). At 10M input + 2M output tokens per month that is about $20.
What is the context window of OpenAI: GPT-6.1 Terra Pro?
OpenAI: GPT-6.1 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-6.1 Terra Pro?
Cheaper models include Qwen: Qwen3.7 Max ($1.475 in / $4.425 out), OpenAI: GPT-5.1 (batch) ($0.625 in / $5 out), OpenAI: GPT-5 (batch) ($0.625 in / $5 out). See the full list on this page.
Is OpenAI: GPT-6.1 Terra Pro free to use?
No. OpenAI: GPT-6.1 Terra Pro is a paid model at $1 input / $5 output per 1M tokens. 19 free models are listed on the free models page.
Provider: openai · Model ID: openai/gpt-6.1-terra-pro · Modality: text+image+file->text · Price snapshot October 28, 2026, refreshed daily. How we collect prices