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OpenAI: GPT-6.1 Terra API Pricing

OpenAI: GPT-6.1 Terra is an API model from openai. It costs $1 per 1M input tokens and $5 per 1M output tokens, with cached input at $0.05. Its context window is 1,050,000 tokens with up to 128,000 output tokens. A workload of 10M input + 2M output tokens costs about $20 per month. The official openai list price is $1 input / $5 output per 1M tokens, which matches the catalog price tracked here.
Input
$1
per 1M tokens
Output
$5
per 1M tokens
Cached input
$0.05
per 1M tokens
Context window
1.05M
1,050,000 tokens
Blended (80/20)
$1.8
per 1M tokens

GPT-6.1 Terra is the mid-tier model in OpenAI's GPT-6.1 series, priced below GPT-6.1 Sol. It is suited for everyday agentic, coding, and writing work, is particularly strong at understanding screenshots...

How much does OpenAI: GPT-6.1 Terra cost for a real workload?

At 10M input + 2M output tokens per month, OpenAI: GPT-6.1 Terra costs about $20 ($10 input + $10 output). Try your own volumes in the cost calculator.

What is the official OpenAI: GPT-6.1 Terra price?

Official (openai)Catalog (OpenRouter)
Input /1M$1$1
Output /1M$5$5
Cached input /1M$0.05$0.05

✓ Matches the official list price. Source: openai official pricing page, checked 2026-10-21.

Verified 2026-10-27: standard rate up to 272K input tokens; over 272K: $2/$7.50/$0.10.

What are cheaper alternatives to OpenAI: GPT-6.1 Terra?

Where to run OpenAI: GPT-6.1 Terra

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 with other models

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Frequently asked questions

How much does OpenAI: GPT-6.1 Terra cost?

OpenAI: GPT-6.1 Terra costs $1 per 1M input tokens and $5 per 1M output tokens (list price, snapshot October 27, 2026). At 10M input + 2M output tokens per month that is about $20.

What is the context window of OpenAI: GPT-6.1 Terra?

OpenAI: GPT-6.1 Terra 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?

Cheaper models include Qwen: Qwen3.7 Max ($1.475 in / $4.425 out), Z.ai: GLM 5.1 ($1.4 in / $4.4 out), OpenAI: GPT-5.1 (batch) ($0.625 in / $5 out). See the full list on this page.

Is OpenAI: GPT-6.1 Terra free to use?

No. OpenAI: GPT-6.1 Terra is a paid model at $1 input / $5 output per 1M tokens. 20 free models are listed on the free models page.

What is the official price of OpenAI: GPT-6.1 Terra?

On openai's official pricing page (checked 2026-10-21), OpenAI: GPT-6.1 Terra is listed at $1 per 1M input tokens and $5 per 1M output tokens. The catalog price tracked on this page matches it exactly.

Provider: openai · Model ID: openai/gpt-6.1-terra · Modality: text+image+file->text · Price snapshot October 27, 2026, refreshed daily. How we collect prices