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OpenAI: o1 API Pricing

OpenAI: o1 is an API model from openai. It costs $15 per 1M input tokens and $60 per 1M output tokens, with cached input at $7.5. Its context window is 200,000 tokens with up to 100,000 output tokens. A workload of 10M input + 2M output tokens costs about $270 per month.
Input
$15
per 1M tokens
Output
$60
per 1M tokens
Cached input
$7.5
per 1M tokens
Context window
200K
200,000 tokens
Blended (80/20)
$24
per 1M tokens

The latest and strongest model family from OpenAI, o1 is designed to spend more time thinking before responding. The o1 model series is trained with large-scale reinforcement learning to reason...

How much does OpenAI: o1 cost for a real workload?

At 10M input + 2M output tokens per month, OpenAI: o1 costs about $270 ($150 input + $120 output). Try your own volumes in the cost calculator.

What are cheaper alternatives to OpenAI: o1?

Where to run OpenAI: o1

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: o1 with other models

OpenAI: o1 vs OpenAI: gpt-oss-20bOpenAI: o1 vs OpenAI: gpt-oss-20b (batch)OpenAI: o1 vs OpenAI: gpt-oss-120b (batch)OpenAI: o1 vs OpenAI: GPT-5 Nano (batch)OpenAI: o1 vs OpenAI: GPT-4.1 Nano (batch)OpenAI: o1 vs OpenAI: GPT-6 Luna Pro (batch)

Frequently asked questions

How much does OpenAI: o1 cost?

OpenAI: o1 costs $15 per 1M input tokens and $60 per 1M output tokens (list price, snapshot October 22, 2026). At 10M input + 2M output tokens per month that is about $270.

What is the context window of OpenAI: o1?

OpenAI: o1 has a context window of 200,000 tokens and can return up to 100,000 output tokens per response.

What are cheaper alternatives to OpenAI: o1?

Cheaper models include OpenAI: GPT-5 Pro (batch) ($7.5 in / $60 out), OpenAI: GPT Astra Latest ($10 in / $50 out), OpenAI: GPT-6 Astra ($10 in / $50 out). See the full list on this page.

Is OpenAI: o1 free to use?

No. OpenAI: o1 is a paid model at $15 input / $60 output per 1M tokens. 21 free models are listed on the free models page.

Provider: openai · Model ID: openai/o1 · Modality: text+image+file->text · Price snapshot October 22, 2026, refreshed daily. How we collect prices