How much does o1-pro cost per month?

For a chatbot handling 10,000 requests a day with 1,000 input and 500 output tokens each, o1-pro costs about $135,000 per month at OpenAI's list prices ($150.00 per 1M input tokens, $600.00 per 1M output tokens).

Does o1-pro support prompt caching?

No cache read price is published for o1-pro.

How long is o1-pro's context window?

o1-pro accepts up to 200,000 tokens (200K) of context and returns up to 100,000 tokens per response.

o1-pro API Pricing

OpenAI has deprecated this model. The price is kept here for reference; check the provider's documentation before building on it.

OpenAI · released Mar 19, 2025 · 200K context · API model ID o1-pro

o1-pro by OpenAI API pricing: $150.00 per 1M input tokens and $600.00 per 1M output tokens (provider list price via models.dev, Oct 10, 2026).

Prices

o1-pro prices, USD per 1M tokens
Price	USD per 1M tokens
Input	$150.00
Output	$600.00
Cache read	Not published
Cache write	Not published

OpenAI's list price for its own API, as compiled by models.dev and checked Oct 10, 2026, 09:00 UTC. Prices on cloud platforms and resellers can differ. Provider documentation

Estimated monthly cost

$135,000

per month

per day: $4,500
per request: $0.45

Cost = input tokens × input price + output tokens × output price, 30 days a month. Cached input uses the cache read price. Cache write fees are not included.

Compare this workload across models

Monthly cost by workload

Workload	Per month
Chatbot1,000 in / 500 out tokens, 10,000 requests a day	$135,000/mo
RAG8,000 in / 500 out tokens, 5,000 requests a day	$225,000/mo
Coding agent50,000 in / 2,000 out tokens, 1,000 requests a day, 80% cached input	$261,000/mo

Context and capabilities

Context: 200,000 tokens
Max output: 100,000 tokens
Input: text, image
Output: text
Knowledge cutoff: September 2023
Open weights: No
Tool calling: Yes
Reasoning: Yes
Structured outputs: Yes

Capabilities and limits as listed by models.dev.

Similarly priced models

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Kimi K3 · $3.00 in / $15.00 out
Gemini 3.1 Pro Preview · $2.00 in / $12.00 out

Price history

No price changes since we started tracking on Oct 8, 2026.

Questions

How much does o1-pro cost per month?: For a chatbot handling 10,000 requests a day with 1,000 input and 500 output tokens each, o1-pro costs about $135,000 per month at OpenAI's list prices ($150.00 per 1M input tokens, $600.00 per 1M output tokens).
Does o1-pro support prompt caching?: No cache read price is published for o1-pro.
How long is o1-pro's context window?: o1-pro accepts up to 200,000 tokens (200K) of context and returns up to 100,000 tokens per response.