How much does OpenAI: o3 cost per 1M tokens?

OpenAI: o3 costs $2.00 per 1M input tokens and $8.00 per 1M output tokens on the standard tier. Cached input is $0.500 per 1M.

What is OpenAI: o3's context window?

OpenAI: o3 accepts up to 200,000 tokens in a single request, and can return up to 100,000 output tokens.

Is there a cheaper OpenRouter model than OpenAI: o3?

Yes. OpenAI: GPT-3.5 Turbo is $0.500 per 1M input tokens versus $2.00 for OpenAI: o3, with a 16,385 token context window.

Where does this OpenAI: o3 price come from?

From the OpenRouter catalogue, because OpenRouter does not publish machine-readable pricing. OpenRouter is a reseller, so its rate can differ from OpenRouter's own — verify before committing spend.

OpenAI: o3 pricing

o3 is a well-rounded and powerful model across domains. It sets a new standard for math, science, coding, and visual reasoning tasks. OpenAI: o3 from OpenRouter costs $2.00 per 1M input tokens and $8.00 per 1M output tokens. Cached input is $0.500 per 1M. Context window 200,000 tokens.

API id openai/o3 · OpenRouter · source · updated 2026-09-25 · general-purpose

$2.00

Input / 1M tokens

$8.00

Output / 1M tokens

$0.500

Cached input / 1M

200K

Context window

OpenAI: o3 specifications

Provider: OpenRouter
API id: openai/o3
Model type: general-purpose
Context window: 200K tokens
Max output: 100K tokens
Currency: USD
Price source: Provider API
Last checked: 2026-09-25

o3 across providers

The same model, priced by every seller we track. Ranked by the cost of 1M input + 1M output tokens, standard tier; savings measured against buying from the vendor directly.

Provider	Input /1M	Cached /1M	Output /1M	1M in + 1M out	vs vendor
OpenAIVendorCheapest	$2.00	$0.500	$8.00	$10.00	—
OpenRouterHostviewing	$2.00	$0.500	$8.00	$10.00	—

What OpenAI: o3 costs in practice

Estimated cost at common usage volumes
Workload	Input tokens	Output tokens	Estimated cost
Short chat turn	1,000	500	$0.0060
Document summary	50,000	2,000	$0.12
1M tokens in, 200K out	1,000,000	200,000	$3.60

Estimates use the standard tier and ignore caching discounts, so real bills with repeated prompt prefixes are typically lower.

Common questions

How much does OpenAI: o3 cost per 1M tokens?: OpenAI: o3 costs $2.00 per 1M input tokens and $8.00 per 1M output tokens on the standard tier. Cached input is $0.500 per 1M.
What is OpenAI: o3's context window?: OpenAI: o3 accepts up to 200,000 tokens in a single request, and can return up to 100,000 output tokens.
Is there a cheaper OpenRouter model than OpenAI: o3?: Yes. OpenAI: GPT-3.5 Turbo is $0.500 per 1M input tokens versus $2.00 for OpenAI: o3, with a 16,385 token context window.
Where does this OpenAI: o3 price come from?: From the OpenRouter catalogue, because OpenRouter does not publish machine-readable pricing. OpenRouter is a reseller, so its rate can differ from OpenRouter's own — verify before committing spend.

Head-to-head comparisons

Compare OpenAI: o3 with another model →

Other OpenRouter models

See all OpenRouter pricing →