LLM prices per 1M tokens

264 models · 161 price changes

o3

OpenAI · Reasoning · 200K context · released Apr 16, 2025 · checked 12h ago

o3 is a well-rounded and powerful model across domains.

Ways to buy 1

Way to buyIn / out per 1M
OpenAI API
The lab's own API · cached $0.5
$2 / $8List price

USD per 1M tokens; batch $1 in, $4 out on the lab's API. Regions are separate routes.

Through a gateway

Your own numbers

100M input and 20M output tokens a month: $360.00 direct.

A dash: not on that gateway's own model list. No published token fee: Martian Gateway, Portkey, TrueFoundry AI Gateway.

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About o3

Takes image, text, files in and returns text. First listed Apr 23, 2025. Up to 100K output tokens. Blended price $3.5 per 1M tokens at 3 input to 1 output. Model id o3.

Price history

$3$10$302026Apr 23, 2025Output $8Input $2

List price since Apr 23, 2025, from Internet Archive snapshots of the OpenRouter catalog, then daily reads.

  • Price cutJun 13, 20251 year ago-80%
    o3

    OpenAI cut its API price: input $10 to $2 and output $40 to $8 per 1M tokens.

Questions

How much does o3 cost?

$2 per million input tokens and $8 per million output tokens, with cached input at $0.5, or $1 and $4 through the Batch API.

What is the context window of o3?

200K tokens, with up to 100K tokens of output.

Has o3's price changed?

Yes. The output price went from $40 to $8, first seen Jun 13, 2025.