o3 is a well-rounded and powerful model across domains.
Ways to buy 1
| Way to buy | Input | Output | In / out per 1M | Cached | Vs list |
|---|---|---|---|---|---|
The lab's own API · cached $0.5 | $2 | $8 | $2 / $8List price | $0.5 | List price |
USD per 1M tokens; batch $1 in, $4 out on the lab's API. Regions are separate routes.
Through a gateway
Your own numbers100M input and 20M output tokens a month: $360.00 direct.
Helicone$360.00+0%
Kong AI Gateway$360.00+0%
LiteLLM$360.00+0%
Vercel AI Gateway$360.00+0%
Cloudflare AI Gateway$378.00+5%
Requesty$378.00+5%
Eden AI$379.80+5.5%
OpenRouter$379.80+5.5%
Neon AI GatewayNot offeredNot offered
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
List price since Apr 23, 2025, from Internet Archive snapshots of the OpenRouter catalog, then daily reads.
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.