Ways to buy 1
| Way to buy | Input | Output | In / out per 1M | Cached | Vs list |
|---|---|---|---|---|---|
 OpenAI APIThe 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%
No published token fee: Martian Gateway, Portkey, TrueFoundry AI Gateway.
Related models
| In / out per 1M | Cheapest route | ||||||
|---|---|---|---|---|---|---|---|
| GPT-6 Luna OpenAI · 1.05MCheapest: $0.1 on OpenAI (flex) | $0.1 | $0.5 | $0.1 / $0.5 | $0.2 | 1.05M | $0.1 on OpenAI (flex) | · |
| GPT-6 Luna Pro OpenAI · 1.05MCheapest: $0.1 on OpenAI (flex) | $0.1 | $0.5 | $0.1 / $0.5 | $0.2 | 1.05M | $0.1 on OpenAI (flex) | · |
| GPT-6 Sol OpenAI · 1.05MCheapest: $2 on OpenAI (flex) | $2 | $10 | $2 / $10 | $4 | 1.05M | $2 on OpenAI (flex) | · |
| GPT-6 Sol Pro OpenAI · 1.05MCheapest: $2 on OpenAI (flex) | $2 | $10 | $2 / $10 | $4 | 1.05M | $2 on OpenAI (flex) | · |
 Muse Spark 1.3Meta · 1M | $1.25 | $4.25 | $1.25 / $4.25 | $2 | 1M | Lab list price | · |
 Gemini 3.1 Pro PreviewGoogle · 1MCheapest: $2.25 on Google Vertex AI (global-flex) | $2 | $12 | $2 / $12 | $4.5 | 1M | $2.25 on Google Vertex AI (global-flex) | · |
| Muse Spark 1.1 Meta · 1M | $1.25 | $4.25 | $1.25 / $4.25 | $2 | 1M | Lab list price | · |
 Qwen3.8 Max (0902)Qwen (Alibaba) · 1M | $2 | $6 | $2 / $6 | $3 | 1M | Lab list price | · |
About o3
o3 is a well-rounded and powerful model across domains.
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. Overall score 3 on leadersboard.fru.dev (rank 44). Model id o3.
Price history
List price since Apr 23, 2025, from Internet Archive snapshots of the OpenRouter catalog, then daily reads.
| Seen | Model | Old price | New price | Change |
|---|---|---|---|---|
| Jun 13, 2025 | o3Input $10 to $2, Output $40 to $8, Cached input $2.5 to $0.5 | Input $10Output $40Cached input $2.5 | Input $2Output $8Cached input $0.5 | -80% |
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.
Sources: OpenRouter's public model catalog and each provider's own pricing page, read every morning at 05:00 UTC; gateway fees re-read every Monday. List prices: your contract may differ. Logos via logo.dev; trademarks belong to their owners.