Ways to buy 1
| Way to buy | Input | Output | In / out per 1M | Cached | Vs list |
|---|---|---|---|---|---|
 OpenAI APIThe lab's own API · cached $0.55 | $1.1 | $4.4 | $1.1 / $4.4List price | $0.55 | List price |
USD per 1M tokens; batch $0.55 in, $2.2 out on the lab's API. Regions are separate routes.
Through a gateway
Your own numbers100M input and 20M output tokens a month: $198.00 direct.
Helicone$198.00+0%
Kong AI Gateway$198.00+0%
LiteLLM$198.00+0%
Vercel AI Gateway$198.00+0%
Cloudflare AI Gateway$207.90+5%
Requesty$207.90+5%
Eden AI$208.89+5.5%
OpenRouter$208.89+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 3.8 FlashGoogle · 1MCheapest: $0.75 on Google Gemini API (flex) | $0.75 | $3.75 | $0.75 / $3.75 | $1.5 | 1M | $0.75 on Google Gemini API (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 Mini
OpenAI o3-mini is a cost-efficient language model optimized for STEM reasoning tasks, particularly excelling in science, mathematics, and coding.
Takes text, files in and returns text. First listed Feb 13, 2025. Up to 100K output tokens. Blended price $1.93 per 1M tokens at 3 input to 1 output. Model id o3-mini.
Price history
List price since Feb 13, 2025, from Internet Archive snapshots of the OpenRouter catalog, then daily reads.
| Seen | Model | Old price | New price | Change |
|---|---|---|---|---|
| Apr 10, 2025 | o3 MiniCached input Free to $0.55 | Cached input Free | Cached input $0.55 |
Questions
How much does o3 Mini cost?
$1.1 per million input tokens and $4.4 per million output tokens, with cached input at $0.55, or $0.55 and $2.2 through the Batch API.
What is the context window of o3 Mini?
200K tokens, with up to 100K tokens of output.
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.