Last refreshed 2026-06-04. Next refresh: weekly.
Why use o3 Mini on OpenAI API?
OpenAI API offers o3 Mini with competitive pricing. OpenAI is a leading AI research and deployment company dedicated to developing safe and beneficial artificial general intelligence (AGI) for humanity.
Compare o3 Mini across 4 providers to find the best fit for your use caseInput / 1M
-
Output / 1M
-
Cache
Not sourced
Batch
in $0.15 / out $0.60
Setup recipe
Python + curlInstall
pip install openaiAuth
export OPENAI_API_KEY=...Call
import os
from openai import OpenAI
client = OpenAI() # reads OPENAI_API_KEY from env
response = client.chat.completions.create(Model ID
o3-miniRequest example
import os
from openai import OpenAI
client = OpenAI() # reads OPENAI_API_KEY from env
response = client.chat.completions.create(
model="o3-mini",
messages=[{"role": "user", "content": "Hello"}]
)
print(response.choices[0].message.content)Gotchas
- Use the model slug directly, e.g. "gpt-4o" or "gpt-4.1-mini".
- The examples expect OPENAI_API_KEY; rename it only if your application config maps the new variable.
Compare o3 Mini Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| OpenRouter | $1.10 | $4.40 |
| Azure OpenAI | — | — |
| OpenAI API | — | — |
| Vercel AI Gateway | $1.10 | $4.40 |
Capabilities
ReasoningFunction CallingTool UseStructured OutputsCode ExecutionPrompt Caching
About o3 Mini
OpenAI o3-mini - cost-optimized reasoning model. Compact variant of reasoning model family.
FAQ
What is the context window for o3 Mini on OpenAI API?
o3 Mini supports a 200k token context window on OpenAI API.
How does OpenAI API compare to other o3 Mini providers?
o3 Mini is available from 4 providers. The cheapest input pricing is $1.1/1M tokens from OpenRouter.
Who created o3 Mini?
o3 Mini was created by OpenAI as part of the o3 model family.
Is o3 Mini open source?
o3 Mini is not open source; the seed data lists it as proprietary.
Get Started
Model Specs
Released2025-01-31
Context200k
ArchitectureDecoder Only
Knowledge cutoff2025-04