o3 Mini API

openai/o3-mini
OpenAI o3-mini excels in reasoning tasks with advanced features like deliberative alignment and extensive context support.
Context
200K tokens
Input
$1.43 / 1M tokens
Output
$5.72 / 1M tokens
Released
Aug 7, 2025

How to use o3 Mini API

Install any OpenAI-compatible SDK, point it at api.aimlapi.com/v1, and set the model to openai/o3-mini.
import requests

r = requests.post(
    "https://api.aimlapi.com/v1/chat/completions",
    headers={"Authorization": "Bearer " + AIMLAPI_KEY},
    json={
      "model": "openai/o3-mini",
      "messages": [
        {
          "role": "user",
          "content": "Hello!"
        }
      ]
    },
)
print(r.json())
const r = await fetch("https://api.aimlapi.com/v1/chat/completions", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.AIMLAPI_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "model": "openai/o3-mini",
    "messages": [
      {
        "role": "user",
        "content": "Hello!"
      }
    ]
  }),
});
console.log(await r.json());
curl -X POST https://api.aimlapi.com/v1/chat/completions \
  -H "Authorization: Bearer $AIMLAPI_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"openai/o3-mini","messages":[{"role":"user","content":"Hello!"}]}'

OpenAI-compatible — swap the base URL and it works with your existing SDK.

o3 Mini API Pricing

TypePrice
Input
$1.43 / 1M tokens
Output
$5.72 / 1M tokens
Cached input
$0.715 / 1M tokens

o3 Mini Benchmarks

BenchmarkScoreWhat it measuresSourceRetrieved
SWE-bench Verified
49.3%
Resolving verified real GitHub issuesSourceJuly 12, 2026
GPQA Diamond
79.7%
Google-proof graduate science questions (hardest subset)SourceJuly 12, 2026
Intelligence
12.5
Composite score across standardised reasoning, knowledge and problem-solving evaluations, measured independently by Artificial AnalysisSourceSeptember 12, 2026

Frequently asked questions

o3 Mini has a 200,000 tokens context window.

o3 Mini takes text as input and returns text.

Use openai/o3-mini as the model id. Requests go to https://api.aimlapi.com/v1/chat/completions.

o3 Mini became available on August 7, 2025.

o3 Mini is priced at input $1.43 / 1M tokens, output $5.72 / 1M tokens, cached input $0.715 / 1M tokens.

Yes, o3 Mini can stream responses as they are generated.

o3 Mini was built by OpenAI.

No. o3 Mini only supports text input and text output.

Yes, o3 Mini supports tool calling and function calling as part of its capabilities.

Yes, o3 Mini supports structured output generation.

Start building with o3 Mini

Get API Key
1000+ models, one API.