GPT-4o Mini

by OpenAI

GPT-4o Mini brings GPT-4o's multimodal strengths to a smaller, cheaper model tuned for throughput and cost efficiency. It supports text and vision understanding, JSON schema structured output, and function calling for tool composition. The 128,000 token context window handles long conversations and document analysis, so the model stays useful well beyond simple tasks. It is well suited to high-volume inference, real-time systems, and workloads where fast, low-cost iteration matters more than peak intelligence.

Key info

Input
Output
Features
Context window
128K
Max output
16K
Input price
$0.15 /1M
Output price
$0.60 /1M
  • US residency available
  • Zero data retention via Enterprise
  • No training by default
  • GDPR DPA available

Available routes

GPT-4o Mini runs on 1 route through the Opper gateway. Compare residency, ZDR, and training posture at a glance β€” full data-handling detail per route below.

ProviderRegionZero data retentionTrainingInputOutput
OpenAIUSEnterpriseNo$0.15$0.60

Training posture across routes: No training on prompts by default.

Data handling per route

Each route hosting GPT-4o Mini has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.

OpenAI β€” United StatesπŸ‡ΊπŸ‡Έ

Zero data retention is available via Opper Enterprise contract. No training on customer data. US; SCCs; DPA available.

Zero data retention
Available via Opper Enterprise contract.
Training
No training on customer data.
Logging
Abuse monitoring (30-day retention)
Third-party access
None disclosed
GDPR DPA
DPA available
Transfer mechanism
SCCs

Benchmarks

Independent benchmark scores β€” composite indices for reasoning, coding, and math, plus individual eval scores where available.

Global rank#398 of 531 LLMs
TierEfficient
Output speed81 tok/s
First token0.59s
Intelligence Index6.9
Math Index14.7
Reasoning & knowledge
MMLU-Pro
65%
GPQA Diamond
43%
Humanity's Last Exam
4%
Coding
LiveCodeBench
23%
SciCode
23%
Math & instruction following
AIME 2025
15%
IFBench
31%

Get started

Call GPT-4o Mini through the Opper gateway with one API key. Let your coding agent set it up, or call it directly β€” Opper is drop-in compatible with the OpenAI, Anthropic, and Google AI SDKs.

Set it up with your agent

Copy this and paste it into your coding agent β€” Claude Code, Cursor, Codex, and more β€” and it'll wire up Opper for you.

Or call it directly

import OpenAI from "openai";
const client = new OpenAI({
apiKey: process.env.OPPER_API_KEY,
baseURL: "https://api.opper.ai/v3/compat",
});
const completion = await client.chat.completions.create({
model: "openai/gpt-4o-mini",
messages: [{ role: "user", content: "Hello" }],
});
console.log(completion.choices[0].message.content);

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Side-by-side on privacy, EU hosting, pricing, and benchmarks.

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GPT-4o Mini by OpenAI β€” pricing, benchmarks | Opper AI