LLM Perks

GPT 4o Mini

OpenAI · All GPT models
Free right now Mid-size New
VisionTool use

GPT 4o Mini is a language model from OpenAI. It is currently free at 1 provider with up to 128K tokens of context. The model understands images, supports tool calling.

Developer
OpenAI
Context
128K tokens
Type
Text
License
Proprietary
Free since
October 11, 2026

Where to use GPT 4o Mini for free

Each row is a separate free endpoint with its own limits.

ProviderContextLimitCard
UnoRouter
gpt-4o-mini:free
128K No-card free models use shared capacity and per-model limits; availability can change. No Open

Quick start

curl https://api.unorouter.com/v1/chat/completions \
  -H "Authorization: Bearer $UNOROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-4o-mini:free",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Example for UnoRouter. Any OpenAI-compatible client works: Cursor, Cline, OpenCode, Open WebUI.

Benchmarks

Intelligence Index
6.7
GPQA Diamond
42.6%
Humanity's Last Exam
4.2%

Source: Artificial Analysis · GPT-4o mini

Similar free models

FAQ

Is GPT 4o Mini free?

Yes. As of October 11, 2026, GPT 4o Mini is free at UnoRouter. Each provider has its own limits — see the table above.

What is the context window of GPT 4o Mini?

The largest context among free routes is 128,000 tokens. Some providers cap it lower.

How do I call GPT 4o Mini via API?

Use any OpenAI-compatible client with base URL https://api.unorouter.com/v1, model ID gpt-4o-mini:free, and a UnoRouter key.

How good is GPT 4o Mini?

Artificial Analysis Intelligence Index: 6.7, GPQA Diamond: 43%. For comparison, the strongest free model in the catalog right now is GLM 5.3.

Is GPT 4o Mini open-weight?

No, it is proprietary: access is only through provider APIs.