LLM Perks

GPT 5 Mini

OpenAI · All GPT models
Free right now Small New
VisionLong context

GPT 5 Mini is a language model from OpenAI. It is currently free at 1 provider with up to 400K tokens of context. The model understands images.

Developer
OpenAI
Context
400K tokens
Type
Text
License
Proprietary
Free since
October 11, 2026

Where to use GPT 5 Mini for free

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

ProviderContextLimitCard
UnoRouter
gpt-5-mini:free
400K 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-5-mini:free",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

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

Benchmarks

Intelligence Index
20.6
GPQA Diamond
80.3%
Humanity's Last Exam
15.9%
Terminal-Bench Hard
28.8%
τ²-Bench
71.1%
Long context (LCR)
72.3%

Source: Artificial Analysis · GPT-5 mini (Medium)

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FAQ

Is GPT 5 Mini free?

Yes. As of October 11, 2026, GPT 5 Mini is free at UnoRouter. Each provider has its own limits — see the table above.

What is the context window of GPT 5 Mini?

The largest context among free routes is 400,000 tokens. Some providers cap it lower.

How do I call GPT 5 Mini via API?

Use any OpenAI-compatible client with base URL https://api.unorouter.com/v1, model ID gpt-5-mini:free, and a UnoRouter key.

How good is GPT 5 Mini?

Artificial Analysis Intelligence Index: 20.6, GPQA Diamond: 80%. For comparison, the strongest free model in the catalog right now is GLM 5.3.

Is GPT 5 Mini open-weight?

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