LLM Perks

Solar Mini 4

Upstage · All Solar models
Free right now Small New
Long context

Solar Mini 4 is a language model from Upstage. It is currently free at 1 provider with up to 524K tokens of context.

Developer
Upstage
Context
524K tokens
Type
Text
License
Proprietary
Free since
October 5, 2026

Where to use Solar Mini 4 for free

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

ProviderContextLimitCard
Nous Portal
upstage/solar-mini4:free
524K The $0 Portal plan includes free models with standard rate limits. Model availability can change. No Open

Quick start

curl https://inference-api.nousresearch.com/v1/chat/completions \
  -H "Authorization: Bearer $NOUS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "upstage/solar-mini4:free",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

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

Benchmarks

Intelligence Index
24.1
Humanity's Last Exam
25.8%
Long context (LCR)
83.3%

Source: Artificial Analysis · Solar Mini 4

Similar free models

FAQ

Is Solar Mini 4 free?

Yes. As of October 5, 2026, Solar Mini 4 is free at Nous Portal. Each provider has its own limits — see the table above.

What is the context window of Solar Mini 4?

The largest context among free routes is 524,288 tokens. Some providers cap it lower.

How do I call Solar Mini 4 via API?

Use any OpenAI-compatible client with base URL https://inference-api.nousresearch.com/v1, model ID upstage/solar-mini4:free, and a Nous Portal key.

How good is Solar Mini 4?

Artificial Analysis Intelligence Index: 24.1. For comparison, the strongest free model in the catalog right now is GLM 5.3.

Is Solar Mini 4 open-weight?

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