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Models/Solar Mini 4
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upstage/solar-mini4

Solar Mini 4 is Upstage’s AI model, released Sep 23, 2026. It costs $0.10/M input and $0.40/M output tokens, and handles a 524K-token context window.

Solar Mini 4 is Upstage's compact, cost-efficient language model, a 35B-parameter mixture-of-experts with 3B active parameters and a 524K context window.

Context
524K
Input
$0.10 / 1M
Output
$0.40 / 1M
Released
Sep 23, 2026
Modalities
texttext

Benchmarks

Scores on standardized evaluations. Higher is better — and rank shows where Solar Mini 4 lands among all models tracked on Model Beat.

No standardized benchmark scores from Epoch AI yet — common for very recent, image, or niche models. Scores appear here once published.

Changelog

1
  • Solar Mini 4 (Upstage) added to the tracker: $0.05/$0.2 per 1M, 524K context.tracked · Sep 23, 2026

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Frequently asked questions

What is Solar Mini 4?

Solar Mini 4 is Upstage's compact, cost-efficient language model, a 35B-parameter mixture-of-experts with 3B active parameters and a 524K context window.

Who created Solar Mini 4?

Solar Mini 4 is an AI model developed by Upstage, released Sep 23, 2026.

How much does Solar Mini 4 cost?

Solar Mini 4's list price from Upstage is $0.10 per million input tokens and $0.40 per million output tokens.

What is Solar Mini 4's context window?

Solar Mini 4 supports a context window of up to 524K tokens.

Benchmark data from Epoch AI (CC BY) and Artificial Analysis; pricing, specs & descriptions from OpenRouter. Data updated Sep 24, 2026.