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Model details

Solar Mini 4

Solar Mini 4 belongs to Upstage's Solar family of compact language models, positioned as a budget-friendly option in the lineup. Third-party comparison aggregators attribute the model to Upstage and highlight its emphasis on efficient inference and accessible pricing, framing it as a value-oriented counterpart to larger general-purpose LLMs. The variant is intended for everyday text tasks where cost and responsiveness matter more than top-tier reasoning depth, including short-form generation, summarization, and lightweight conversational assistance.

In practical comparisons, Solar Mini 4 consistently ranks as the strongest value-oriented option against heavier reasoning-focused models, with aggregator scoring emphasizing its attractive quality-to-price ratio rather than leadership on raw reasoning benchmarks. That positioning suggests a fit for developers who need reliable general text generation and tool integration without paying flagship-model rates, while acknowledging that workloads demanding deep multi-step reasoning may benefit from larger alternatives. The model's lightweight stance within the Solar family makes it a pragmatic choice when balancing throughput, cost, and acceptable reasoning quality.

OpenRouterupstage/solar-mini4solar

Quick Info

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Provider
OpenRouter
Model key
upstage/solar-mini4
Release date
Sep 23, 2026
Last updated
Sep 23, 2026
Input modalities
Output modalities
Capabilities

Cost

Input token cost
$0.05
Output token cost
$0.20

Limits

Output tokens
131,072 tokens
Context window
524,288 tokens

Transparent token rates

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Rates are shown per one million tokens. Combined means one million input plus one million output tokens.

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