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Upstage: Solar Mini 4 (Reasoning)

upstage/solar-mini4-reasoning

Upstage: Solar Mini 4 (Reasoning) is a 524,288-token model served on Composite at $0.0160 per million tokens in and $0.200 per million tokens out.

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Specifications

Specifications and pricing as served by Composite
Model IDupstage/solar-mini4-reasoning
Providercv11
Context window524,288 tokens
Acceptstext
Returnstext
Input price$0.0160 per million tokens
Output price$0.200 per million tokens
Prompt cachingSupported — cached input is 60% off the list rate on pay-as-you-go credits
ThinkingOptional - see "Upstage: Solar Mini 4 (Reasoning) (Reasoning)" in the catalog to turn it on by default
ModeratedNo
Cost on a monthly plan1 request of the daily allowance per call
Plans that may spend on itEvery plan, plus pay-as-you-go credits
Routing endpoints1

Measured on Composite

This model has not carried enough traffic on Composite yet to publish a success rate, a latency figure or a traffic rank. The numbers appear here once it has.

Pricing

$0.0160 per million tokens input · $0.200 per million tokens output

Input and output are charged at the provider’s list price.

On a monthly plan, one call costs 1 request of that day's allowance.

Provider

cv11

Roleplay fit

This model is available on Composite alongside dozens of others from other labs, so it is easy to compare against similar options.

Context behavior

With a 524,288-token context window, it can hold a long-running roleplay or a full lorebook in memory without losing earlier plot details, so it suits multi-session campaigns and character cards with heavy backstory.

Cost for regular use

It is priced low enough for high-volume daily roleplay without the per-message cost adding up quickly.

From the provider

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. It is built for agentic use cases where response...

Supplied by cv11, not written by Composite.