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solar-mini4

Solar-mini4 is a highly optimized Mixture-of-Experts (MoE) model designed for developers who need to balance high-performance reasoning with low-latency execution. While it carries a 35B parameter footprint, its architecture utilizes only 3B active parameters per token, making it significantly faster and more cost-effective than dense models of similar scale. The standout feature is the massive 524K context window, which allows for deep document analysis, large-scale codebase ingestion, and long-form conversation memory without the typical performance degradation seen in smaller models. For engineers building autonomous agents, Solar-mini4 offers the throughput necessary for rapid tool-calling and iterative reasoning loops. It serves as an ideal middle ground for those who find 7B models too limited for complex instruction following, but find 70B+ models too slow or expensive for real-time production environments.

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01 / MODEL CARD

Model card

Solar-mini4 is a highly optimized Mixture-of-Experts (MoE) model designed for developers who need to balance high-performance reasoning with low-latency execution. While it carries a 35B parameter footprint, its architecture utilizes only 3B active parameters per token, making it significantly faster and more cost-effective than dense models of similar scale. The standout feature is the massive 524K context window, which allows for deep document analysis, large-scale codebase ingestion, and long-form conversation memory without the typical performance degradation seen in smaller models. For engineers building autonomous agents, Solar-mini4 offers the throughput necessary for rapid tool-calling and iterative reasoning loops. It serves as an ideal middle ground for those who find 7B models too limited for complex instruction following, but find 70B+ models too slow or expensive for real-time production environments.

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Providerupstage
LicenseAPI
02 / FILES & VERSIONS

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Source repositoryhttps://openrouter.ai/upstage/solar-mini4
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04 / WORKFLOW

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05 / DISCUSSIONS

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