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  1. Models
  2. Text
  3. Upstage

Solar Mini 4 Thinking

Solar Mini 4 with reasoning enabled for agentic tasks and harder analysis across a 524K-token context window.

  • Reasoning
  • Tool Calling
  • Structured Output

Added Sep 23, 2026

Pricing

Auto routing · per 1M tokens
Input
$0.05
Output
$0.20
Cache read
$0.005
Compare provider prices

Specifications

Context window
524.3K
Max output
131.1K
Parameters
35B / 3B
Total / active
Avg output (7d)
449 tokens
Longer than 45% of models

Benchmarks

Sourced from Artificial Analysis.

Agentic work

GDPval-AA (unversioned / legacy)

Legacy fallback · Economically valuable tasks

29.6%

Document reasoning

AA-LCR (unversioned / legacy)

Legacy fallback · Long context reasoning evaluation

83.3%

Better than 96% of models compared

Reasoning

HLE

Humanity's Last Exam

25.8%

Better than 72% of models compared

CritPt

Research-level physics reasoning

1.4%

Coding

SciCode

Python programming for scientific computing

47.6%

Better than 42% of models compared

Knowledge

AA-Omniscience Accuracy

Proportion of correctly answered questions

18.2%

AA-Omniscience Hallucination Rate

Rate of incorrect answers among non-correct responses

36.5%

Last updated Oct 28, 2026, 12:01 PM

Artificial Analysis

Providers

Auto routing is available for this model. Explicit provider selection is not available.

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Reliability

Related text models

Compare Solar Mini 4 Thinking with similar models from the same provider or model family.

Solar Mini 4

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Upstage's compact 35B-parameter mixture-of-experts model with 3B active parameters and a 524K context window. Built for fast, cost-efficient agentic tasks, with strong Korean and English support.

Solar Pro 4

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Upstage's Solar Pro 4 is a long-context language model for agentic workflows, office productivity, document-intensive work, and coding. This variant keeps reasoning disabled for faster direct responses.

Solar Pro 4 Thinking

upstage/solar-pro4:thinking

Upstage's Solar Pro 4 with reasoning enabled for harder agentic workflows, document-intensive work, coding, planning, and analysis across a 524K-token context window.

Solar Pro 3

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Upstage's Solar Pro 3 is a Mixture-of-Experts (MoE) language model with 102B total parameters and 12B active parameters per forward pass, optimized for Korean with strong English and Japanese support.

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A GLM-family collaborative generation model tuned for immersive roleplay and storytelling, with stronger narrative structure, tension, conflict, and nuanced mature themes.

Nex N2.5 Mini

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