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  1. Models
  2. Text
  3. Upstage

Solar Pro 4 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.

  • Reasoning
  • Tool Calling
  • Structured Output

Added Aug 11, 2026

Pricing

Auto routing · per 1M tokens
Input
$0.03
Output
$0.12
Cache read
$0.006
Compare provider prices

Specifications

Context window
524.3K
Max output
131.1K
Avg output (7d)
2.2K tokens
Longer than 93% of models

Benchmarks

Sourced from Artificial Analysis.

Intelligence Index

28.2

Intelligence Index: 28.2
Better than 45% of models compared

Coding Index

52.7

Coding Index: 52.7
Better than 64% of models compared

Agentic work

AutomationBench-AA

Workflow automation with guardrail penalties

13.6%

Better than 33% of models compared

AutomationBench-AA Tasks Completed

Fully completed workflows without guardrail violations

2.4%

Better than 36% of models compared

AA-Briefcase v1.1

Agentic knowledge work (Elo)

1093 Elo

Better than 52% of models compared

GDPval-AA v2.1

Economically valuable tasks (Elo)

1106 Elo

Better than 50% of models compared

Document reasoning

GDP.pdf

Professional PDF reasoning: all-pass rate

7.0%

Better than 32% of models compared

AA-LCR v1.1

Long context reasoning with updated grading

70.7%

Better than 62% of models compared

Reasoning

HLE

Humanity's Last Exam

29.8%

Better than 76% of models compared

Coding

Terminal-Bench v4.0

Practical coding and terminal tasks

0.0%

Better than 15% of models compared

SciCode

Python programming for scientific computing

48.0%

Better than 44% of models compared

Legacy benchmarks

GPQA Diamond (legacy)

Graduate-level scientific reasoning

89.1%

Better than 86% of models compared

AA-LCR (unversioned / legacy)

Long context reasoning evaluation

70.7%

Better than 62% of models compared

Last updated Oct 31, 2026

Artificial Analysis

Providers

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Reliability

Related text models

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

Solar Pro 4

upstage/solar-pro4

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 3

upstage/solar-pro-3

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.

Solar Mini 4

upstage/solar-mini4

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 Mini 4 Thinking

upstage/solar-mini4:thinking

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

GPT 6.1 Terra Pro

openai/gpt-6.1-terra-pro

GPT-6.1 Terra Pro uses the same underlying model as GPT-6.1 Terra with Pro reasoning mode enabled for higher-quality responses on complex tasks.

Kimi K3.1 Pro

moonshotai/kimi-k3.1-pro

Kimi K3.1 Pro is a multimodal reasoning model for coding, 3D creation, document analysis and multi-step tool use. It supports a 1M-token context window and text, image and video inputs. Reasoning is always enabled, with low, high and max effort levels.