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Upstage Proprietary Released Aug 6, 2026 Updated

Solar Pro 4

ToolsGuide Scores, rankings, test results and price.

Model summary

  • Text #127 / 416

    335 / 1,000

    ToolsGuide Score· votes 270, tests 428

  • Coding #107 / 147

    259 / 1,000

    ToolsGuide Score· votes 263, tests 257

  • Agents #53 / 53

    326 / 1,000

    ToolsGuide Score· votes 337, tests 321

  • Price per 1M tokens

    In $0.30· Out $1.20

    $0.30

    Input · median text model $0.43

Summary

Solar Pro 4 is Upstage's model, released Aug 6, 2026. It's ranked in 3 categories and does best at text: #127 of 416, with a ToolsGuide Score of 335 against a median of 235.

It also ranks #107 of 147 for coding (259), #53 of 53 for agents (326).

It costs $0.30 per million input tokens and $1.20 per million output tokens, below the median text model ($0.43).

It has published results on 9 tests.

Specifications

Creator
Upstage
Licence
Proprietary
Released
Aug 6, 2026
Context window
524K tokens
Input price
$0.30 / 1M
Output price
$1.20 / 1M
Tests reported
9
Settings ranked
solar-pro4, Solar Pro 4

Model comparison

Against the ten best text models.

Text score

ToolsGuide Score out of 1,000 · Higher is better

Coding score

ToolsGuide Score out of 1,000 · Higher is better

Input price

USD per 1M input tokens · Lower is better

Leaderboards

Where Solar Pro 4 sits among the top 20 in each category.

Text

#127 of 416 · ToolsGuide Score out of 1,000, where 1,000 is a flawless model

Full text leaderboard →

Coding

#107 of 147 · ToolsGuide Score out of 1,000, where 1,000 is a flawless model

Full coding leaderboard →

Agents

#53 of 53 · ToolsGuide Score out of 1,000, where 1,000 is a flawless model

Full agents leaderboard →

By task

Scored from votes on each kind of prompt alone, on the same 1,000-point scale.

Score against price

Text · the 10 priced models ranked closest · up and to the left is better value

Against its nearest rivals

Text prompts by kind · ToolsGuide Score from votes · hover for values

Text

solar-pro4 · hover a bar for its rank

Coding

Solar Pro 4 · hover a bar for its rank

Test results

Every test Solar Pro 4 has a published result on, out of 100%, with its rank among the models that took it.

  • GPQA

    #35 / 256

    Graduate-level science questions written to be hard to look up.

    89.0%

    Self-reported

  • MMLU-Pro

    #13 / 142

    Broad knowledge and reasoning across 14 subjects, ten answer choices each.

    86.3%

    Self-reported

  • SWE-Bench Verified

    #68 / 120

    Fixing real bugs in real GitHub projects, checked by the projects' own tests.

    70.6%

    Self-reported

  • LiveCodeBench

    #5 / 76

    LiveCodeBench is a holistic and contamination-free evaluation benchmark for large language models for code. It continuously collects new problems from programming contests (LeetCode, AtCoder, CodeForces) and evaluates four different scenarios: code generation, self-repair, code execution, and test output prediction. Problems are annotated with release dates to enable evaluation on unseen problems released after a model's training cutoff.

    87.8%

    Self-reported

  • BrowseComp

    #54 / 68

    Finding hard-to-locate facts by browsing the web.

    49.2%

    Self-reported · In the agents score

  • Terminal-Bench 2.1

    #37 / 46

    Terminal-Bench 2.1 is an updated release of the Terminal-Bench benchmark that tests AI agents' ability to operate a computer via the terminal. It evaluates how well models handle real-world, end-to-end tasks autonomously, including compiling code, training models, setting up servers, system administration, data science workflows, and security tasks.

    57.0%

    Self-reported

  • AIME 2026

    #6 / 26

    All 30 problems from the 2026 American Invitational Mathematics Examination (AIME I and AIME II), testing olympiad-level mathematical reasoning with integer answers from 000-999. Used as an AI benchmark to evaluate large language models' ability to solve complex mathematical problems requiring multi-step logical deductions and structured symbolic reasoning.

    95.3%

    Self-reported

  • AA-LCR

    #5 / 25

    Agent Arena Long Context Reasoning benchmark

    71.0%

    Self-reported

  • Tau3 Banking

    #6 / 13

    τ³-Bench banking domain evaluates agentic models on multi-turn, tool-using customer-support scenarios in a simulated retail banking environment.

    23.0%

    Self-reported