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Data checked September 25, 2026
Data checked September 25, 2026
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Data checked September 25, 2026 · Every number links to its sourceRSS · Source on GitHub
Leaderboard/Upstage
Upstage

Upstage · Solar

Solar Mini 4

Closed weightsGenerally availableNewproprietary

Upstage's small MoE (35B total, 3B active) from Korea, priced at $0.10 / $0.40 and strong at long-context reasoning for its size.

AA Intelligence
24#68 of 151
Input / output per 1M
$0.10/ $0.40
Output speed
208tok/s
Context window
524K tokens

Composite indexes

  • Artificial Analysis Intelligence Index#68 of 151
    24independentAA Intelligence Index v4.3Artificial Analysis: Upstage releases Solar Mini 4 ↗

    Leader: Claude Opus 5.5 at 58

Coding

  • Terminal-Bench 4.0#56 of 96
    1%independentTerminal-Bench 4.0 (AA harness)Artificial Analysis: Upstage releases Solar Mini 4 ↗

    Leader: Claude Sonnet 5.5 at 70.6%

  • SciCode#53 of 100
    48%independentArtificial Analysis: Upstage releases Solar Mini 4 ↗

    Leader: Claude Opus 5.5 at 66.9%

Agents and tool use

  • GDPval-AA#52 of 109
    1072independentGDPval-AAArtificial Analysis: Upstage releases Solar Mini 4 ↗

    Leader: Muse Wonder Full at 1857

Vision and long context

  • AA Long Context Reasoning#18 of 144
    83%independentArtificial Analysis: Upstage releases Solar Mini 4 ↗

    Leader: Kimi K3 at 88.7%

Other published results

ResultScoreReported bySource
AutomationBench-AA (partial score)22%independentArtificial Analysis: Upstage releases Solar Mini 4 ↗
AA-Omniscience Index-11 index (-100 to 100)independentArtificial Analysis: Upstage releases Solar Mini 4 ↗

Specs

Released
September 22, 2026
Parameters
35B total, 3B active
Size class
10 to 40B
Input
text
Output
text
Context
524K tokens
Max output
Not published
Cached input
$0.01 / 1M
Blended 70/30
$0.19 / 1M
  • Price: Upstage console: models ↗ List price; a 50% launch promotion runs through Oct 22, 2026.
  • Speed: Artificial Analysis: Solar Mini 4 launch article (output speed at launch) ↗

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Compare with

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