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Model

Solar Pro 4

Upstage's flagship model, specialized for agentic use

5 providers · 5 listingsreleased knowledge cutoff 2026-02closed weights
$0.03
lowest input /M · NanoGPT
$0.12
lowest output /M · NanoGPT
524K
context window
131K
max output

Compare providers (sorted by listed input price)

5 providers list Solar Pro 4. The cheapest full-context option is NanoGPT at $0.03/$0.12 per M — 90% below Upstage's own price. Listed prices span 10.0× for identical weights.

5 listings
Cache read /MCache write /MCapabilitiesStatus
NanoGPT
upstage/solar-pro4
$0.03$0.12$0.0060524Kno reasoningtoolsstructuredno visionAug 6, 2026
LLMTR
upstage/solar-pro4
$0.03$0.12524Kreasoningtoolsstructuredno visionAug 6, 2026
OpenRouter
upstage/solar-pro4
$0.09$0.36$0.018524Kreasoningtoolsstructuredno visionAug 10, 2026
Kilo Gateway
upstage/solar-pro4
$0.3$1.20$0.06524Kreasoningtoolsstructuredno visionAug 10, 2026
Upstage
solar-pro4
$0.3$1.20$0.06524Kreasoningtoolsstructuredno visionAug 6, 2026

Best price history

Daily lowest published price across live providers. A lower line is better for the buyer.

Best input /M
$0.03unchanged
Best output /M
$0.12unchanged
Provider coverage
5
5 at the start · 24 snapshots

Published best prices are unchanged.

24 daily snapshots collected from Aug 21, 2026 through Sep 14, 2026. A price chart will appear after the first real move.

Price badge

Current price badge for Solar Pro 4
![Solar Pro 4 price](https://www.vaanalytics.in/badge/upstage/solar-pro4.svg)
https://www.vaanalytics.in/badge/upstage/solar-pro4.svg

Live SVG, regenerated on every hourly sync — paste it into a README to always show the current cheapest listed price. Updates when prices change; no build step needed on your side.

Recent changes

Changelog →
  • repricedvia openrouter · Sep 11, 2026
    • input: $0.03 → $0.09
    • output: $0.12 → $0.36
    • cache_read: $0.0060 → $0.018

Prices are per million tokens (USD). “—” means the provider does not publicly list a price for this model. Data from models.dev; verify with the provider before purchasing.