ModelPriceWatch.com
Last scan 2026-09-25 Models tracked 271 Providers 35 Cheapest paid Granite 4.0 H Micro $0.017/Mtok in Every price links to its source

Solar Pro 4

by Upstage

Current new · 45d Intro price mid tier cheap tier
Email me when Solar Pro 4 gets cheaper

Today's price · per 1M tokens

Input

$0.090

per 1M tokens

Output

$0.360

per 1M tokens

Blended

$0.158

blended $/1M — 3:1 weighted input:output

Cached input

$0.018

20% of input — prompt caching

How this price is scoped: Promotional pricing, per 1M tokens, exclusive of 10% VAT. Upstage's standard list price for Solar Pro 4 is $0.30 input / $0.06 cached input / $1.20 output. The launch promotion prices it at 70% off — $0.09 / $0.018 / $0.36 — through Oct 9 2026, and Upstage's pricing page shows the standard price struck through beside the discounted one. From Oct 10 2026 (UTC) the standard list price applies; we track that date and will publish the reversion on the day. Before Sep 11 2026 the promotion was 90% off ($0.03 / $0.006 / $0.12).

Source: official Upstage pricing · read MODELPRICEWATCH.COM · 2026-09-25

Price receipt

We read Upstage's own pricing page on and found Solar Pro 4 listed on its own card with a dated rate schedule that states this price for that day — that read is where the number above comes from, recorded as a price increase. We keep the page text we read; its content hash is badec83539.

Overview

Upstage's agentic Solar flagship, successor to Solar Pro 3, with a 512K context window and up to 128K output tokens. Promotional pricing is $0.09/$0.36 per 1M tokens (70% off) through Oct 9 2026; it reverts to Upstage's standard list price of $0.30/$1.20 on Oct 10 2026.

Capabilities

struck through = not supported
Input 1/4
Text ✓ Image Audio Video
Output
Text ✓
Features 3/9
Prompt caching ✓ Reasoning ✓ Coding Fast inference Long context ✓ Open weights Multimodal Web search Realtime

Benchmark performance

accuracy % · higher is better
Avg benchmark score57%
Perf per $/Mtok361.9
GPQA Diamond vendor
89%
SWE-Bench Verified vendor
70.6%
Terminal-Bench 2.1
57%
LiveCodeBench vendor
87.8%
MCP Atlas vendor
61.4%
BrowseComp vendor
49.2%
Independent composite scores
  • AA Intelligence Index: 42 (Artificial Analysis composite across reasoning, knowledge and coding evals)
  • LMSYS Chatbot Arena: 1376.4 ELO (Human preference)
How it stacks up
  • Ranks #71 of 96 benchmarked models by average score
  • Ranks #92 of 187 comparably-measured models by percentile score, across 3 independent measurements
  • Ranks #8 of 187 comparably-tested models by normalized performance per dollar
  • Strongest at Terminal-Bench 2.1 — 57%, #35 of 47

59.3 tokens/sec output

Source: Artificial Analysis, LMSYS Chatbot Arena (UC Berkeley), Upstage Solar Pro 4 launch blog · updated · See full rankings →

Specifications

Provider
Upstage
Context window
524K tokens
Modality
text
Parameters
Proprietary
Open source
No — proprietary
Released
Status
Current
Last updated
Tags
mid-tierreasoningcachinglong-context

Availability verified: — listed on Upstage's own page

Official pricing page