Upstage API launches Solar Mini 4 at 50% off: $0.05/1M input through Oct 22
What happened
Between the Sep 21, 2026 and Sep 28, 2026 captures of Upstage's pricing page, Pulse recorded one change: New Solar Mini 4 model added ($0.10 input / $0.01 cached / $0.40 output per 1M tokens) with a 50% launch promo ($0.05/$0.005/$0.20) until 2026-10-22 UTC; standard pricing resumes 2026-10-23. Pulse files it as a packaging change (new plan) with an upward direction. Pulse's latest capture (Oct 26, 2026) lists Explore at $100, Build at $500, Scale at $5,000, Solar Pro 4 at $0.06 per 1M cached input tokens + $0.3 per 1M input tokens and Solar Pro 3 at $0.15 per 1M input tokens + $0.6 per 1M output tokens.
It lands 14 days after Upstage's previous change, "Upstage API promo tapers to 70% off, cuts cost calculator too" (Sep 14, 2026). Before that Pulse recorded "Upstage API: Solar Pro 4 discount extended at 70% off (was reverting to standard price)" (Sep 7, 2026), "Upstage API ends Solar Pro 4 free period — now 90% off until Sep 10, full rates from Sep 11" (Aug 17, 2026) and "Upstage API: File Search pricing dropped to Free + Embed trial/EOL extended" (Jul 28, 2026). Upstage has been tracked since 2026-04-29.
In the same window Anthropic, Together AI, OpenAI, Google and Mistral AI also changed their AI & Machine Learning pricing pages. Those moves are listed further down, and the Pulse Agent can compare them side by side.
- Solar Mini 4 · PlanNew plan
New Solar Mini 4 model added ($0.10 input / $0.01 cached / $0.40 output per 1M tokens) with a 50% launch promo ($0.05/$0.005/$0.20) until 2026-10-22 UTC; standard pricing resumes 2026-10-23.
| Plan | Field | Before | After | Change |
|---|---|---|---|---|
| Solar Mini 4 | Plan | New Solar Mini 4 model added ($0.10 input / $0.01 cached / $0.40 output per 1M tokens) with a 50% launch promo ($0.05/$0.005/$0.20) until 2026-10-22 UTC; standard pricing resumes 2026-10-23. | New plan | |
Values as written on Upstage's public pricing page in the two captures Pulse compared; where the page states no number, the cells give the wording before and after.
Evidence
The two captures Pulse comparedFull-page captures of Upstage's pricing page (www.upstage.ai) from Sep 21, 2026 and Sep 28, 2026; the change is marked near the top of the page.
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Upstage, the last 90 days
Full history- Oct 19, 2026packagingUpstage API deepens Solar Pro 4 promo to 70% off through Oct 19
- Oct 12, 2026packagingUpstage API trims Solar launch promos to 50% off, raising promo rates
- Oct 5, 2026packagingUpstage API deepens Solar Mini 4 promo to 70% off, sunsets Solar Pro 3
- Sep 28, 2026packagingUpstage API launches Solar Mini 4 at 50% off: $0.05/1M input through Oct 22 · this change
- Sep 14, 2026packagingUpstage API promo tapers to 70% off, cuts cost calculator too
- Sep 7, 2026packagingUpstage API: Solar Pro 4 discount extended at 70% off (was reverting to standard price)
- Aug 17, 2026packagingUpstage API ends Solar Pro 4 free period — now 90% off until Sep 10, full rates from Sep 11
- Jul 28, 2026decreaseUpstage API: File Search pricing dropped to Free + Embed trial/EOL extended
- Jul 13, 2026decreaseUpstage API: Embed 2 post-promo rate cut ($0.10→$0.02/1M tokens)
Across AI & Machine Learning in the same window
All AI & Machine Learning changes- AnthropicSep 28Anthropic API: Opus 5.5 launches, replaces Opus 5 as flagship
- Together AISep 25Together AI reveals NVIDIA HGX B300 pricing at $9.99/GPU/hr, $4.99 preemptible
- OpenAISep 25OpenAI refreshes plan taglines with benefit-led copy, prices unchanged
- GoogleSep 7Google Workspace: promo discount cut from 50% to 30%/20% off
- Mistral AIAug 17Mistral AI folds Education into Pro, adds bundled API credits to entry plans
Questions about this change
Did Upstage raise prices in September 2026?
No list-price increase was recorded between Sep 21, 2026 and Sep 28, 2026. The change Pulse detected was a packaging change: new plan.
What changed on Upstage's pricing page between Sep 21, 2026 and Sep 28, 2026?
New Solar Mini 4 model added ($0.10 input / $0.01 cached / $0.40 output per 1M tokens) with a 50% launch promo ($0.05/$0.005/$0.20) until 2026-10-22 UTC; standard pricing resumes 2026-10-23. Pulse compared the captures it took on Sep 21, 2026 and Sep 28, 2026; the before/after table above lists each item as written on the page.
How often does Upstage change its pricing?
Pulse recorded 5 other pricing-page changes for Upstage in the 90 days before this one; the previous change was "Upstage API promo tapers to 70% off, cuts cost calculator too" on Sep 14, 2026; Upstage has been tracked since 2026-04-29.