Made by Upstage
Solar Mini 4 has no published cutoff.
Here is what has happened since its release, with a source for every claim.
At least221AI events since its release on 1 October 2026
- 10 of them historic
- 9 AI models released after it in our model registry
- 9 days of news since its release
Upstage doesn’t publish a training cutoff, so we count from its release date. The real gap is larger.
Model ids, prices and docs: Solar Mini 4 in the model registry
Five things it has never heard of
-
Anthropic discloses unintended model actions
Confirmed
-
Mistral releases Mistral Large 4 (“le Chonk”)
Confirmed
-
Departing OpenAI safety lead David Robinson writes in The Atlantic
Confirmed
-
Claude Haiku 5.5 released at $0.10/$0.50, matching GPT-6 Luna
Confirmed
-
OpenAI brings GPT-6 to all ChatGPT users with ‘Intelligent UI’ answers built from interactive components
Confirmed
Picked by rule: the biggest confirmed stories after its release, weighted toward news about its maker. Models often call such news fiction (case 020).
Four assistants, one scale
The four assistants we feature, for comparison. Solar Mini 4 has no published cutoff, so it has no row of its own.
- GPT-6 Astra 234 at launch, 833 today
- Claude Opus 5.5 315 at launch, 771 today
- Gemini 3.8 Flash 251 at launch, 856 today
- Grok 4.7 326 at launch, 801 today
Show as a table
| Model | Cutoff | Released | Missing at launch | Missing today |
|---|---|---|---|---|
| GPT-6 Astra | April 2026 | 3 September 2026 | 234 | 833 |
| Claude Opus 5.5 | June 2026 | 22 September 2026 | 315 | 771 |
| Gemini 3.8 Flash | March 2026 | 2 September 2026 | 251 | 856 |
| Grok 4.7 | May 2026 | 21 September 2026 | 326 | 801 |
Your card
This is the image people see when you share this page. It links back here, with the sources.
postcutoff.com/you/upstage-solar-mini-4.