Solar Mini 4
Solar Mini 4Alternatives?
CheaperMiMo v2.6 ProthinkingOpen+4%-64%$0.13Pass back reasoning_content+3
OpenKimi K3max+6%+447%$2.00Sampling parameters are fixed+3
CheaperGPT-6.1 Sollowsame-64%$0.13Remove unsupported parameters+5CheaperGPT-5.6 Lunamaxsame-51%$0.18
CheaperMuse Glimmer 30BhighOpensame-84%$0.058Context: 524K → 131KMiMo v2.6 ProthinkingOpen+4%-64%$0.13Pass back reasoning_content+3GPT-6.1 Sollowsame-64%$0.13Remove unsupported parameters+5GPT-5.6 Lunamaxsame-51%$0.18Muse Glimmer 30BhighOpensame-84%$0.058Context: 524K → 131KGPT-6 Lunamaxsame-81%$0.068Function calling only with none · Chat Completions+3MiMo v2.6 ProthinkingOpen+4%-64%$0.13Pass back reasoning_content+3
Step 5 PreviewthinkingOpen+6%+181%$1.03web_search not available · Chat Completions+2Kimi K3maxOpen+6%+447%$2.00Sampling parameters are fixed+3
Claude Fable 5.1max+2%+1,987%$7.63Replace forced tool_choice+5Kimi K3maxOpen+6%+447%$2.00Sampling parameters are fixed+3Step 5 PreviewthinkingOpen+6%+181%$1.03web_search not available · Chat Completions+2MiMo v2.6 ProthinkingOpen+4%-64%$0.13Pass back reasoning_content+3Muse Glimmer 30BhighOpensame-84%$0.058Context: 524K → 131K
Ling 3.1 FlashOpensame+173%$1.00Solar Open2 250BOpen-14%——Solar Pro 4thinking-15%+95%$0.71Solar Open 100BOpen-51%——Context: 524K → 128KSolar Pro 3high-61%-78%$0.079Context: 524K → 131KSolar Pro 2highn/a—$0.15 / $0.60Context: 524K → 66KSolar Pro 2 (Preview)highn/a——Context: 524K → 64KAll Upstage models →Benchmarks
in Chat & KnowledgeFAQ
How much does Solar Mini 4 cost?›
$0.05 per 1M input tokens and $0.20 per 1M output tokens; cached input $0.005 per 1M. A typical benchmark task costs about $0.37 at default effort.
Is Solar Mini 4 free to use?›
There is no free API; the cheapest paid price is $0.10 per 1M input tokens.
How good is Solar Mini 4, and what is it best at?›
#99 of 334 in Chat & Knowledge, #54 of 132 in Coding, #57 of 133 in Agents & Tool Use, #87 of 133 in Vision & Documents. Strongest at: Long context.
Is Solar Mini 4 better than GPT-6 Luna?›
On AA-LCR (long context) 1.1, Solar Mini 4 scores 83.3 vs 83.3 — about the same. It is 439% more expensive per task.
How can I use Solar Mini 4?›
Through the API of Upstage.
What is the context window of Solar Mini 4?›
524K tokens, with up to 131K output tokens.
When was Solar Mini 4 released? Is there a newer version?›
Released 2026-09-22. It is the current version in its line.
Is Solar Mini 4 open source?›
No, Solar Mini 4 is a closed model available through an API. The closest open-weights option here is Kimi K3.
Can Solar Mini 4 read images?›
No, it accepts text only.
What is Solar Mini 4?›
Solar Mini 4 is a closed language model from Upstage, released Sep 2026.
What are the best alternatives to Solar Mini 4?›
MiMo v2.6 Pro (cheaper), Kimi K3 (open weights).