Solar Mini 4
Solar Mini 4Ranking?
Alternatives?
CheaperGPT-6.1 Solhigh×2.1-13%$0.32Remove unsupported parameters+5BetterGPT-6 Lunamedium+24%-95%$0.017Function calling only with none · Chat Completions+3
OpenMiMo v2.6 Prothinking+93%-64%$0.13Pass back reasoning_content+3
CheaperDeepSeek V4.1 Flash 1017maxOpen+87%-28%$0.26Pass back reasoning_content · Chat Completions+4
CheaperClaude Haiku 5.5max+80%-42%$0.21Remove sampling parameters+5GPT-6.1 Solhigh×2.1-13%$0.32Remove unsupported parameters+5MiMo v2.6 ProthinkingOpen+93%-64%$0.13Pass back reasoning_content+3DeepSeek V4.1 Flash 1017maxOpen+87%-28%$0.26Pass back reasoning_content · Chat Completions+4Claude Haiku 5.5max+80%-42%$0.21Remove sampling parameters+5
MiniMax M3.1 Flashthinking+78%-40%$0.22Complete model response must be appendedGPT-6 Lunamedium+24%-95%$0.017Function calling only with none · Chat Completions+3Claude Haiku 5.5low+22%-93%$0.024Remove sampling parameters+5GPT-5.6 Lunahigh+34%-88%$0.044MiMo v2.6 FlashthinkingOpen+58%-83%$0.062Pass back reasoning_content+3GPT-6.1 Sollow+75%-64%$0.13Remove unsupported parameters+5MiMo v2.6 ProthinkingOpen+93%-64%$0.13Pass back reasoning_content+3DeepSeek V4.1 Flash 1017maxOpen+87%-28%$0.26Pass back reasoning_content · Chat Completions+4
GLM 5.3maxOpen+86%+449%$2.01Reasoning cannot be disabled+3
Step 5 PreviewthinkingOpen+82%+181%$1.03web_search not available · Chat Completions+2
Kimi K3maxOpen+81%+447%$2.00Sampling parameters are fixed+3Solar Pro 4thinking+10%+95%$0.71Solar Open2 250BOpensame——Solar Open 100BOpen-57%——Context: 524K → 128KSolar Pro 2 (Preview)high-62%——Context: 524K → 64KSolar Pro 3high-68%-78%$0.079Context: 524K → 131KSolar Pro 2high-69%—$0.15 / $0.60Context: 524K → 66KAll Upstage models →Benchmarks
all categoriesFAQ
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-5.4 Mini?›
On AA Intelligence Index 4.3.2, Solar Mini 4 scores 24.1 vs 24.1 — about the same. It is 18% cheaper 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 MiMo v2.6 Pro.
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?›
GPT-6.1 Sol (cheaper), GPT-6 Luna (better), MiMo v2.6 Pro (open weights).