Solar Mini 4
by Upstagetext->text2 endpoints
Neura Intelligence Index
57.1/ 100
Rank
#163—
Confidence
lowBenchmarks
1(3% coverage)
Overview
Solar Mini 4 is Upstage's compact, cost-efficient language model, a 35B-parameter mixture-of-experts with 3B active parameters and a 524K context window. It is built for agentic use cases where response speed and cost matter, with fluent Korean alongside strong English and Japanese, and support for long-context workloads.
When using BYOK with ZDR enforcement, the Console API key must belong to a ZDR-enabled Upstage organization. Contact Upstage to enable ZDR on your org.
Capabilities
Text generation
Tool use / Function calling
Structured output
Extended reasoning
Prompt caching
Long context
Top-P sampling
Modalities
Input
Text
Output
Text
Technical Specifications
Context Window
524.3K tokens
Max Output
131.1K tokens
Tokenizer
Other
Uptime (24h)
10000.0%
Parameters
35000000000B
Country
🇰🇷KR
Release Date
September 22, 20261mo
Supported Parameters
frequency_penaltyinclude_reasoningmax_tokensparallel_tool_callspresence_penaltyreasoningreasoning_effortresponse_formatstructured_outputstemperaturetool_choicetoolstop_p
Performance Over Time
Pricing
Per 1M tokens
Input$0.05
Output$0.20
Cache read$0.0050
Added
September 23, 2026
Last synced 10/23/2026