Upstage model product
Solar Mini 4
Solar Mini 4 is Upstage's proprietary Mixture-of-Experts language model with 35B total parameters and 3B active parameters.
Updated Oct 23, 2026. Default version: Solar Mini 4
LLMBoard Score54.4Solar Mini 4
Coverage0%6 benchmark families
Context window524.3KTokens
Official input price$0.10Upstage API
Solar Mini 4 Capability Profile
This profile uses the model's current scored version. Arena ratings and prices are shown separately.
Solar Mini 4 Benchmark Results
Benchmark scores for Solar Mini 4.
Sort by
Benchmark | Score | Rank | Participants | Percentile | Evidence | Evaluated |
|---|
| BenchmarkAA-LCR | Score83.30% | Rank01 | Participants27 | Percentile100.00% | EvidenceB | Evaluated |
| BenchmarkAA-Briefcase v1.1 | Score872.00 points | Rank05 | Participants5 | Percentile0.00% | EvidenceB | Evaluated |
| BenchmarkGDPval-AA 2.1 | Score1,072.00 points | Rank06 | Participants6 | Percentile0.00% | EvidenceB | Evaluated |
| BenchmarkSciCode | Score47.60% | Rank12 | Participants31 | Percentile63.33% | EvidenceB | Evaluated |
| BenchmarkHumanity's Last Exam (no tools, text-only) | Score25.80% | Rank13 | Participants14 | Percentile7.69% | EvidenceB | Evaluated |
| BenchmarkTerminal-Bench 4.0 | Score1.00% | Rank29 | Participants29 | Percentile0.00% | EvidenceB | Evaluated |
Solar Mini 4 Arena Results
Preference and agent-evaluation results for the default version.
No Arena results
The default version does not have a matching Arena result yet.
Solar Mini 4 Pricing
Official vendor API pricing appears first, followed by individual provider offers.
- Official API
- $0.10 input, $0.40 output per 1M
- Official provider
- Upstage
- Lowest third-party
- From $0.05 input, $0.20 output per 1M via NanoGPT
- Tracked offerings
- 4
Sort by
Provider | Provider model ID | Region | Input / 1M | Output / 1M | Context | Updated |
|---|
| ProviderNanoGPT | Provider model IDupstage/solar-mini4 | Regionglobal | Input / 1M$0.05 | Output / 1M$0.20 | Context524.3K | Updated |
| ProviderOpenRouter | Provider model IDupstage/solar-mini4 | Regionglobal | Input / 1M$0.05 | Output / 1M$0.20 | Context524.3K | Updated |
| ProviderKilo Gateway | Provider model IDupstage/solar-mini4 | Regionglobal | Input / 1M$0.10 | Output / 1M$0.40 | Context524.3K | Updated |
| ProviderUpstage | Provider model IDsolar-mini4 | Regionglobal | Input / 1M$0.10 | Output / 1M$0.40 | Context524.3K | Updated |
Official prices use only the vendor's configured official Provider and positive standard USD PAYG rates. Third-party offers remain explicitly labeled.
Solar Mini 4 Runtime Performance
Provider-specific output speed and catalog latency for Solar Mini 4. Runtime does not affect the capability score.
No runtime data
No provider-specific speed or latency record is linked to the default version yet.
Output Speed is generated output tokens received per second. Catalog latency is reported separately from observed provider TTFT.
Solar Mini 4 Specifications
Technical details for the model's default version.
- Version
- Solar Mini 4
- Released
- Sep 22, 2026
- Knowledge cutoff
- Feb 1, 2026
- Parameters
- 35B
- Context window
- 524.3K
- Max output
- 131.1K
- Inputs
- text
- Outputs
- text
- Open weights
- No
- License
- Proprietary
Solar Mini 4 Versions
Available versions of this model. The score column identifies the version used in the overall ranking.
Sort by
Version | Released | LLMBoard | Parameters | Context | Max output | Open weights | License |
|---|
| VersionSolar Mini 4 | Released | LLMBoard54.37 | Parameters35B | Context524.3K | Max output131.1K | Open weightsNo | LicenseProprietary |
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What is Solar Mini 4?
Key information about Solar Mini 4 and its available data.
Solar Mini 4 is a text-to-text language model from Upstage with API ID solar-mini4 and version solar-mini4-260922. It supports English, Korean, and Japanese, along with reasoning mode, tool calling, structured outputs, a 512K context window, and up to 128K output tokens.
Data as of 2026-10-22.
FAQ
Common questions about Solar Mini 4.
When was Solar Mini 4 released?
Solar Mini 4's default version was released on Sep 22, 2026.
How much does Solar Mini 4 cost?
Solar Mini 4's official API price is $0.10 per million input tokens and $0.40 per million output tokens via Upstage. The lowest tracked third-party offer starts at $0.05 input and $0.20 output via NanoGPT.
Who created Solar Mini 4?
Solar Mini 4 was created by Upstage.
What is the context window for Solar Mini 4?
The default version has a 524.3K token context window.
Is Solar Mini 4 open weight?
No. The default version is not marked as having publicly available weights.
How many API providers offer Solar Mini 4?
4 provider offerings are linked to the default version.