Solar Mini 4
Upstage · Proprietary · Released Sep 23, 2026 · upstage/solar-mini4
Best $0.05 in / $0.20 out via Upstage
524K contextToolsReasoningStructured outputPrompt caching
Available from 2 providersUSD / MTOK · PRICES 20 MINUTES AGO · SPEED 19 DAYS AGO
EST. MONTHLY COSTclick a row for detail · click headers to sort
| PROVIDER | INPUT | OUTPUT | CACHE | CONTEXT | QUANT | TTFT | TPS | UPTIME |
|---|---|---|---|---|---|---|---|---|
 Upstage1ST PARTY | $0.05 | $0.20 | $0.005 | 524K | — | 1.7s | 132 tok/s | 100.0% |
| Upstage1ST PARTY | $0.05 | $0.20 | $0.005 | 524K | — | — | — | 100.0% |
TTFT/TPS: median (P50) over trailing 504h · chat10k profile (~10K in / 200 out) · measured via OpenRouter routing · methodology v1.1 · measured 19 days ago
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Pricing variants · USD / MTok in / out
STANDARD
$0.05 / $0.20
per MTok in / out
CACHE READ $0.005
Recent changesRSS ↗
Sep 23, 2026model added
About
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...
Specifications
Context window524,288
Max output131,072
Modalities intext
Modalities outtext
LicenseProprietary
ReleasedSep 23, 2026
TokenizerOther
Related
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[](https://modelindex.ai/models/upstage/solar-mini4)Sources
OpenRouter API20 minutes ago
AGGREGATORModelIndex benchmarks19 days ago
MEASUREDVerified 20 minutes ago · list prices, not negotiated rates.