Solar Mini 4: Benchmarks, Pricing & Context Window
Solar Mini 4 is a language model from Upstage, released in September 2026, with a 524K-token context window, and pricing from $0.100/M input, $0.010/M cached input, $0.400/M output.
Solar Mini 4 is Upstage's cost-efficient proprietary MoE language model (35B total / 3B active) for agentic use where speed and cost matter. API id solar-mini4 (version solar-mini4-260922). Text→text with English, Korean, and Japanese;
Solar Mini 4 benchmarks
Capability tiers
Standing within each category, adjusted for leaderboard depth.
Real tasks performance
High-confidence performance for Solar Mini 4 across real-world prompt categories. Only 95% intervals at most 4 points wide are shown.
Performance by conversation depth
How Solar Mini 4 holds up as conversations get longer.
Quality Tracker
Solar Mini 4 Performance Across Datasets
Scores sourced from the model's scorecard, paper, or official blog posts
llm-stats.com - Wed Oct 07 2026Solar Mini 4 pricing
Providers
Solar Mini 4 starts at $0.100 per million input tokens and $0.400 per million output tokens via Upstage. Reused prompt prefixes cost $0.0100 per million cached input tokens.
| Provider | Input $/M | Cached input $/M | Output $/M | Context in / out | TTFT p95 s | Output p5 c/s | Modalities in / out |
|---|---|---|---|---|---|---|---|
 Upstage | $0.100 | $0.0100 | $0.400 | 524.3K/131.1K | — | — | / |
Cached input is the discounted price for prompt tokens served from a provider cache. TTFT is time to first token. Output is characters per second; p5 is the sustained floor exceeded by 95% of observed requests.
Solar Mini 4 context window
Input and output token limits for Solar Mini 4, plus how it ranks on long-context understanding.
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Solar Mini 4 latency
Solar Mini 4 time to first token, sustained output throughput, and failed-request rate from live model usage over the trailing 7 days.
Solar Mini 4 examples
Recent arena outputs from Solar Mini 4, picked from the highest-ranked matchups.
Solar Mini 4 license
Solar Mini 4 is a proprietary model available under its provider's product and API terms, has 35.0B parameters, has a knowledge cutoff of February 2026.
- License
- Proprietary
- Hosted access
- Parameters
- 35.0B
- Knowledge cutoff
- February 2026
Proprietary license - usage restrictions apply
Solar Mini 4 resources
Official sources for Solar Mini 4: provider documentation, official playground, official launch post.
Solar Mini 4 vs other models
The most-compared alternatives to Solar Mini 4 are Kimi K2.5, Kimi K2-Thinking-0905, Nemotron 3 Ultra (550B A55B). Open any pair side-by-side for benchmarks, pricing, context, and latency.
Models like Solar Mini 4
Models ranked just above and below Solar Mini 4 by LLM Stats score.
FAQ
Common questions about Solar Mini 4.