Solar Mini 4: API pricing, providers and specs
Solar Mini 4 is a text model by Upstage. 2 providers serve it, from $0.20 to $0.423 /1M; the lowest price is at OpenRouter.
How Solar Mini 4 compares
Against the 737 text models on the site priced the same way.
- Cheap for its class: at $0.20 /1M, its lowest price undercuts 85% of comparable models (median $1.10).
- Its 524K-token context window is larger than 66% of them (median 262K), about 790 pages of text.
- 2 providers serve it; 36% of comparable models have fewer.
Solar Mini 4 prices by provider
Every provider's list price, read from its own price page or API. A price marked “from” changes with context length, resolution or mode.
| Provider | Input | Output | Prompt caching | Context |
|---|---|---|---|---|
| OpenRouter | $0.05/1M | From$0.20/1M | $0.005/1M | 524K |
| AI/ML API | $0.106/1M | $0.423/1M | $0.011/1M | — |
- OpenRouterFrom$0.20
- AI/ML API$0.423
Specs
- Type
- Text
- Maker
- Upstage
- Inputs
- Text
- Outputs
- Text
- Context
- 524K≈ 790 pages of text
- Max output
- 131K
- Capabilities
- Prompt caching, JSON, Reasoning, Tool calling
- Released
- Sep 23, 2026
- License
- proprietary
- Open weights
- No, API only
- Monthly searches
- 6K
Alternatives to Solar Mini 4
Same kind of model from other makers, at a similar price.
| Model | Lowest price | Context | Arena | Providers |
|---|---|---|---|---|
| Solar Mini 4this model | $0.20/1M | 524K | — | 2 |
 GLM-5.3-Flash | $0.20/1M | 1.05M | 1608 | 45 |
 Qwen3.8 27B | $0.50/1M | 262K | 1591 | 33 |
| GPT-6 Luna | $0.40/1M | 1.05M | 1578 | 28 |
| Claude Haiku 5.5 | $0.30/1M | 1M | 1585 | 27 |
| Qwen3.8 Flash Next | $0.376/1M | 262K | 1628 | 5 |
 DeepSeek V4 Flash | $0.17/1M | 1.05M | — | 26 |
| DeepSeek V4 Flash Vision Exp | $0.294/1M | 1.05M | — | 26 |
| DeepSeek V4 Pro | $0.418/1M | 1.05M | — | 33 |
More from Upstage
Solar Mini 4 FAQ
The lowest price for Solar Mini 4 is $0.20 /1M, at OpenRouter.
OpenRouter, at $0.20 /1M. 2 providers serve Solar Mini 4; the table above lists every one with its price.
Solar Mini 4 reads up to 524K tokens per request and writes up to 131K.
No. Solar Mini 4 is only available through an API; Upstage does not publish its weights.
2 API providers serve Solar Mini 4. Compare their prices above, or open a provider to see everything it offers.
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