Solar Pro 4: API pricing, providers and specs
Solar Pro 4 is a text model by Upstage. 3 providers serve it, from $0.127 to $1.20 /1M; the lowest price is at AI/ML API.
How Solar Pro 4 compares
Against the 737 text models on the site priced the same way.
- Cheap for its class: at $0.127 /1M, its lowest price undercuts 90% of comparable models (median $1.10).
- Its 524K-token context window is larger than 66% of them (median 262K), about 790 pages of text.
- 3 providers serve it; 52% of comparable models have fewer.
Solar Pro 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 |
|---|---|---|---|---|
| AI/ML API | $0.032/1M | $0.127/1M | $0.006/1M | — |
| OpenRouter | $0.15/1M | From$0.60/1M | $0.03/1M | 524K |
 AIHubMix | $0.30/1M | $1.20/1M | $0.06/1M | 524K |
- AI/ML API$0.127
- OpenRouterFrom$0.60
- AIHubMix$1.20
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
- Aug 10, 2026
- License
- —
- Open weights
- —
- Monthly searches
- 11K
Alternatives to Solar Pro 4
Same kind of model from other makers, at a similar price.
| Model | Lowest price | Context | Arena | Providers |
|---|---|---|---|---|
| Solar Pro 4this model | $0.127/1M | 524K | — | 3 |
 GLM-5.3-Flash | $0.20/1M | 1.05M | 1608 | 45 |
| 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 |
 Ling 3.1 Flash | $0.225/1M | 262K | — | 5 |
| Qwen2-1.5B-Instruct | $0.20/1M | — | — | 2 |
| Qwen3.5 Flash | $0.287/1M | 1M | — | 1 |
More from Upstage
Solar Pro 4 FAQ
The lowest price for Solar Pro 4 is $0.127 /1M, at AI/ML API.
AI/ML API, at $0.127 /1M. 3 providers serve Solar Pro 4; the table above lists every one with its price.
Solar Pro 4 reads up to 524K tokens per request and writes up to 131K.
We have not found Solar Pro 4's weights published by its maker.
3 API providers serve Solar Pro 4. Compare their prices above, or open a provider to see everything it offers.
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