Solar Pro3: API pricing, providers and specs
Solar Pro3 is a text model by Upstage. 2 providers serve it, from $0.60 to $0.635 /1M; the lowest price is at OpenRouter.
How Solar Pro3 compares
Against the 737 text models on the site priced the same way.
- Mid-priced: its lowest price is $0.60 /1M against a median of $1.10; 39% of comparable models cost less.
- Its 131K-token context window is larger than 21% of them (median 262K), about 200 pages of text.
- 2 providers serve it; 36% of comparable models have fewer.
Solar Pro3 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 | $0.15/1M | From$0.60/1M | $0.015/1M | 131K |
| AI/ML API | $0.159/1M | $0.635/1M | $0.016/1M | — |
- OpenRouterFrom$0.60
- AI/ML API$0.635
Specs
- Type
- Text
- Maker
- Upstage
- Inputs
- Text
- Outputs
- Text
- Context
- 131K≈ 200 pages of text
- Max output
- 118K
- Capabilities
- Prompt caching, JSON, Reasoning, Tool calling
- Released
- Jan 27, 2026
- License
- —
- Open weights
- —
Alternatives to Solar Pro3
Same kind of model from other makers, at a similar price.
| Model | Lowest price | Context | Arena | Providers |
|---|---|---|---|---|
| Solar Pro3this model | $0.60/1M | 131K | — | 2 |
 GLM-5.3 | $1.10/1M | 1.05M | 1623 | 49 |
| 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 |
 Sonar | $1/1M | 127K | — | 9 |
| GLM-5.2 | $1.80/1M | 1M | 1604 | 44 |
| Grok Build 0.1 | $1.60/1M | 256K | — | 18 |
| Claude Haiku 5.5 | $0.30/1M | 1M | 1585 | 27 |
More from Upstage
Solar Pro3 FAQ
The lowest price for Solar Pro3 is $0.60 /1M, at OpenRouter.
OpenRouter, at $0.60 /1M. 2 providers serve Solar Pro3; the table above lists every one with its price.
Solar Pro3 reads up to 131K tokens per request and writes up to 118K.
We have not found Solar Pro3's weights published by its maker.
2 API providers serve Solar Pro3. Compare their prices above, or open a provider to see everything it offers.
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