Aion-1.0 is a multi-model system designed for high performance across various tasks, including reasoning and coding. It is built on DeepSeek-R1, augmented with additional models and techniques such as Tree of Thoughts (ToT) and Mixture of E…
Model details →AionLabs: Aion-1.0 vs Upstage: Solar Pro 4
Upstage: Solar Pro 4 wins on 4 of 6 axes — pricing and capability skew in its favour for most workloads.
Solar Pro 4 is Upstage's cost-efficient large language model, featuring a 524K context window. It is built for long-horizon tasks and agentic workflows, with strong capabilities in office productivity, document-intensive...
Model details →Side-by-side comparison
| Capability | AionLabs: Aion-1.0 | Upstage: Solar Pro 4 | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 131K | 524K | 🏆 Upstage: Solar Pro 4 |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $4.00 | $0.09 | 🏆 Upstage: Solar Pro 4 |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $8.00 | $0.36 | 🏆 Upstage: Solar Pro 4 |
| Tool / function calling First-class support for emitting structured tool calls. | — | Yes | 🏆 Upstage: Solar Pro 4 |
| Vision input Accepts image inputs alongside text. | — | — | Tie |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | Yes | Tie |
Frequently asked questions
Is AionLabs: Aion-1.0 better than Upstage: Solar Pro 4?
Upstage: Solar Pro 4 wins on 4 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between AionLabs: Aion-1.0 and Upstage: Solar Pro 4?
Input: $4.00 vs $0.09 per 1M tokens. Output: $8.00 vs $0.36 per 1M tokens.
What context windows do AionLabs: Aion-1.0 and Upstage: Solar Pro 4 support?
AionLabs: Aion-1.0 supports up to 131K tokens. Upstage: Solar Pro 4 supports up to 524K tokens.
Do both AionLabs: Aion-1.0 and Upstage: Solar Pro 4 support tool calling?
AionLabs: Aion-1.0: not advertised. Upstage: Solar Pro 4: yes.