Aion-1.0-Mini 32B parameter model is a distilled version of the DeepSeek-R1 model, designed for strong performance in reasoning domains such as mathematics, coding, and logic. It is a modified variant of a FuseAI model that outperforms R1-D…
Model details →AionLabs: Aion-1.0-Mini vs StepFun: Step 3.5 Flash (free)
StepFun: Step 3.5 Flash (free) wins on 4 of 6 axes — pricing and capability skew in its favour for most workloads.
Step 3.5 Flash is StepFun's most capable open-source foundation model. Built on a sparse Mixture of Experts (MoE) architecture, it selectively activates only 11B of its 196B parameters per token. It is a reasoning model that is incredibly s…
Model details →Side-by-side comparison
| Capability | AionLabs: Aion-1.0-Mini | StepFun: Step 3.5 Flash (free) | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 131K | 256K | 🏆 StepFun: Step 3.5 Flash (free) |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $0.70 | $0.00 | 🏆 StepFun: Step 3.5 Flash (free) |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $1.40 | $0.00 | 🏆 StepFun: Step 3.5 Flash (free) |
| Tool / function calling First-class support for emitting structured tool calls. | — | Yes | 🏆 StepFun: Step 3.5 Flash (free) |
| 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-Mini better than StepFun: Step 3.5 Flash (free)?
StepFun: Step 3.5 Flash (free) 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-Mini and StepFun: Step 3.5 Flash (free)?
Input: $0.70 vs $0.00 per 1M tokens. Output: $1.40 vs $0.00 per 1M tokens.
What context windows do AionLabs: Aion-1.0-Mini and StepFun: Step 3.5 Flash (free) support?
AionLabs: Aion-1.0-Mini supports up to 131K tokens. StepFun: Step 3.5 Flash (free) supports up to 256K tokens.
Do both AionLabs: Aion-1.0-Mini and StepFun: Step 3.5 Flash (free) support tool calling?
AionLabs: Aion-1.0-Mini: not advertised. StepFun: Step 3.5 Flash (free): yes.