Aion 3.5 is a multi-model roleplaying and storytelling system from AionLabs, built on the GLM family of models. It uses a collaborative generation process in which multiple specialized models each...
Model details →AionLabs: Aion 3.5 vs DeepSeek: DeepSeek V3.1 Terminus
DeepSeek: DeepSeek V3.1 Terminus wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
DeepSeek-V3.1 Terminus is an update to [DeepSeek V3.1](/deepseek/deepseek-chat-v3.1) that maintains the model's original capabilities while addressing issues reported by users, including language consistency and agent capabilities, further …
Model details →Side-by-side comparison
| Capability | AionLabs: Aion 3.5 | DeepSeek: DeepSeek V3.1 Terminus | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 262K | 164K | 🏆 AionLabs: Aion 3.5 |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $3.00 | $0.27 | 🏆 DeepSeek: DeepSeek V3.1 Terminus |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $6.00 | $1.00 | 🏆 DeepSeek: DeepSeek V3.1 Terminus |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | Yes | Tie |
| 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 3.5 better than DeepSeek: DeepSeek V3.1 Terminus?
DeepSeek: DeepSeek V3.1 Terminus wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between AionLabs: Aion 3.5 and DeepSeek: DeepSeek V3.1 Terminus?
Input: $3.00 vs $0.27 per 1M tokens. Output: $6.00 vs $1.00 per 1M tokens.
What context windows do AionLabs: Aion 3.5 and DeepSeek: DeepSeek V3.1 Terminus support?
AionLabs: Aion 3.5 supports up to 262K tokens. DeepSeek: DeepSeek V3.1 Terminus supports up to 164K tokens.
Do both AionLabs: Aion 3.5 and DeepSeek: DeepSeek V3.1 Terminus support tool calling?
AionLabs: Aion 3.5: yes. DeepSeek: DeepSeek V3.1 Terminus: yes.