Aion-2.0 is a variant of DeepSeek V3.2 optimized for immersive roleplaying and storytelling. It is particularly strong at introducing tension, crises, and conflict into stories, making narratives feel more engaging. It also handles mature a…
Model details →AionLabs: Aion-2.0 vs Baidu: ERNIE 4.5 21B A3B Thinking
Baidu: ERNIE 4.5 21B A3B Thinking wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
ERNIE-4.5-21B-A3B-Thinking is Baidu's upgraded lightweight MoE model, refined to boost reasoning depth and quality for top-tier performance in logical puzzles, math, science, coding, text generation, and expert-level academic benchmarks.
Model details →Side-by-side comparison
| Capability | AionLabs: Aion-2.0 | Baidu: ERNIE 4.5 21B A3B Thinking | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 131K | 131K | Tie |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $0.80 | $0.07 | 🏆 Baidu: ERNIE 4.5 21B A3B Thinking |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $1.60 | $0.28 | 🏆 Baidu: ERNIE 4.5 21B A3B Thinking |
| Tool / function calling First-class support for emitting structured tool calls. | — | — | 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-2.0 better than Baidu: ERNIE 4.5 21B A3B Thinking?
Baidu: ERNIE 4.5 21B A3B Thinking wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between AionLabs: Aion-2.0 and Baidu: ERNIE 4.5 21B A3B Thinking?
Input: $0.80 vs $0.07 per 1M tokens. Output: $1.60 vs $0.28 per 1M tokens.
What context windows do AionLabs: Aion-2.0 and Baidu: ERNIE 4.5 21B A3B Thinking support?
AionLabs: Aion-2.0 supports up to 131K tokens. Baidu: ERNIE 4.5 21B A3B Thinking supports up to 131K tokens.
Do both AionLabs: Aion-2.0 and Baidu: ERNIE 4.5 21B A3B Thinking support tool calling?
AionLabs: Aion-2.0: not advertised. Baidu: ERNIE 4.5 21B A3B Thinking: not advertised.
Compare AionLabs: Aion-2.0 with other models
vs AI21: Jamba Large 1.7vs AionLabs: Aion-1.0vs AionLabs: Aion-1.0-Minivs AionLabs: Aion-RP 1.0 (8B)