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 OpenAI: GPT-5 Pro
OpenAI: GPT-5 Pro wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
GPT-5 Pro is OpenAI’s most advanced model, offering major improvements in reasoning, code quality, and user experience. It is optimized for complex tasks that require step-by-step reasoning, instruction following, and accuracy in high-stake…
Model details →Side-by-side comparison
| Capability | AionLabs: Aion-2.0 | OpenAI: GPT-5 Pro | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 131K | 400K | 🏆 OpenAI: GPT-5 Pro |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $0.80 | $15.00 | 🏆 AionLabs: Aion-2.0 |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $1.60 | $120.00 | 🏆 AionLabs: Aion-2.0 |
| Tool / function calling First-class support for emitting structured tool calls. | — | Yes | 🏆 OpenAI: GPT-5 Pro |
| Vision input Accepts image inputs alongside text. | — | Yes | 🏆 OpenAI: GPT-5 Pro |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | Yes | Tie |
Frequently asked questions
Is AionLabs: Aion-2.0 better than OpenAI: GPT-5 Pro?
OpenAI: GPT-5 Pro wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between AionLabs: Aion-2.0 and OpenAI: GPT-5 Pro?
Input: $0.80 vs $15.00 per 1M tokens. Output: $1.60 vs $120.00 per 1M tokens.
What context windows do AionLabs: Aion-2.0 and OpenAI: GPT-5 Pro support?
AionLabs: Aion-2.0 supports up to 131K tokens. OpenAI: GPT-5 Pro supports up to 400K tokens.
Do both AionLabs: Aion-2.0 and OpenAI: GPT-5 Pro support tool calling?
AionLabs: Aion-2.0: not advertised. OpenAI: GPT-5 Pro: yes.
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)