Aion-2.0 pricing and routing profile
Aion-2.0 from Aion Labs lists at $0.80 per million input tokens and $1.60 per million output tokens, with a 131,072-token context window. Prices from OpenRouter's catalogue on 2026-09-28.
Tool callingReasoning control
Cost per 1,000 requests
| Request shape | List cost |
|---|---|
| Classification or routing (600 tokens in, 10 out) | $0.496 |
| Chat reply (2,000 in, 400 out) | $2.24 |
| Retrieval-augmented answer (8,000 in, 500 out) | $7.20 |
Before prompt caching. Try your own shape in the cost calculator.
Can Gimbix route to it first?
Not as a first-answer model through OpenRouter: no host returns token log probabilities for Aion-2.0. It can still be the model Gimbix falls back to when a cheaper model is unsure.
Cheaper models that can answer first
Models priced below Aion-2.0 that expose a confidence signal. Whether they answer your traffic as well is what a Gimbix pilot measures.
| Model | Input / output per 1M | Cheaper on a chat reply |
|---|---|---|
| Llama 3.3 Euryale 70B | $0.65 / $0.75 | 29% |
| DeepSeek V4 Flash Vision Exp | $0.44 / $1.32 | 37% |
| MiMo-V2.5-Pro | $0.435 / $0.87 | 46% |
| Qwen3.7 Plus | $0.32 / $1.28 | 49% |
| Qwen3.5 Plus 2026-02-15 | $0.26 / $1.56 | 49% |
| Muse Glimmer 30B | $0.30 / $1.20 | 52% |
Questions
How much does Aion-2.0 cost?
Aion-2.0 lists at $0.80 per million input tokens and $1.60 per million output tokens on OpenRouter as of 2026-09-28. A typical chat reply of 2,000 input and 400 output tokens costs about $2.24 per 1,000 requests.
What is the context window of Aion-2.0?
131,072 tokens.
Can a cheaper model replace Aion-2.0?
Sometimes. Gimbix proves it on your own traffic before routing: the cheaper model must match Aion-2.0 on one half of your requests and make at most three answers worse on the other.