Aion-2.0
Summary
Aion-2.0 is a language model from Aion Labs, released on 23 Feb 2026. It accepts text and generates text, with a 131K-token context window and up to 33K output tokens per response. As of 4 Oct 2026, the lowest listed API price is $0.80 per million input tokens and $1.60 per million output tokens (OpenRouter), across 1 provider we track.
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....
Last verified 4 Oct 2026. Every figure on this page links to its source.
Specifications
| Developer | Aion Labs |
|---|---|
| Release date | 23 Feb 2026 [OpenRouter] |
| Status | Generally available |
| Context window | 131K (131,072 tokens) [OpenRouter] |
| Max output | 33K tokens [OpenRouter] |
| Input | Text [OpenRouter] |
| Output | Text [OpenRouter] |
| Reasoning mode | Yes [OpenRouter] |
| Tool calling | Yes [OpenRouter] |
| Structured output | No [OpenRouter] |
Aion-2.0 API pricing by provider
USD per million tokens. Sorted by input price.
| Provider | Input | Output | Cached input | Context | Source |
|---|---|---|---|---|---|
| OpenRouter aion-labs/aion-2.0 | $0.80 | $1.60 | $0.20 | 131K | OpenRouter, 4 Oct 2026 |
Frequently asked questions
What is the context window of Aion-2.0?
Aion-2.0 has a context window of 131,072 tokens (131K) and can generate up to 32,768 tokens in a single response, according to OpenRouter.
How much does the Aion-2.0 API cost?
Aion-2.0 is listed from $0.80 per million input tokens and $1.60 per million output tokens (OpenRouter). Prices last verified 4 Oct 2026.
When was Aion-2.0 released?
Aion Labs released Aion-2.0 on 23 Feb 2026, according to OpenRouter.
Change history
No changes detected since we started tracking this model. We re-check every source daily.