Aion-2.0: API pricing, providers and specs
Aion-2.0 is a text model by Aion Labs. 2 providers serve it, from $1.60 to $1.69 /1M; the lowest price is at OpenRouter.
A newer version is out: Aion-3.0 · released Jul 7, 2026
How Aion-2.0 compares
Against the 737 text models on the site priced the same way.
- Mid-priced: its lowest price is $1.60 /1M against a median of $1.10; 59% of comparable models cost less.
- Its 131K-token context window is larger than 21% of them (median 262K), about 200 pages of text.
- 2 providers serve it; 36% of comparable models have fewer.
Aion-2.0 prices by provider
Every provider's list price, read from its own price page or API. A price marked “from” changes with context length, resolution or mode.
| Provider | Input | Output | Prompt caching | Context |
|---|---|---|---|---|
| OpenRouter | $0.80/1M | From$1.60/1M | $0.20/1M | 131K |
| AI/ML API | $0.846/1M | $1.69/1M | $0.212/1M | — |
- OpenRouterFrom$1.60
- AI/ML API$1.69
Specs
- Type
- Text
- Maker
- Aion Labs
- Inputs
- Text
- Outputs
- Text
- Context
- 131K≈ 200 pages of text
- Max output
- 33K
- Capabilities
- Prompt caching, JSON, Reasoning, Tool calling
- Released
- Feb 23, 2026
- License
- proprietary
- Open weights
- No, API only
- Monthly searches
- 9K
Alternatives to Aion-2.0
Same kind of model from other makers, at a similar price.
| Model | Lowest price | Context | Arena | Providers |
|---|---|---|---|---|
| Aion-2.0this model | $1.60/1M | 131K | — | 2 |
 GLM-5.3 | $1.10/1M | 1.05M | 1623 | 49 |
 Qwen3.8 2.4T A95B | $4.11/1M | 1M | — | 22 |
| Grok 4.7 | $4.80/1M | 500K | 1637 | 28 |
 Gemini 3 Flash | $2.40/1M | 1.05M | 1466 | 5 |
 Mistral Large 4 | $2.09/1M | 1.05M | 1543 | 13 |
 Muse Spark 1.3 | $4.25/1M | 1.05M | 1657 | 11 |
 Sonar | $1/1M | 127K | — | 9 |
| GLM-5.2 | $1.80/1M | 1M | 1604 | 44 |
More from Aion Labs
Aion-2.0 FAQ
The lowest price for Aion-2.0 is $1.60 /1M, at OpenRouter.
OpenRouter, at $1.60 /1M. 2 providers serve Aion-2.0; the table above lists every one with its price.
Aion-2.0 reads up to 131K tokens per request and writes up to 33K.
No. Aion-2.0 is only available through an API; Aion Labs does not publish its weights.
2 API providers serve Aion-2.0. Compare their prices above, or open a provider to see everything it offers.
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