Aion 2 is Aion Labs's language model with a 1.0M context window and up to 33K output tokens, starting at $0.8 / 1M input and $1.60 / 1M output. A DeepSeek V3.2-based model from AionLabs fine-tuned for immersive roleplaying and storytelling with a focus on narrative tension and conflict.
Specifications
Canonical IDaion-labs-2
TypeLanguage
StatusActive
CreatorAion LabsAion Labs
Providers
Context Window1.0M tokens
Max Output33K tokens
Input ModalitiesText
Output ModalitiesText
Reasoning Effortsdefault
Release Date · 8 months ago

Capabilities

Input1/5
Text✓
Image·
Audio·
Video·
PDF·
Output1/5
Text✓
Image·
Audio·
Video·
Embedding·
Capabilities4/13
Reasoning✓
Adaptive Reasoning·
Function Calling✓
Parallel Function Calling·
Structured Outputs✓
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching✓
Assistant Prefill·

Pricing by Provider

US Dollar ($)
Per 1M tokens
ProviderStandard
Input
$ / 1M
Output
$ / 1M
Cache Read
$ / 1M
OpenRouter logo
OpenRouter
aion-labs/aion-2.0
$0.8$1.60$0.2

Cost Calculator

US Dollar ($)
Preset:

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
Aion 3.5262K$3.00$6.00Available
Aion 3.5 Mini262K$0.700$1.40Available
Aion 21.0M$0.800$1.60Current
Aion 1131K——Available
Aion 1 Mini131K——Available

Model IDs

aion-labs-2
aion-labs/aion-2.0
openrouter/aion-labs/aion-2.0