Aion-3.0 vs Claude Sonnet 5: side-by-side summary

Aion-3.0 and Claude Sonnet 5 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Aion-3.0, from Aion Labs, has a 131,072-token context window and is priced at $3/M tokens input, $6/M tokens output on OpenRouter.

Claude Sonnet 5, from Anthropic, has a 1,000,000-token context window and is priced at $2/M tokens input, $10/M tokens output on OpenRouter.

Context window

• Aion-3.0: 131,072 tokens
• Claude Sonnet 5: 1,000,000 tokens

Price

• Aion-3.0: $3/M tokens input, $6/M tokens output
• Claude Sonnet 5: $2/M tokens input, $10/M tokens output

Provided by

• Aion-3.0: Aion Labs
• Claude Sonnet 5: Anthropic

• Aion-3.0 model details, providers and pricing
• Claude Sonnet 5 model details, providers and pricing