Aion-3.0-Mini vs GPT-5.6 Terra: side-by-side summary

Aion-3.0-Mini and GPT-5.6 Terra are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Aion-3.0-Mini, from Aion Labs, has a 131,072-token context window and is priced at $0.70/M tokens input, $1.40/M tokens output on OpenRouter.

GPT-5.6 Terra, from OpenAI, has a 1,050,000-token context window and is priced at $2/M tokens input, $12/M tokens output on OpenRouter.

Context window

• Aion-3.0-Mini: 131,072 tokens
• GPT-5.6 Terra: 1,050,000 tokens

Price

• Aion-3.0-Mini: $0.70/M tokens input, $1.40/M tokens output
• GPT-5.6 Terra: $2/M tokens input, $12/M tokens output

Provided by

• Aion-3.0-Mini: Aion Labs
• GPT-5.6 Terra: OpenAI

• Aion-3.0-Mini model details, providers and pricing
• GPT-5.6 Terra model details, providers and pricing