GPT-5.6 Sol vs Aion-3.0: side-by-side summary

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

GPT-5.6 Sol, from OpenAI, has a 1,050,000-token context window and is priced at $5/M tokens input, $30/M tokens output on OpenRouter.

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.

Context window

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

Price

• GPT-5.6 Sol: $5/M tokens input, $30/M tokens output
• Aion-3.0: $3/M tokens input, $6/M tokens output

Provided by

• GPT-5.6 Sol: OpenAI
• Aion-3.0: Aion Labs

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