GPT-5.6 Luna vs Hy3: side-by-side summary

GPT-5.6 Luna and Hy3 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

GPT-5.6 Luna, from OpenAI, has a 1,050,000-token context window and is priced at $0.20/M tokens input, $1.20/M tokens output on OpenRouter.

Hy3, from tencent, has a 262,144-token context window and is priced at $0.126/M tokens input, $0.522/M tokens output on OpenRouter.

Context window

• GPT-5.6 Luna: 1,050,000 tokens
• Hy3: 262,144 tokens

Price

• GPT-5.6 Luna: $0.20/M tokens input, $1.20/M tokens output
• Hy3: $0.126/M tokens input, $0.522/M tokens output

Provided by

• GPT-5.6 Luna: OpenAI
• Hy3: tencent

• GPT-5.6 Luna model details, providers and pricing
• Hy3 model details, providers and pricing