Kimi K3 vs GPT-6 Astra Pro: side-by-side summary

Kimi K3 and GPT-6 Astra Pro are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Kimi K3, from moonshotai, has a 1,048,576-token context window and is priced at $2.50/M tokens input, $14/M tokens output on OpenRouter.

GPT-6 Astra Pro, from OpenAI, has a 1,050,000-token context window and is priced at $10/M tokens input, $50/M tokens output on OpenRouter.

Context window

• Kimi K3: 1,048,576 tokens
• GPT-6 Astra Pro: 1,050,000 tokens

Price

• Kimi K3: $2.50/M tokens input, $14/M tokens output
• GPT-6 Astra Pro: $10/M tokens input, $50/M tokens output

Provided by

• Kimi K3: moonshotai
• GPT-6 Astra Pro: OpenAI

• Kimi K3 model details, providers and pricing
• GPT-6 Astra Pro model details, providers and pricing