Nova Premier 1.0 vs GPT-5.1: side-by-side summary

Nova Premier 1.0 and GPT-5.1 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Nova Premier 1.0, from Amazon, has a 1,000,000-token context window and is priced at $2.50/M tokens input, $12.50/M tokens output on OpenRouter.

GPT-5.1, from OpenAI, has a 400,000-token context window and is priced at $1.25/M tokens input, $10/M tokens output on OpenRouter.

Context window

• Nova Premier 1.0: 1,000,000 tokens
• GPT-5.1: 400,000 tokens

Price

• Nova Premier 1.0: $2.50/M tokens input, $12.50/M tokens output
• GPT-5.1: $1.25/M tokens input, $10/M tokens output

Provided by

• Nova Premier 1.0: Amazon
• GPT-5.1: OpenAI

• Nova Premier 1.0 model details, providers and pricing
• GPT-5.1 model details, providers and pricing