Nex-N2.5-Pro vs Grok 4.5: side-by-side summary

Nex-N2.5-Pro and Grok 4.5 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Nex-N2.5-Pro, from nex-agi, has a 262,144-token context window and is priced by the provider serving it on OpenRouter.

Grok 4.5, from SpaceXAI, has a 500,000-token context window and is priced at $2/M tokens input, $6/M tokens output on OpenRouter.

Context window

• Nex-N2.5-Pro: 262,144 tokens
• Grok 4.5: 500,000 tokens

Price

• Nex-N2.5-Pro: Pricing varies by provider
• Grok 4.5: $2/M tokens input, $6/M tokens output

Provided by

• Nex-N2.5-Pro: nex-agi
• Grok 4.5: SpaceXAI

• Nex-N2.5-Pro model details, providers and pricing
• Grok 4.5 model details, providers and pricing