Nex-N2.5-Pro vs GPT-6 Astra: side-by-side summary

Nex-N2.5-Pro and GPT-6 Astra 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.

GPT-6 Astra, 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

• Nex-N2.5-Pro: 262,144 tokens
• GPT-6 Astra: 1,050,000 tokens

Price

• Nex-N2.5-Pro: Pricing varies by provider
• GPT-6 Astra: $10/M tokens input, $50/M tokens output

Provided by

• Nex-N2.5-Pro: nex-agi
• GPT-6 Astra: OpenAI

• Nex-N2.5-Pro model details, providers and pricing
• GPT-6 Astra model details, providers and pricing