GPT-5.2 Pro vs INTELLECT-3: side-by-side summary

GPT-5.2 Pro and INTELLECT-3 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

GPT-5.2 Pro, from OpenAI, has a 400,000-token context window and is priced at $21/M tokens input, $168/M tokens output on OpenRouter.

INTELLECT-3, from prime-intellect, has a 131,072-token context window and is priced by the provider serving it on OpenRouter.

Context window

• GPT-5.2 Pro: 400,000 tokens
• INTELLECT-3: 131,072 tokens

Price

• GPT-5.2 Pro: $21/M tokens input, $168/M tokens output
• INTELLECT-3: Pricing varies by provider

Provided by

• GPT-5.2 Pro: OpenAI
• INTELLECT-3: prime-intellect

• GPT-5.2 Pro model details, providers and pricing
• INTELLECT-3 model details, providers and pricing