GPT-5.1 Chat vs InternVL3 78B: side-by-side summary

GPT-5.1 Chat and InternVL3 78B are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

GPT-5.1 Chat, from OpenAI, has a 128,000-token context window and is priced by the provider serving it on OpenRouter.

InternVL3 78B, from opengvlab, is priced by the provider serving it on OpenRouter.

Context window

• GPT-5.1 Chat: 128,000 tokens
• InternVL3 78B: Not published

Price

• GPT-5.1 Chat: Pricing varies by provider
• InternVL3 78B: Pricing varies by provider

Provided by

• GPT-5.1 Chat: OpenAI
• InternVL3 78B: opengvlab

• GPT-5.1 Chat model details, providers and pricing
• InternVL3 78B model details, providers and pricing