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

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

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

Context window

• GPT-5.1-Codex: 400,000 tokens
• InternVL3 78B: Not published

Price

• GPT-5.1-Codex: $1.25/M tokens input, $10/M tokens output
• InternVL3 78B: Pricing varies by provider

Provided by

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

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