GPT-5.1 Chat vs GTE-Base: side-by-side summary

GPT-5.1 Chat and GTE-Base 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.

GTE-Base, from thenlper, has a 512-token context window and is priced at $0.005/M tokens on OpenRouter.

Context window

• GPT-5.1 Chat: 128,000 tokens
• GTE-Base: 512 tokens

Price

• GPT-5.1 Chat: Pricing varies by provider
• GTE-Base: $0.005/M tokens

Provided by

• GPT-5.1 Chat: OpenAI
• GTE-Base: thenlper

• GPT-5.1 Chat model details, providers and pricing
• GTE-Base model details, providers and pricing