ERNIE 4.5 21B A3B vs GPT-5 Chat

ERNIE 4.5 21B A3B vs GPT-5 Chat: side-by-side summary

ERNIE 4.5 21B A3B and GPT-5 Chat are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

ERNIE 4.5 21B A3B, from baidu, has a 131,072-token context window and is priced by the provider serving it on OpenRouter.

GPT-5 Chat, from OpenAI, has a 128,000-token context window and is priced by the provider serving it on OpenRouter.

Context window

• ERNIE 4.5 21B A3B: 131,072 tokens
• GPT-5 Chat: 128,000 tokens

Price

• ERNIE 4.5 21B A3B: Pricing varies by provider
• GPT-5 Chat: Pricing varies by provider

Provided by

• ERNIE 4.5 21B A3B: baidu
• GPT-5 Chat: OpenAI

• ERNIE 4.5 21B A3B model details, providers and pricing
• GPT-5 Chat model details, providers and pricing

ERNIE 4.5 21B A3B vs GPT-5 Chat at a glance