GPT-5.2 Chat vs GPT-5.3 Chat

GPT-5.2 Chat vs GPT-5.3 Chat: side-by-side summary

GPT-5.2 Chat and GPT-5.3 Chat are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

GPT-5.2 Chat, from OpenAI, has a 128,000-token context window and is priced at $1.75/M tokens input, $14/M tokens output on OpenRouter.

GPT-5.3 Chat, from OpenAI, has a 128,000-token context window and is priced by the provider serving it on OpenRouter.

Context window

• GPT-5.2 Chat: 128,000 tokens
• GPT-5.3 Chat: 128,000 tokens

Price

• GPT-5.2 Chat: $1.75/M tokens input, $14/M tokens output
• GPT-5.3 Chat: Pricing varies by provider

Provided by

• GPT-5.2 Chat: OpenAI
• GPT-5.3 Chat: OpenAI

• GPT-5.2 Chat model details, providers and pricing
• GPT-5.3 Chat model details, providers and pricing

GPT-5.2 Chat vs GPT-5.3 Chat at a glance