GPT-5.3 Chat vs GPT-5.2 Chat

Compare GPT-5.3 Chat from OpenAI and GPT-5.2 Chat from OpenAI on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.

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

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

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

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.

Context window: GPT-5.3 Chat: 128,000 tokens
GPT-5.2 Chat: 128,000 tokens
Price: GPT-5.3 Chat: Pricing varies by provider
GPT-5.2 Chat: $1.75/M tokens input, $14/M tokens output
Provided by: GPT-5.3 Chat: OpenAI
GPT-5.2 Chat: OpenAI

GPT-5.3 Chat vs GPT-5.2 Chat

Compare GPT-5.3 Chat from OpenAI and GPT-5.2 Chat from OpenAI on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.