Retired model
ChatGPT-4oArchive and alternatives
ChatGPT-4o is no longer available on OpenRouter. Explore a current alternative below.
Specifications
ChatGPT-4o at a glance
Context
128K tokens
Max output
16.4K tokens
Input price
$5.00 / 1M
Output price
$15.00 / 1M
Capabilities
What it is good at
Good for
Long documents
Compare
Compare ChatGPT-4o
ChatGPT-4o vs InternVL3 78B
The InternVL3 series is an advanced multimodal large language model (MLLM).
Open comparisonChatGPT-4o vs GPT-4 Turbo (batch)
The latest GPT-4 Turbo model with vision capabilities. Vision requests can now use JSON mode and function calling. Training data: up to December 2023.
Open comparisonChatGPT-4o vs GPT-5.1-Codex
GPT-5.1-Codex is a specialized version of GPT-5.1 optimized for software engineering and coding workflows.
Open comparisonFAQ
Questions about ChatGPT-4o
Clear answers based on the model catalog and Krater access.
ChatGPT-4o supports a context window of 128,000 tokens.