GPT-5 CodexArchive and alternatives
GPT-5 Codex is no longer available on OpenRouter. Explore a current alternative below.
Released September 23, 2025
Specifications
GPT-5 Codex at a glance
Context
400K tokens
Max output
128K tokens
Input
Text, Image
Output
Text
Input price
$1.25 / 1M
Output price
$10.00 / 1M
Knowledge cutoff
2024-09-30
Capabilities
What it is good at
Catalog capabilities
- Accepts image input
- Generates text responses
- Supports tool calling
- Supports structured outputs
Good for
Benchmarks
Catalog data, not Krater benchmarks.
Design Arena webapps rank
#27
Design Arena mobileapps rank
#28
Compare
Compare GPT-5 Codex
GPT-5 Codex vs GPT-4 Turbo
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 comparisonGPT-5 Codex 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 comparisonGPT-5 Codex 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 GPT-5 Codex
Clear answers based on the model catalog and Krater access.