OpenAI: GPT-5 Codex
Released Sep 23, 2025Try it on:
GPT-5-Codex is a specialized version of GPT-5 optimized for software engineering and coding workflows. It is designed for both interactive development sessions and long, independent execution of complex engineering tasks....
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Pricing
Per token
- Input (per 1M)
- $1.25
- Output (per 1M)
- $10.00
- Cache Read (per 1M)
- $0.125
Per unit
- Web search
- $0.010/call
Capabilities
Modality
text+image->textContext
400K tokens
Tokenizer
GPT
Knowledge cutoff
2024-09-30
Max output
128K tokens
Moderation
Moderated
Supported parameters
include_reasoning
max_tokens
reasoning
response_format
seed
structured_outputs
tool_choice
tools
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