OpenAI: Gpt 5 codex

openai/gpt-5-codex

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. The model supports building projects from scratch, feature development, debugging, large-scale refactoring, and code review. Compared to GPT-5, Codex is more steerable, adheres closely to developer instructions, and produces cleaner, higher-quality code outputs. Reasoning effort can be adjusted with the reasoning.effort parameter Codex integrates into developer environments including the CLI, IDE extensions, GitHub, and cloud tasks. It adapts reasoning effort dynamically—providing fast responses for small tasks while sustaining extended multi-hour runs for large projects. The model is trained to perform structured code reviews, catching critical flaws by reasoning over dependencies and validating behavior against tests. It also supports multimodal inputs such as images or screenshots for UI development and integrates tool use for search, dependency installation, and environment setup. Codex is intended specifically for agentic coding applications.

Model specifications

Input
text
Output
text
Context
400,000 tokens
Max output
128,000 tokens
Input price
.25 / 1M tokens
Output price
0 / 1M tokens
Released
2026-02-11

Capabilities

  • Streaming
  • Function calling
  • Playground

Provider pricing, discounts and data privacy

Compare effective provider prices, published discounts, regions, retention policies, training use, compliance, and privacy links by service tier.

Standard service tier

2 available providers · tier input average .25 / 1M tokens · tier output average 0 / 1M tokens

Azure

Tier: Standard · Region: US

Pricing
Input
.25 / 1M tokens
Output
0 / 1M tokens

No provider discount is currently published.

Data privacy and compliance
Region
US
Zero data retention
Yes
Data retention
Zero retention
Used for training
No
Data collection
Moderated
Yes
GDPR compliant
Yes
HIPAA compliant
Yes
SOC 2 certified
Yes
BYOK supported
No

Privacy policy · Terms · Official website · Documentation · Status

OpenAI

Tier: Standard · Region: US

Pricing
Input
.25 / 1M tokens
Output
0 / 1M tokens

No provider discount is currently published.

Data privacy and compliance
Region
US
Zero data retention
Yes
Data retention
Zero retention
Used for training
No
Data collection
Moderated
Yes
GDPR compliant
Yes
HIPAA compliant
Yes
SOC 2 certified
Yes
BYOK supported
Yes

Privacy policy · Terms · Official website · Documentation · Status

Frequently asked questions

What is OpenAI: Gpt 5 codex?
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. The model supports building projects from scratch, feature development, debugging, large-scale refactoring, and code review. Compared to GPT-5, Codex is more steerable, adheres closely to developer instructions, and produces cleaner, higher-quality code outputs. Reasoning effort can be adjusted with the reasoning.effort parameter Codex integrates into developer environments including the CLI, IDE extensions, GitHub, and cloud tasks. It adapts reasoning effort dynamically—providing fast responses for small tasks while sustaining extended multi-hour runs for large projects. The model is trained to perform structured code reviews, catching critical flaws by reasoning over dependencies and validating behavior against tests. It also supports multimodal inputs such as images or screenshots for UI development and integrates tool use for search, dependency installation, and environment setup. Codex is intended specifically for agentic coding applications.
How much does OpenAI: Gpt 5 codex cost?
Input costs start at .25 / 1M tokens and output costs start at 0 / 1M tokens. Provider-level prices vary by service tier.
What is the context length of OpenAI: Gpt 5 codex?
OpenAI: Gpt 5 codex supports a 400,000 token context window and up to 128,000 output tokens.
What capabilities does OpenAI: Gpt 5 codex support?
OpenAI: Gpt 5 codex supports Streaming, Function calling, Playground.
Which providers offer OpenAI: Gpt 5 codex?
OpenAI: Gpt 5 codex is available from Azure, OpenAI.
How do providers handle data privacy for OpenAI: Gpt 5 codex?
2 of 2 providers report that customer data is not used for training, and 2 offer zero-data-retention routing. Retention, compliance, and privacy-policy links are listed per provider.

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