Ratings and Reviews 0 Ratings

Total
ease
features
design
support

This software has no reviews. Be the first to write a review.

Write a Review

Ratings and Reviews 0 Ratings

Total
ease
features
design
support

This software has no reviews. Be the first to write a review.

Write a Review

Alternatives to Consider

  • JetBrains Junie Reviews & Ratings
    12 Ratings
    Company Website
  • Google AI Studio Reviews & Ratings
    11 Ratings
    Company Website
  • Windsurf Editor Reviews & Ratings
    159 Ratings
    Company Website
  • Retool Reviews & Ratings
    566 Ratings
    Company Website
  • Vertex AI Reviews & Ratings
    827 Ratings
    Company Website
  • LM-Kit.NET Reviews & Ratings
    23 Ratings
    Company Website
  • Atera IT Autopilot Reviews & Ratings
    1,792 Ratings
    Company Website
  • Spidergap Reviews & Ratings
    117 Ratings
    Company Website
  • Podium Reviews & Ratings
    2,094 Ratings
  • StackAI Reviews & Ratings
    49 Ratings
    Company Website

What is GPT‑5-Codex?

GPT-5-Codex is a refined version of GPT-5 designed specifically for agentic coding within Codex, which focuses on practical software engineering tasks such as building complete projects from scratch, adding features and tests, debugging issues, executing large-scale refactoring, and conducting code reviews. This latest iteration of Codex boasts improved speed and reliability, offering enhanced real-time performance across a variety of development environments, such as terminal/CLI, IDE extensions, web platforms, GitHub, and mobile applications. For tasks related to cloud computing and code evaluations, GPT-5-Codex serves as the default model; nonetheless, developers can also leverage it locally via Codex CLI or IDE extensions if they prefer. The model intelligently adjusts the “reasoning time” it allocates based on task complexity, delivering prompt responses for simpler, well-defined tasks while investing more effort into complex challenges like refactors and significant feature implementations. Furthermore, the upgraded code review functionalities assist in spotting critical bugs before they reach deployment, significantly enhancing the reliability of the software development process. As a result of these innovations, developers can anticipate a more streamlined workflow, which ultimately translates to superior software quality and outcomes that meet rigorous standards. This evolution in coding assistance reflects a growing trend toward smart tools that amplify developer productivity and foster creativity.

What is GPT‑5.3‑Codex‑Spark?

GPT-5.3-Codex-Spark is a specialized, ultra-fast coding model designed to enable real-time collaboration within the Codex platform. As a streamlined variant of GPT-5.3-Codex, it prioritizes latency-sensitive workflows where immediate responsiveness is critical. When deployed on Cerebras’ Wafer Scale Engine 3 hardware, Codex-Spark delivers more than 1000 tokens per second, dramatically accelerating interactive development sessions. The model supports a 128k context window, allowing developers to maintain broad project awareness while iterating quickly. It is optimized for making minimal, precise edits and refining logic or interfaces without automatically executing additional steps unless instructed. OpenAI implemented extensive infrastructure upgrades—including persistent WebSocket connections and inference stack rewrites—to reduce time-to-first-token by 50% and cut client-server overhead by up to 80%. On software engineering benchmarks such as SWE-Bench Pro and Terminal-Bench 2.0, Codex-Spark demonstrates strong capability while completing tasks in a fraction of the time required by larger models. During the research preview, usage is governed by separate rate limits and may be queued during peak demand. Codex-Spark is available to ChatGPT Pro users through the Codex app, CLI, and VS Code extension, with API access for select design partners. The model incorporates the same safety and preparedness evaluations as OpenAI’s mainline systems. This release signals a shift toward dual-mode coding systems that combine rapid interactive loops with delegated long-running tasks. By tightening the iteration cycle between idea and execution, GPT-5.3-Codex-Spark expands what developers can build in real time.

Media

Media

Integrations Supported

Codex CLI
Microsoft Foundry
OpenAI Codex
ChatGPT
F#
Go
HTML
JavaScript
JetBrains Junie
Julia
Kotlin
Laravel
OpenAI
PHP
Python
Ruby
SQL
Scala
Verdent
Visual Basic

Integrations Supported

Codex CLI
Microsoft Foundry
OpenAI Codex
ChatGPT
F#
Go
HTML
JavaScript
JetBrains Junie
Julia
Kotlin
Laravel
OpenAI
PHP
Python
Ruby
SQL
Scala
Verdent
Visual Basic

API Availability

Has API

API Availability

Has API

Pricing Information

Pricing not provided.
Free Trial Offered?
Free Version

Pricing Information

Pricing not provided.
Free Trial Offered?
Free Version

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

OpenAI

Date Founded

2015

Company Location

United States

Company Website

openai.com/index/introducing-upgrades-to-codex/

Company Facts

Organization Name

OpenAI

Date Founded

2015

Company Location

United States

Company Website

openai.com

Categories and Features

Categories and Features

Popular Alternatives

Popular Alternatives

Claude Opus 4.5 Reviews & Ratings

Claude Opus 4.5

Anthropic
Claude Opus 4.6 Reviews & Ratings

Claude Opus 4.6

Anthropic