+
+

Related Products

  • Google AI Studio
    12 Ratings
    Visit Website
  • Gemini Enterprise Agent Platform
    961 Ratings
    Visit Website
  • JetBrains Junie
    12 Ratings
    Visit Website
  • Windsurf Editor
    168 Ratings
    Visit Website
  • Retool
    570 Ratings
    Visit Website
  • SenseIP
    1 Rating
    Visit Website
  • LM-Kit.NET
    28 Ratings
    Visit Website
  • Google Cloud Platform
    60,933 Ratings
    Visit Website
  • CEX.IO
    29 Ratings
    Visit Website
  • Viktor
    17 Ratings
    Visit Website

About

GPT-5.3-Codex-Spark is an ultra-fast coding model designed for real-time collaboration inside Codex. Built as a smaller version of GPT-5.3-Codex, it delivers over 1000 tokens per second when served on low-latency Cerebras hardware. The model is optimized for interactive coding tasks, enabling developers to make targeted edits and see results almost instantly. With a 128k context window, Codex-Spark supports substantial project context while maintaining speed. It focuses on lightweight, precise edits and does not automatically run tests unless prompted. Infrastructure upgrades such as persistent WebSocket connections significantly reduce latency across the full request-response pipeline. Released as a research preview for ChatGPT Pro users, Codex-Spark marks the first milestone in OpenAI’s partnership with Cerebras.

About

Reactor is building the missing layer for world models and invites users to experience real-time world models through an early preview. Its product direction centers on worlds generated in real time, where pixels, sounds, and actions can be produced on the fly, changing how people interact with software and, eventually, the physical world. The preview is the first step toward that reality, letting users experience AI-generated worlds running on global low-latency infrastructure. Reactor’s work is focused on the next frontier of AI, real-time world models that people, agents, and robots can drive frame by frame. Rather than treating generated video as something passive to watch, Reactor points toward interactive environments that can be inhabited, controlled, and shaped as they generate. Its research and product focus includes real-time interactivity, inference, controllable world models, and systems that make dynamic visual environments responsive enough for live experiences.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Software developers, engineering teams, and AI-powered coding tool builders seeking ultra-low-latency, real-time code generation and iterative collaboration within the Codex ecosystem

Audience

AI creators, game developers, simulation teams, and robotics researchers who want to build or explore real-time interactive worlds generated by AI

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

No information available.
Free Version
Free Trial

Pricing

Free
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

OpenAI
Founded: 2015
United States
openai.com

Company Information

Reactor
Founded: 2021
United States
www.reactor.inc/

Alternatives

Claude Opus 4.5

Claude Opus 4.5

Anthropic

Alternatives

MixIT

MixIT

Tridiagonal Solutions
Claude Opus 4.6

Claude Opus 4.6

Anthropic
FusionReactor

FusionReactor

Intergral
SuperPro Designer

SuperPro Designer

Intelligen
GWM-1

GWM-1

Runway AI

Categories

Categories

Integrations

Codex CLI
Codex Security
Microsoft Foundry
OpenAI
OpenAI Codex
OpenClaw

Integrations

Codex CLI
Codex Security
Microsoft Foundry
OpenAI
OpenAI Codex
OpenClaw
Claim GPT‑5.3‑Codex‑Spark and update features and information
Claim GPT‑5.3‑Codex‑Spark and update features and information
Claim Reactor and update features and information
Claim Reactor and update features and information