GPT‑5.3‑Codex‑SparkOpenAI
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Related Products
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About
CodexFuse is a modern full-stack web and e-commerce development platform engineered for direct-to-consumer (D2C) brands, digital retailers, and scaling businesses. We build custom, ultra-fast online storefronts with sub-2-second page loads, responsive mobile UI, and seamless cart-to-checkout flows optimized for paid ad traffic. Key capabilities include custom front-end architecture, secure backend workflows, payment gateway integration, database design, and conversion rate optimization (CRO). Proven across scalable retail deployments—such as luxury bedding and furniture storefronts like Modo Beds—CodexFuse delivers custom-built, maintainable digital stores that maximize customer retention, boost Google PageSpeed scores, and drive measurable revenue growth.
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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.
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Platforms Supported
Windows
Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Audience
E-commerce brands, D2C retail businesses, startup founders, performance marketers, and SMEs needing custom high-converting web storefronts.
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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
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Support
Phone Support
Supported
24/7 Live Support
Supported
Online
Supported
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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API
Offers API
Not Supported
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API
Offers API
Supported
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Screenshots and VideosNo images available
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Screenshots and Videos |
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Pricing
No information available.
Free Version
Not Supported
Free Trial
Not Supported
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Pricing
No information available.
Free Version
Not Supported
Free Trial
Not Supported
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Reviews/
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Reviews/
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Supported
In Person
Not Supported
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Company InformationCodexFuse
Founded: 2022
Pakistan
codexfuse.dev/
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Company InformationOpenAI
Founded: 2015
United States
openai.com
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Categories |
Categories |
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Integrations
Codex CLI
Not Supported
Codex Security
Not Supported
Microsoft Foundry
Not Supported
OpenAI
Not Supported
OpenAI Codex
Not Supported
OpenClaw
Not Supported
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Integrations
Codex CLI
Supported
Codex Security
Supported
Microsoft Foundry
Supported
OpenAI
Supported
OpenAI Codex
Supported
OpenClaw
Supported
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