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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.

What is CoinCodex?

CoinCodex serves as an essential resource for anyone seeking detailed information about cryptocurrencies. With charts available for more than 11,450 coins, users can effortlessly access crucial metrics like current prices, historical peaks, overall market cap, and trading volumes, among various other statistics. The platform features highly customizable crypto charts, enabling real-time price tracking or selection from eight preset time frames that range from the past 24 hours to a coin's entire history. For those who need even more precise insights, a custom date range can be specified. Furthermore, CoinCodex allows users to compare the price movements of multiple cryptocurrencies on a single chart, making it a vital tool for both traders and investors. This extensive functionality ensures that users are thoroughly prepared to navigate the dynamic world of cryptocurrency investments, facilitating informed decision-making in a fast-paced market.

Media

Media

Integrations Supported

Bibox
BitMEX
BitMart
CEX.IO
Gate.io
Kraken
LATOKEN
Nash
OKX
OpenAI Codex
Paxful
Poloniex
PrimeXBT
ZB.com
Zaif
bitFlyer
coinone

Integrations Supported

Bibox
BitMEX
BitMart
CEX.IO
Gate.io
Kraken
LATOKEN
Nash
OKX
OpenAI Codex
Paxful
Poloniex
PrimeXBT
ZB.com
Zaif
bitFlyer
coinone

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

Company Facts

Organization Name

CoinCodex

Date Founded

2017

Company Location

United Kingdom

Company Website

coincodex.com

Categories and Features

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