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What is VibeKit?

VibeKit is a versatile open-source SDK tailored for the secure execution of Codex and Claude Code agents in customizable sandbox environments. It enables developers to effortlessly integrate these coding agents into their applications or workflows with a straightforward drop-in SDK approach. By simply importing VibeKit and VibeKitConfig, users can call the generateCode function, allowing for the inclusion of prompts, modes, and streaming callbacks for efficient real-time output management. Operating within completely isolated private sandboxes, VibeKit provides customizable settings where users can install required packages, and it remains model-agnostic, making it suitable for any compatible Codex or Claude model. Additionally, it adeptly streams agent output while maintaining a comprehensive history of prompts and code, and also accommodates asynchronous execution handling. The seamless integration with GitHub supports operations such as commits, branches, and pull requests, and telemetry and tracing functionalities are available via OpenTelemetry. As of now, VibeKit is compatible with sandbox providers like E2B, and there are plans to broaden its support to platforms such as Daytona, Modal, and Fly.io, thus ensuring adaptability for any runtime that meets specific security requirements. This extensive flexibility underscores VibeKit's significance as an essential tool for developers eager to elevate their projects with sophisticated coding functionalities, paving the way for innovative solutions in software development.

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

OpenAI Codex
Claude Code
Codex CLI
Daytona
Fly.io
GitHub
Microsoft Foundry
Modal
OpenAI
OpenTelemetry
TypeScript

Integrations Supported

OpenAI Codex
Claude Code
Codex CLI
Daytona
Fly.io
GitHub
Microsoft Foundry
Modal
OpenAI
OpenTelemetry
TypeScript

API Availability

Has API

API Availability

Has API

Pricing Information

Free
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

VibeKit

Company Location

United States

Company Website

www.vibekit.sh/

Company Facts

Organization Name

OpenAI

Date Founded

2015

Company Location

United States

Company Website

openai.com

Categories and Features

Categories and Features

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