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Description
GPT-5.3-Codex-Spark is OpenAI’s first model purpose-built for real-time coding within the Codex ecosystem. Engineered for ultra-low latency, it can generate more than 1000 tokens per second when running on Cerebras’ Wafer Scale Engine hardware. Unlike larger frontier models designed for long-running autonomous tasks, Codex-Spark specializes in rapid iteration, targeted edits, and immediate feedback loops. Developers can interrupt, redirect, and refine outputs interactively, making it ideal for collaborative coding sessions. The model features a 128k context window and is currently text-only during its research preview phase. End-to-end latency improvements—including WebSocket streaming and inference stack optimizations—reduce time-to-first-token by 50% and overall roundtrip overhead by up to 80%. Codex-Spark performs strongly on benchmarks such as SWE-Bench Pro and Terminal-Bench 2.0 while completing tasks significantly faster than its larger counterpart. It is available to ChatGPT Pro users in the Codex app, CLI, and VS Code extension with separate rate limits during preview. The model maintains OpenAI’s standard safety training and evaluation protocols. Codex-Spark represents the beginning of a dual-mode Codex future that blends real-time interaction with long-horizon reasoning capabilities.
Description
Grok 4.20 is a next-generation AI model created by xAI to advance the boundaries of machine reasoning and language comprehension. Powered by the Colossus supercomputer, it delivers high-performance processing for complex workloads. The model supports multimodal inputs, enabling it to analyze and respond to both text and images. Future updates are expected to expand these capabilities to include video understanding. Grok 4.20 demonstrates exceptional accuracy in scientific analysis, technical problem-solving, and nuanced language tasks. Its advanced architecture allows for deeper contextual reasoning and more refined response generation. Improved moderation systems help ensure responsible, balanced, and trustworthy outputs. This version significantly improves consistency and interpretability over prior iterations. Grok 4.20 positions itself among the most capable AI models available today. It is designed to think, reason, and communicate more naturally.
API Access
Has API
API Access
Has API
Screenshots View All
No images available
Integrations
Microsoft Foundry
OpenClaw
C
C#
C++
CSS
Codex CLI
Doraverse
FastRouter
Go
Integrations
Microsoft Foundry
OpenClaw
C
C#
C++
CSS
Codex CLI
Doraverse
FastRouter
Go
Pricing Details
No price information available.
Free Trial
Free Version
Pricing Details
No price information available.
Free Trial
Free Version
Deployment
Web-Based
On-Premises
iPhone App
iPad App
Android App
Windows
Mac
Linux
Chromebook
Deployment
Web-Based
On-Premises
iPhone App
iPad App
Android App
Windows
Mac
Linux
Chromebook
Customer Support
Business Hours
Live Rep (24/7)
Online Support
Customer Support
Business Hours
Live Rep (24/7)
Online Support
Types of Training
Training Docs
Webinars
Live Training (Online)
In Person
Types of Training
Training Docs
Webinars
Live Training (Online)
In Person
Vendor Details
Company Name
OpenAI
Founded
2015
Country
United States
Website
openai.com
Vendor Details
Company Name
xAI
Founded
2023
Country
United States
Website
grok.com