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What is Meta Model API?

The Meta Model API serves as a groundbreaking developer interface that leverages Muse Spark 1.1, Meta's cutting-edge multimodal reasoning model specifically designed for agentic applications such as programming, tool use, and extensive computer interactions. Currently in its public preview phase, this API allows developers to easily integrate Muse Spark 1.1 through an OpenAI-compatible package, ensuring a smooth transition for current clients while preserving the existing code structure and facilitating straightforward adjustments to the muse-spark-1.1 model. This model is particularly adept at performing personal agentic tasks, enabling effective planning and coordination across a range of external applications and services, in addition to its ability to adapt to new native tools, MCP servers, and customized skills. When functioning as a primary agent, it can gather contextual information, formulate plans, and supervise actions across multiple subordinate agents; however, as a subagent, it focuses on its specified responsibilities, understands the tools at its disposal, and knows when to escalate concerns. Furthermore, the model boasts the capacity to handle a context window of 1 million tokens, which empowers it to remember previous actions, retrieve information from much earlier tasks, and condense context for enhanced efficiency. As a result of these features, the Meta Model API signifies a major leap forward in the creation of intelligent and responsive software applications, paving the way for future innovations in technology. This advancement not only benefits developers but also enhances the user experience by enabling more sophisticated interactions with digital tools.

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

Codex CLI
OpenAI
OpenAI Codex
OpenClaw
Claude Code
Continue
GitHub
Hermes Agent
Hugging Face
LangChain
Llama 3
Llama 4 Behemoth
Llama 4 Maverick
Llama 4 Scout
LlamaIndex
Meta AI
Microsoft Foundry
Muse Spark 1.1
OpenAI Agents SDK
Vercel AI SDK

Integrations Supported

Codex CLI
OpenAI
OpenAI Codex
OpenClaw
Claude Code
Continue
GitHub
Hermes Agent
Hugging Face
LangChain
Llama 3
Llama 4 Behemoth
Llama 4 Maverick
Llama 4 Scout
LlamaIndex
Meta AI
Microsoft Foundry
Muse Spark 1.1
OpenAI Agents SDK
Vercel AI SDK

API Availability

Has API

API Availability

Has API

Pricing Information

$1.25 per 1M tokens
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

Meta

Company Location

United States

Company Website

developer.meta.com/ai/products/meta-model-api/

Company Facts

Organization Name

OpenAI

Date Founded

2015

Company Location

United States

Company Website

openai.com

Categories and Features

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