Skip to content

Muse Spark Open now available on AI Gateway

,

Muse Spark Open from Meta is now available on AI Gateway. The open-weight reasoning model is designed for coding and agentic workflows, including multi-file refactoring, debugging, and understanding large codebases.

Muse Spark Open supports text and image input with a 1M-token context window, allowing agents to work with code and screenshots in the same request. It is available with ZDR and no training, without creating separate provider accounts.

Use meta/muse-spark-open as the model name across all API formats and coding agents. The model is available across the AI SDK, the OpenAI-compatible Chat Completions and Responses APIs, the Anthropic-compatible Messages API, and coding agents connected to AI Gateway. 

import { streamText } from 'ai';


const result = streamText({
  model: 'meta/muse-spark-open',
  prompt: 'Outline three steps for safely refactoring an authentication module.',
});


for await (const text of result.textStream) {
  process.stdout.write(text);
}
View model details

To use it in Claude Code, Codex, Cursor, and more, install the latest Vercel CLI and run setup:

# Upgrade to the latest version of the Vercel CLI
pnpm i -g vercel@latest


# Run coding agents setup command
vercel ai-gateway coding-agents setup

Then select meta/muse-spark-open in the agent. See the coding agents guide for details.

Try Muse Spark Open in the model playground.

AI Gateway provides a unified API for calling models, tracking usage and cost, and configuring retries, failover, and performance optimizations for higher-than-provider uptime. It includes built-in custom reporting, Zero Data Retention support, budgets for API keys, routing rules, and more.

AI Gateway reflects provider pricing with no markup and does not charge a platform fee on inference, including on Bring Your Own Key (BYOK) requests.

You can view all language models available on AI Gateway.